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Mpg on your car ? (92 posts / 7,609 views)
chopper chopper
Posts: 4,767
Post #1 31 May 2021 15:18
0
I've got a 1.6 tdi seat ibiza sport. I've recently had the egr valve and cooler changed. Don't no if that makes a difference. But I've just started doing a few miles for work about 50 miles a day. I'm currently getting up to 72 mpg or so the computer says. I'm getting around nearly 500 miles on a tank if I keep my speed down. Does anyone else drive a diesel and do a few miles for work and fishing. I done 370 miles last week and used just over half a tank.
heathrow heathrow
Posts: 8,292
Post #2 1 Jun 2021 08:55
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In reply to Post #1
How much fuel does it take to fill it ??? The mpg on the dash /trip computer can be wrong
chopper chopper
Posts: 4,767
Post #3 1 Jun 2021 12:25
0
In reply to Post #2
£55 to fill up when fuel lights come on
framey framey
Posts: 5,319
Post #4 1 Jun 2021 13:12
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In reply to Post #3
I think he means litres rather than cash terms as different companies charge different.
mal mal
Posts: 8,986
Post #5 1 Jun 2021 14:43
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In reply to Post #1
That sounds like about a 40-45 litre tank. Bit of basic maths based on price per litre round here.

If you're getting that many miles out of it then fair play to you.

I noticed that keeping my revs below 3000 makes a big difference to consumption. Less aggressive braking and acceleration too. Basically being a better driver I suppose 😁

I'm looking at a Toyota ch-r hybrid for my next car. Would be interested to hear any knowledge on them. ..
AndyCarper82 AndyCarper82
Posts: 2,541
Post #6 1 Jun 2021 17:46
0
In reply to Post #1
https://www.honestjohn.co.uk/realmpg/seat/ibiza-2008

I assume this is your model of Ibiza? Real worl MPG figs are there for you to see from actual owners and is a good guide of what to actually expect.

You can also check out all the other cars as well. Published figures are pretty much complete bull as you can see.

Some other decent real world MPG diesels.
https://www.honestjohn.co.uk/topten/top-10-most-economical-diesel-real-mpg-cars/

And just to emphasize what bull manufacturers can claim..
https://www.honestjohn.co.uk/topten/top-10-cars-that-fall-shortest-of-their-claimed-mpg/

sundance sundance
Posts: 6,762
Post #7 3 Jun 2021 21:50
1
In reply to Post #5
Driving like that makes a.massive difference you are right Mal.
I teach people.to.drive. If somone is often going from accelerator to brake they aren't looking and planning ahead.
Golden-Paws Golden-Paws
Posts: 251
Post #8 5 Jun 2021 08:48
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In reply to Post #1
I'm always a bit dubious letting the computer work it out. I'm not sure how it calculates the figures but if it's checking the tank level and it's not accurate, it could be miles out. Best bet is top right up, reset the trip counter and then note the results when you top up again. Divide the litres by 4.54 to convert to gallons.

I've just bought a newish Nissan Quasqai (1.5 L diesel - don't get the petrol version) and it supposed to be good for about 60 mpg on a decent run. Compared to my old 2 L petrol car which probably topped 30 mpg, the power is low down and it's a superb drive.
Bristolsaint40 Bristolsaint40
Posts: 243
Post #9 10 May 2022 19:34
0
In reply to Post #1
Last car was 22mpg if I behaved myself, 17mpg if i was heavy footed, so glad I sold it last October and have gone electric.

Tinhead Tinhead
Posts: 17,089
Post #10 10 May 2022 21:56
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The missus has a 1.2 fiat 500 and I'm sure the on board computer is giving a reading less mpg than what it's doing.
When you put it in instantaneous mode the reading fluctuates wildly even when you do a steady speed over long distances. I don't trust it.
Only way to know for sure is to fill to the brim, do some miles, fill up again and do the maths
wandle1 wandle1
Posts: 7,469
Post #12 12 May 2022 13:18
0
For many yrs I had a volvo 940 se,redblock a lovely old estate ,very thirsty car..then I discovered smooth driving practises ,never over revving the engine ,and acceleration steadily ..then I got into hyper miles,or mile'ing, I use the roads ,inclines and gradients to my advantage..

I also make sure my tyres are all equal pressure and not soft..,I save a lot of money doing that...

Best tip I learnt ,was to not rev past past 2.5 rpm keep the gear changes ultra smooth..I can do this where I live, but it may be different to other busy areas..

It's a real skill,is hypering or coasteering,not the jumping off cliffs ,coasteering lol..

It works..
ip100 ip100
Posts: 12,494
Post #13 12 May 2022 14:58
1
In reply to Post #12
That's great until your engine begins to coke up. Driving too conservatively causes problems
jeffire jeffire
Posts: 4,442
Post #14 12 May 2022 15:24
1
In reply to Post #13
Yep need a frequent blast
wandle1 wandle1
Posts: 7,469
Post #15 12 May 2022 16:06
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In reply to Post #13
Good point,was great til it blew up..only had 256,000 on the odo,then I got a T5..,that was a bit faster..lol..
sundance sundance
Posts: 6,762
Post #16 12 May 2022 17:22
1
In reply to Post #12
It does work. I'm a driving instructor so poodle around town a lot. The occasional short 50mph dual. But mostly town traffic.

We teach economy when driving. As we are training to look ahead and plan and react early, also to be defensive on position and speed when you can't see. That makes economical driving but there's room for more.

See a brake light. Come off the accelerator.
Junction coming. Come off the accelerator
Narrow gap,.oncoming traffic. Come off the accelerator
At the top of a hill. Come off the accelerator.

You can always go back on it.

If you are regular going from accelerator to brake you aren't
Observing and planning well enough.

When I go for a beer I often get the bus. Jesus, those guys gun it up fast and slam on the brakes constantly.

Regular drivers approach their junctions, especially corners, way too fast. Last second they slow way down. Who are they trying to kid? What a waste of fuel.

I.like to think of it as if you were on a push bike would you be peddling hard or coasting? If it's coasting you shouldn't be on the accelerator.
wandle1 wandle1
Posts: 7,469
Post #17 12 May 2022 17:29
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In reply to Post #16
That's exactly what I do ,to a T..

Anticipation is key ,I drove home tonight ,10 miles,I don't think I took my Honda over 2.5 rpm,I watch the rpm dia,as much as I do the the speedo,,it really does save money..

On the roads I see all this aggressive driving on country lanes,not only holiday makes ,but locals as well,i bet they have deep pockets to pay for wasted fuel..

Basically round here,it's 20 mins,equals 10 miles,if your doing faster,your going dangerously

Can't wait for the 20 mph to come in where I live..should be interesting...
ip100 ip100
Posts: 12,494
Post #18 12 May 2022 19:04
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In reply to Post #16
I didn't say it didnt work,I said it wasnt good for the overall life and condition of the engine. Being an ex mechanic qualified to nvq level 4 I do know a little about them......
sundance sundance
Posts: 6,762
Post #19 12 May 2022 19:08
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In reply to Post #18
I didn't reply to you mate. I was agreeing with the other chap.
But whilst I'm sure your experience counts.
I'm 54 and have never knackered a car by driving
Economically. My teaching car is a 12 plate Fiesta
ip100 ip100
Posts: 12,494
Post #20 13 May 2022 11:51
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In reply to Post #19
Youve been lucky. It 100,% causes issues when engines aren't run in the way they were designed.
Goose Goose
Posts: 12,901
Post #21 15 May 2022 23:51
1
In reply to Post #20
Gentle does it till its properly warmed up, then rag it bouncing it off the limiter in every gear.
jhhilton1983 jhhilton1983
Posts: 1,945
Post #22 16 May 2022 02:05
0
In reply to Post #1
Current Motor - average 42mpg.

Previous motors have been around 10mpg dependant on driving style & what map i used in the ecu. Would love to have the car back but would be scared at the petrol pump when filling it


I see the logic in driving economically but genuinely think it can increase the dangers on roads in some instances. Plus have to agree it does nothing good to a engine if you drive like that all the time, especially using supermarket fuel. Cant imagine what the ECG valves look like on a turbo's car driving economically with supermarket fuel

Goose Goose
Posts: 12,901
Post #23 16 May 2022 09:41
1
In reply to Post #22
Nothing wrong with supermarket fuel.
ip100 ip100
Posts: 12,494
Post #24 16 May 2022 10:11
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In reply to Post #23
It's lower quality, and it also can cause issues with long term use. Diesel moreso than petrol .
Goose Goose
Posts: 12,901
Post #25 16 May 2022 11:46
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In reply to Post #24
All fuel is heavily regulated and has to meet British standards, does anyone have analytical evidence to prove that supermarket fuel is of a lower quality and can cause issues or is it just marketing hearsay to justify the higher prices elsewhere. Having run my bike on premium fuel and had it on a dyno and exhaust gas analyser then repeated it after a month on supermarket fuel and seeing exactly the same results I don't believe there is any difference. In fact I'm told supermarket tankers are often filling up from the refinery as the major players.
ip100 ip100
Posts: 12,494
Post #26 16 May 2022 12:31
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In reply to Post #25
Yes it has to meet standards, but supermarket fuel just meets them whereas the larger fuel companies exceeds them. It to do with the additives withing the fuel. I speak from experience,nothing to do with any marketing nonsense. Back when I was in the trade the amount of people who's lack of power issues were rectified by simply ditching supermarket fuel and using one of the major players fuel was quite something, and I'm told by people still within the trade it's still the case today. I have a diesel car and the couple of times I've out supermarket fuel in the difference has been noticeable. It makes a difference,100%
Old-Cornishman
Posts: 688
Post #27 16 May 2022 14:59
0
In reply to Post #25
Tankers definitely can fill from the same terminal be it for supermarket or other but might have a different additive pack.
Octane level can definitely affect power and smoothness depending on the engine design but for a normal family saloon it's highly unlikely to be noticeable. Not sure how it would affect your bike but I've a high performance normally aspirated engine in my car (100 + bhp / ltr ) that swings the ignition timing to compensate for a lower octane fuel and that does run marginally better / has more power with a higher octane fuel. If you use petrol with a like for like octane from the different filling stations then I don't see how you would notice any performance difference, which your dyno seems to confirm.
What could be debatable is the long term effect IF the additive pack is not as good. Diesel might be more prone to long term detrimental effects but I've been using mainly supermarket petrol due to supply convenience in my high performance engine for 20 years with no noticeable problems.
Ethanol content is different ball game though.
Goose Goose
Posts: 12,901
Post #28 16 May 2022 16:47
0
In reply to Post #27
I've never kept a bike long enough to se any detrimental effect. My diesel car gets filled up when the low level warning comes on, normally at the sext filling station regardless of what station it is but I've never notice any performance difference from one place to the next.
KenTownley KenTownley
Posts: 30,593
Post #29 18 May 2022 11:31
0
In reply to Post #28
Same as....

My diesel is getting on for 20 years old. Still averages 50mpg+ on a run and 40 in town and country running.
sundance sundance
Posts: 6,762
Post #30 18 May 2022 14:38
0
In reply to Post #28
The only time I've ever noticed a difference in fuel was about 10 years back we had a batch of pad petrol around this area.

I could drive it as I think experience of lots of vehicles makes you automatically compensate. But my pupils really struggled.

It was in all the papers a day or two later. I just thought the first girl was having an off day.
Bristolsaint40 Bristolsaint40
Posts: 243
Post #31 19 May 2022 21:39
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In reply to Post #30
I've gone electric now so doesn't matter, and before anyone starts talking about electric prices, it still only cost me £10 to fill it up with a range of 285 miles lol.
sundance sundance
Posts: 6,762
Post #32 20 May 2022 19:03
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In reply to Post #31
I'm a Driving Instructor and my next car will be an electric
I've done a few lessons in their own electric cars and they are great

I work local and part time anyway so range isn't an issue plus I already teach auto.
wandle1 wandle1
Posts: 7,469
Post #33 20 May 2022 19:12
0
It seems to me that ,the powers that be want people out of their cars ..some might say the green issues are being bandied about to achieve this..we all know how much lies and half truths the greens and government throw out into the media..

At the moment electric cars are new,but I bet ,that in the not too distant future ,these vehicles, and when enough of them have been forced upon people,they will get so expensive to run or use ,that it could possibly be untenable to purchase and use,ie only the very wealthy could afford to own or use them..

They might start off cheaply to run at the moment, I say at the moment..!

Another point I keep hearing is electric cars have more environmental impact than ,combustion engines..with mining of lithium,battery wastage when spent and the biggest issue of all

Where is the main power coming from to power these cars..?

Interesting..?
Old-Cornishman
Posts: 688
Post #34 20 May 2022 22:25
0
In reply to Post #33
It's certainly a complex issue.
As you say the batteries are the electric vehicles biggest environmental downfall. Production, disposal and recycling all need a lot of work to reduce the environmental damage. If you consider this cost over a cars life then it doesn't look quite so bad but I suspect a lot of environmental corners are being cut at present to keep the financial costs down.

Hydrogen is making progress, as is synthetic fuel but both still have a way to go, the latter more so but ultimately they both could be less destructive to the environment than battery powered vehicles. Costs are much higher though so not so popular as the quick fix battery electric as things stand at present.

Renewable power obviously has to be the way forward whatever system we use and we will definitely need a lot of it. However something like fields of solar panels sat on what used to be good quality productive agricultural land has to be a step too far in my view. Just a cheap quick fix to meet a target at the detriment of food production. Perhaps we need a bit of long term planning and decisions made by someone not concerned about getting re-elected.
wandle1 wandle1
Posts: 7,469
Post #35 20 May 2022 23:26
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In reply to Post #34
It's really complex and potentially emotive, I see quite a few people that travel down from up the line,who use these electric cars,some have even had double portals installed,where I work.

First thing they seem to do is get out the long charging leads,and get charging..which seems to take a long time..

Only yesterday I was talking to a NHS ,doctor,who has a 21 plate electric golf,his biggest fear is running out of power on the way,interestingly, he got a huge discount from the government to purchase this electric car,I get the impression, he's not impressed with it ,other than acceleration of it..

I said to him you'll have to hook up with Gaia,but my poor joke was lost on him ,certainly I agree those solar panels in previously viable agri land is just wrong,...

I wonder how it will pan out,because the electric car ,is at the moment not the great panacea ,environmental saviour it's made it to be,..of course ..us plebs will be fed a load of wallopcod as usual..

Either that ,or in the future all the lithium mines ,will make old mine sink holes and shafts look like nothing ever happened down the county in past times...lol...

(I'm expert now at hyper miles)...
sundance sundance
Posts: 6,762
Post #36 10 Jun 2022 19:38
0
In reply to Post #16
Oh look

From the papers today. How to save fuel.

Drive more slowly
Driving quickly uses more fuel. According to the RAC, although there is no optimum driving speed for fuel economy, typically “cars are most fuel-efficient at between 45 and 50mph” – that's below the speed limit on open roads and motorways. On a motorway, driving at 80mph rather than 70mph is not only illegal, but will cost you: figures from the Department for Transport show that it can use as much as 25% more fuel.

Change gear
You will get the most miles for each gallon if you gear up when you can – the Energy Saving Trust recommends you change up early, “usually by around 2,000rpm”.

Aim for less braking
Smooth driving is more fuel-efficient than speeding up and braking suddenly, so aim to anticipate stops and take your foot off the accelerator. In March, Kevin Booker – a “hypermiler” who holds a world record for energy-efficient driving, told Guardian readers: “Read the road ahead for traffic lights and roundabouts, so you always keep moving. If there's a green light a fair distance off, there's a high probability it will be red by the time you get to it. It's all about pacing, so you get there when it's green. With roundabouts, feed into them rather than stop.”

Reduce your load
Empty your boot of unnecessary clutter and take off your roof box if you're not using it – any extra weight means you need extra fuel to move the car. Some analysis of roof boxes has suggested they can increase how much petrol you use by 50%, but other tests have found negligible difference. Road conditions and the shape of your roof box will play a part in fuel use.

John Ford from High Wycombe with his orange Ford Mexico at Burton-in-Kendal service station.
‘The cost has become absurd': UK motorists lament £100-a-tank petrol
Read more
Plan your journeys
Use a satnav to find the shortest route – or the most economical. Google Maps has been rolling out eco-friendly routing where, in addition to showing the fastest route, it will also display the one that is the most fuel-efficient (if it doesn't happen to also be the fastest). TomTom offers the same option. Where possible, combine trips rather than making several separate journeys.

Monitor your use
Get a sense of when and where you are using the most petrol by using an app to keep tabs on your use. Fuelio is one option – you can input details of when you fill up and log your mileage and get stats on your fuel economy.

Pump up your tyres
Letting the pressure fall on your tyres will mean you need to use more fuel, so keep them pumped up appropriately to reduce consumption. The RAC cites experts as saying that correctly inflated tyres can improve the mileage you get out of fuel by up to 3%. But do not be tempted to overinflate them, as that can lead to a loss of control – stick to the recommended pressure for your vehicle.

Turn off the air-con on short journeys
On short journeys on city roads opening the windows will be more fuel-efficient than putting on the air conditioning. On long journeys on the motorway, tests typically show that the air-con becomes more efficient, but opening the windows when you first set off to let out the hot air that's in the car will save you paying to cool it down. After that, don't drive with the air-con on and windows open at the same time – you are just wasting money.
mal mal
Posts: 8,986
Post #37 10 Jun 2022 20:01
0
In reply to Post #36
Point 3 ...

'Reduce your load' - so that's why my dad always asked if we'd been to the loo before long trips

noj
Posts: 11,459
Social photographer...
Social photographer... Post #38 10 Jun 2022 20:15
0
In reply to Post #37
Should've played the counting cars game mate. That's number 4
mal mal
Posts: 8,986
Post #39 10 Jun 2022 20:34
0
In reply to Post #38


Long week noj..
Bristolsaint40 Bristolsaint40
Posts: 243
Post #40 13 Jun 2022 10:25
0
In reply to Post #35
Dispel a few myths on electric cars,

Lithium, yes, it does have an environmental impact mining it, so does fossil fuels.

My car was carbon neutral by the time it was built due to recycled products and the use of renewable energy to build it.

Long charging times, it really isn't, on a fast charger I can refill from 10% to 80% in half an hour, standard is 3 hrs. I can even charge mine overnight on a 3 pin plug.

VW currently recycle 90% of the battery

Yes, they're more expensive but the costs are coming down. Add in the fact that based on 8000 miles year my fuel bill will be £232, that's less than 2 and half tanks of fuel.

The Golf E is awful and outdated, it takes 11 seconds to get to 60 and only has 125 mile range, no surprise he's worried about running out. New Kia EV6 has nearly 400 miles of range.



ip100 ip100
Posts: 12,494
Post #41 13 Jun 2022 11:39
0
In reply to Post #36
Oh look, more advice how to damage your engine...
Old-Cornishman
Posts: 688
Post #42 13 Jun 2022 19:16
2
In reply to Post #40
I'm intrigued, how can building your car be carbon neutral?
I can understand using renewable energy to power their factory helps but even if they were using 100% recycled materials (which of course they cannot ) that does not mean the whole process is carbon neutral.
Perhaps they buy carbon credits to offset their carbon footprint?

Having a smaller battery is not necessarily a bad thing unless you need the convenience of a good range. Apart from the increased carbon footprint from mining the extra materials, processing and transport, a bigger battery pack also means the total weight of the vehicle goes up, this causes increased road and tyre wear, extra wear or larger mechanical components and the energy efficiency goes down.
wandle1 wandle1
Posts: 7,469
Post #43 13 Jun 2022 19:29
0
It is suggested that in the future ,governments don't just want you to go electric in your car or other fuel source,potentially they do not want you to own a car full stop..

This is the potential agenda,however ..the argument from those in power and the green movement is that cars should be carbon neutral, from my perspective this is impossible to achieve..nothing man made or other can ever be deemed 'carbon minus',its just gobbledegook, perpetuated by those who seek to benefit from the sale ,manufacture of electric cars and components, for and made specifically for these modes of transport..

From the sidelines,yet again the great ,non researching ,gullible people of this planet will ,literally believe anything the media and the masters say..

There is NO such thing as green modus of transport, unless you walk or or cycle,even cycling has a industrial footprint..

These new battery cars are coming whether we like it or not ,but it will like everything else come at a cost to the environment..


The alleged climate emergency, which is debatable at best ,is being used to promote the electric car...

Who stands to benefit,who stands to make money..?

Bristolsaint40 Bristolsaint40
Posts: 243
Post #44 14 Jun 2022 10:19
0
In reply to Post #42
When it goes on sale in the summer of this year, Volkswagen's new ID.3 electric hatchback will claim to be the most environmentally-friendly car on Earth. That, you would assume, is down to the fact that its combination of batteries and an electric motor means it produces zero emissions of carbon, or anything else for that matter.

VW's plan is to go further than that, though. In fact, the German car giant says the ID.3 is not just zero-emissions in use (net of how the electricity that charges it up is produced) but is also carbon-neutral as soon as it leaves the factory.

The factory in Zwickau, near Leipzig, where the ID.3 is being built, has already been converted to draw as much of its energy supply as possible from renewable sources. Much of the power for the factory comes from hydropower plants, wind farms and solar parks, and where there are other emissions which can't be avoided, VW says it will offset them by working with the Katingan Mataya Forest Protection Project on the Indonesian island of Borneo. Most of the emissions needed to build an ID.3 come from the heavy industrial processes needed to make its batteries.

I agree completely in regards to having a smaller battery if you don't need it, we only do 10 miles a day on average would be ideal for us but having 4 kids means we need a 7 seater.
Bristolsaint40 Bristolsaint40
Posts: 243
Post #45 14 Jun 2022 10:32
0
In reply to Post #43
I agree on all you say but we will still have a need for cars, in regards to climate change, electric vehicles are more environmentally friendly than petrol and diesel.

Throw in the fact of more companies using renewable energy and it makes them more so. Yes the government are incentivising buying an electric car, yes they're pushing people towards buying them.

We already have a cost to the environment with petrol and diesel, oil drilling, the manufacturing of diesel and petrol, the manufacturing of the car and the emissions.

Electric cars will still have the manufacturing and mining costs but without the emissions so surely thats a good thing.

I did try to buy hydrogen as obviously even cleaner but the nearest station with hydrogen was in milton keynes and I live in weston super mare lol.

carpstar40 carpstar40
Posts: 3,706
Post #46 14 Jun 2022 11:16
0
These new electric car manufacturers might claim to be carbon neutral but the fact is all production will generate a carbon footprint do they assemble the vehicles in the dark with no heating on in the factories? following their distribution of the car from the factory everything then in delivering that car to the showroom and selling onto the new owner has a carbon footprint every time they plug it into the charger their is a carbon footprint as all electricity creating systems have a carbon footprint utter nonsense it might be slightly reduced but never diminished carbon neutral what a crock of poo.
Old-Cornishman
Posts: 688
Post #47 14 Jun 2022 13:51
1
In reply to Post #44
Have a read of the green energy wire article on electric vehicles by a respected group of German engineers ( VDI.)
Basically they say just having an electric vehicle only policy can be counter productive for the environment.
As I've said in the past we should be investing more research into hydrogen and synthetic fuels amongst other things, rather than just electric battery vehicles which is basically a cheap quick fix with substantial environmental production costs.

I would take any VW claim with a pinch of salt, after all they have bit of a history on environmental issues.
Planting or protecting a tree does not make production cleaner, it just counteracts it so they can say they are being green. In effect they are buying carbon credits for publicity.

Just to be clear I'm not against battery electric cars, it's just there is so much exaggeration and half truths about them being so environmentally friendly.
sundance sundance
Posts: 6,762
Post #48 14 Jun 2022 15:19
0
In reply to Post #41
Lol. You are nailing your colours to this one aren't you buddy.
ip100 ip100
Posts: 12,494
Post #49 14 Jun 2022 16:58
0
In reply to Post #48
Well it's fact I'm afraid.
Wayne Wayne
Posts: 18,776
Post #50 14 Jun 2022 17:32
0
I use standard supermarket diesel and then top it up with archoil DMax additive......cheaper than buying premium diesel from the shell / BP.......my 2.0 insignia is averaging 53mpg over 31000 miles.......
sundance sundance
Posts: 6,762
Post #51 14 Jun 2022 19:32
0
In reply to Post #49
Sounded more like its something you once thought you saw.

ip100 ip100
Posts: 12,494
Post #52 14 Jun 2022 21:55
0
In reply to Post #51
No it comes from my level 4 nvq motor vehicle technician qualifications
sundance sundance
Posts: 6,762
Post #53 15 Jun 2022 07:12
0
In reply to Post #52
But it's not fact. Just something you think.
No.more validity than some bloke having an unreliable
Audi then spending the next 20 years telling everyone
They are all unreliable.

Nothing I suggested ruins a car. And has never ruined mine.
ip100 ip100
Posts: 12,494
Post #54 15 Jun 2022 08:31
0
In reply to Post #53
No it's fact. Sorry if you don't agree but it is. You need to work the engine enough to burn off all the fuel, under revving doesnt do this because not enough heat is generated and the unburnt fuel causes deposits within the engine causing blockages, and in turn reduction in power. This is with all engines, but even moreso with modern diesels fitted with dpf.
My qualifications give me the validity. Anyone can drive a car, less can fix them
sundance sundance
Posts: 6,762
Post #55 15 Jun 2022 08:56
1
In reply to Post #54
Still doesn't.make doesn't make fact. No imperial evidence.
No official papers to back up your opinion. The phrase under revving is way too vague. None of stands up mate.

It is quite literally just your opinion of something you suspect happened. Its not even possible to know exactly how that person drove or treated their car. Especially compared to how I drive. And the way described in the newspaper. Which also comes from so called experts.

Massive difference between fact and opinion.
Bristolsaint40 Bristolsaint40
Posts: 243
Post #56 15 Jun 2022 09:11
0
In reply to Post #47
I actually looked at a Hydrogen vehicle, nearest place to refuel is the midlands and I live in the southwest.
fishie fishie
Posts: 1,771
Post #57 15 Jun 2022 11:11
1
Oooh ive not been on here much but here's my tuppence worth.

VW claiming carbon neutral.........wel lets look at there history of supplying data on MPG and how much their diesel cars produced on exhausts and measuring defeating technology...... mmm

All car manufacturers are the same they want you to buy new cars that's it, they don't care about environment, mpg/miles per charge they just want you to buy new cars.

Rather than building new cars why not invent conversions for older cars which saves them being sold/discarded/crushed. No lets recycle a small percentage of an old car to put in a brand new car which by planting a few trees they have managed to interpret data in the way they want and will look good for them.

I have attended many driving courses and probably drive my car harder than a greater majority of people. Planning ahead and looking further ahead allows for less harsh acceleration and braking. My MPG is no less than my families MPG. My brother and I have roughly the same MPG in the same vehicles but i get there faster and smoother than him and my wife prefers to drive with me than him. She's not shy of speaking the truth and would tell me if i drive like a knob
ip100 ip100
Posts: 12,494
Post #58 15 Jun 2022 11:18
0
In reply to Post #55
It's not opinion. It's fact. You're (poor) advice is the opinion part. I saw it plenty of times, and speaking with the lads who currently repair my company's fleet of vans it still happens a lot. It's also one thing which you are taught whilst doing the professional qualifications to be a technician. Are you really saying professional qualified people know less about the workings of a combustion engine than some guy with a driving licence? Give your head a wobble and stop giving out "advice" which could potentially cost people thousands of pounds in repair bills
sundance sundance
Posts: 6,762
Post #59 15 Jun 2022 15:21
1
In reply to Post #58
You need to understand the difference between opinion and fact mate.

And WHERE does anything that I said damage a car?
I will repeat it for you. Here it is from earlier.


We teach economy when driving. As we are training to look ahead and plan and react early, also to be defensive on position and speed when you can't see. That makes economical driving but there's room for more.

See a brake light. Come off the accelerator.
Junction coming. Come off the accelerator
Narrow gap,.oncoming traffic. Come off the accelerator
At the top of a hill. Come off the accelerator.

You can always go back on it.

If you are regular going from accelerator to brake you aren't
Observing and planning well enough.
ip100 ip100
Posts: 12,494
Post #60 15 Jun 2022 15:51
0
In reply to Post #59
I know the difference. I also KNOW what I'm saying is correct. I've explained this and you keep ignoring that. I'm done with this now. There's no reasoning with stupid
sundance sundance
Posts: 6,762
Post #61 15 Jun 2022 16:11
1
In reply to Post #60
I see you didn't answer where.my 'poor advice'
Damages a car. I mean it is.just good diving after all.

Whatever bee you have in your.bonnet belongs to you.mate.
I think you are just arguing with yourself about some point you think I.made.

Ive seen you on here. You could start a row in a empty room.
Now that's stupid. Yeh. Go away then and leave me alone.
ip100 ip100
Posts: 12,494
Post #62 15 Jun 2022 17:03
0
In reply to Post #61
Stop talking **** then
sundance sundance
Posts: 6,762
Post #63 15 Jun 2022 17:43
1
In reply to Post #62
Lol. That's you. You've replied to my posts though they wereny for you. It's a thread about MPG and people are talking about fuel saving.

And all you are doing as ever is arguing about some strong opinion you have. A few references about how knowledgeable you are. The obligatory reference to other knowledgeable people that you know, that all agree with your FACTS.

Other than bigging yourself up and misunderstanding posts
The only clear thing you've said is that an engine can coke up if a car is driven the way it wasnt designed to. Well no **** Sherlock.

Doing.anything TOO much or TOO little runs risks
That's what the TOO means.

However at no point did I advise anyone doing anything TOO much. FACT lol.

Of course, being disagreed with immediately upsets you
So you start acting.childish and inferring that I'm stupid.

I've kept out of your way for 10 years mate and had no plans to engage with you.You jumped on my reply to someone else.

I ask again. If you feel that way just leave me alone.

I
Old-Cornishman
Posts: 688
Post #64 15 Jun 2022 18:24
0
In reply to Post #56
Probably a wise decision at this time.
I believe it might be a bit more expensive per mile (you might be able to confirm that if you've done some research) but also a lot of hydrogen seems to be made from fossil fuels rather than renewables at present.
Cost and lack of investment again?
One big problem is that Hydrogen production and transport is relatively inefficient compared to electricity at present but perhaps that and the infrastructure will improve over the next decade if it gets used by the haulage industry.
ip100 ip100
Posts: 12,494
Post #65 15 Jun 2022 18:34
0
In reply to Post #63
Well what do you expect? I said very early on that your "advice" could well be counterproductive, and sorry if I feel I should speak up against piss poor advice, then I will. You argued and keep saying it's my opinion when it's not. It's fact. why do you think it's even taught at college for technicians qualifications? You're a driving instructor. Big deal. Anyone with a driving licence and a couple of years experience can do that. You don't think a pilot knows how to fit a new engine in his 747 do you? It's people with the correct training that do . You're potentially costing people a lot of money with questionable advice. If you did a few tests with different driving styles you'd be very surprised to see the mpg results. That I garauntee you. Next to nothing in it. Plus by the sound of it you drive like miss daisy, in this day and age that causes frustration in other drivers which I'm sure you will agree can easily be the cause of an accident (frustration that is,as you obviously won't criticise your driving style).
Yes your advice may well save a tiny amount of fuel. But look at the bigger picture and it can cost far more than that miniscule saving in repair bills.
I'm not bigging myself up at all,just saying that I have had the relevant training to comment about this with knowledge. You ask an electrician about electrical issues, a plumber about plumbing issues ,a roofer about roofing issues etc etc. So why would you rubbish what a fully qualified technician says about motor vehicle engines? And with all due respect you were the one who started with the stupid talk saying I don't know the difference between fact and opinion. And rubbishing what I know to be fact. You have been insinuating I'm stupid , you know that as well as I do. So if you want me to not reply to you, stop with the patronising nonsense.

Btw this is an open forum. People post . If you want to say something to someone on here without the possibility of a reply from elsewhere then use the pm system . It's what it's there for.
sundance sundance
Posts: 6,762
Post #66 15 Jun 2022 18:44
0
In reply to Post #65

Good day to you.
ip100 ip100
Posts: 12,494
Post #67 15 Jun 2022 18:58
0
In reply to Post #66
And to you too
noj
Posts: 11,459
Social photographer...
Social photographer... Post #68 15 Jun 2022 19:16
0
Well most of my driving is well below 3000rpm and I have no issues with my dpf...
That is in 6th though
I don't understand rushing then slowing down for corners either..
Go round the corners faster and drive in the highest gear you can to keep the revs down. Occasionally ragging the **** out of it at junctions and slip roads.
My fuel economy on average, alas, is terrible
Goose Goose
Posts: 12,901
Post #69 15 Jun 2022 19:48
1
In reply to Post #68
The way Sundance has advocated and teaches people to drive is the way advanced drivers and motorcyclists are taught and that is FACT as I've done both and had instruction from a police motorcycle rider. Nowhere has he advocated labouring the engine which can cause problems, he has said using the right gear etc. Correct road positioning allows better veiw of what's ahead and allows the driver/rider to respond accordingly. Making good progress is a term off ten used by police instructors and that doesn't mean revving the nuts out of an engine, going at silly speed, slamming brakes etc. Quick is smooth progressive driving/riding and road positioning is vital.
sundance sundance
Posts: 6,762
Post #70 15 Jun 2022 19:52
0
In reply to Post #69
Thank-you mate. I thought I had been clear.
benyel29 benyel29
Posts: 1,174
Post #71 15 Jun 2022 20:00
2
In reply to Post #60
Have a day off mate. You had an nvq in mechanics in the 80s. Prob worth the same as my home economics in school. Everything you've backed it up with is “people still in the trade”. So your clearly not still in the trade.... Fact

Bit like when people ask what fishing van to get? I say get a berlingo, you say don't get a berlingo cause during the war I used to be a mechanic. Guess what. That berlingo you advise me not to get has never missed a beat

So maybe sometimes your FACT is not FACT.... FACT
noj
Posts: 11,459
Social photographer...
Social photographer... Post #72 15 Jun 2022 20:29
0
In reply to Post #69
Im agreeing with all of that mate. Having ridden bikes before driving I'm aware of reading the road. I'm saying build up and maintain your speed in a gear which provides the lowest revs to save fuel, but my impatience means I usually negate that by building speed up too quickly and wasting fuel.
ip100 ip100
Posts: 12,494
Post #73 15 Jun 2022 21:48
0
In reply to Post #71
Bristolsaint40 Bristolsaint40
Posts: 243
Post #74 16 Jun 2022 10:02
0
In reply to Post #64
Hydrogen is around £50 for 200 miles, average price of kw/h is 21-28p per hour.


for me to get a full charge from 0-100% takes 18 hrs based on a 3 pin plug and gives me 260 miles. I use a 2.6kwh charger.

Costs me £13 to fill the tank.
Old-Cornishman
Posts: 688
Post #75 16 Jun 2022 17:22
0
In reply to Post #74
Good info there. Thanks for sharing.

Definitely looks like you have made the right choice.
Perhaps hydrogen will become more viable in the future.
benyel29 benyel29
Posts: 1,174
Post #76 16 Jun 2022 20:11
0
What happened to the hydrogen revolution. I remember about 10 years ago we had hydrogen buses in London.

What stalled/stopped it?
Old-Cornishman
Posts: 688
Post #77 16 Jun 2022 20:54
0
In reply to Post #76
Cost, lack of renewable energy, lack of investment in the right systems take your pick.
It's not that efficient to produce so we would would need more renewable energy. Not really very cost effective to produce compared to other fuel sources at present. This is probably the biggest stumbling block for politicians as it would need more investment.
Getting hydrogen from fossil fuels seems to be the easiest way at present but as gas prices are rising then that doesn't look so clever any more.
Bottom line is battery electric is a cheaper system for cars so that's what gets pushed at present. Still enough diesel so no rush?
We will need something for the heavy goods transport eventually so I think it will come but someone will need to spend money.
Bristolsaint40 Bristolsaint40
Posts: 243
Post #78 17 Jun 2022 09:41
0
In reply to Post #77
I think you're right, hydrogen will be the way forward for HGV's, as soon as you start putting any load on an EV, the battery range reduces, colder weather the same so it will need something more stable.

A lot has happened in the EV market, batteries now recyclable, 400 mile ranges now getting more common but the range will always be an issue for HGV's etc.

Tinhead Tinhead
Posts: 17,089
Post #79 17 Jun 2022 10:09
0
In reply to Post #78
Eventually will you be able to fill you car with hydrogen like you do in a petrol station?
That would solve governments problem of taxing fuel, it will be done at the filling station.
Bristolsaint40 Bristolsaint40
Posts: 243
Post #80 17 Jun 2022 10:26
0
In reply to Post #79
but 5 x the price of electric for electric for less range?
Tinhead Tinhead
Posts: 17,089
Post #81 17 Jun 2022 10:56
0
In reply to Post #80
I'm sure there were reservations about EV's a few years back, there still is, there's not enough charging points.
I don't know anything about hydrogen cell vehicles but if it was possible to fill up at a filling station then converting existing petrol stations to hydrogen might be more doable?
Whether this is possible I don't know but I can't see EV charging infrastructure being ready for 2030.
Goose Goose
Posts: 12,901
Post #82 17 Jun 2022 14:03
0
In reply to Post #81
Electric is great for local journey and reasonable for commuting but the 400 mile range is bullshine in real world driving.
snapper1 snapper1
Posts: 3,101
Post #83 18 Jun 2022 18:25
0
In reply to Post #76
when WE ARE ALL electric then we need to be hidrogen
Goose Goose
Posts: 12,901
Post #84 18 Jun 2022 21:04
0
In reply to Post #83
Hate to ask are friends electric.
snapper1 snapper1
Posts: 3,101
Post #85 19 Jun 2022 10:44
0
In reply to Post #84
Goose Goose
Posts: 12,901
Post #86 19 Jun 2022 12:05
0
In reply to Post #85
https://youtu.be/-0WNbm1jz6A
snapper1 snapper1
Posts: 3,101
Post #87 19 Jun 2022 12:58
0
In reply to Post #86
gotya
Mr-Thomas Mr-Thomas
Posts: 74
Post #88 20 Jun 2022 00:02
1
In reply to Post #69
I've had advanced driver training twice, once with an x Met traffic cop, he said pretty much the same thing.
sundance sundance
Posts: 6,762
Post #89 20 Jun 2022 08:04
0
In reply to Post #88
Yeh, it's not rocket science. It shouldn't really be considerd advanced. I teach it to all my learners from day one.

There is no logical reason to accelerate to.a higher speed when you can already see the reason to slowdown ahead.

Something I didn't mention earlier is tailgating. No logic to that either. I often drive through 2 or 3 towns 7 cars all.bunched up
All braking in succession. And me 50 feet behind not touching my brakes.
Goose Goose
Posts: 12,901
Post #90 20 Jun 2022 08:38
0
In reply to Post #89
Tailgating, the worst position to be in to perform a safe overtake.
Mr-Thomas Mr-Thomas
Posts: 74
Post #91 20 Jun 2022 15:32
1
In reply to Post #89
TBH it was only part of the course, at one point we were driving in what he called pursuit style (within the speed limits). That was very good especially the road positioning part, straight lines through bends etc use of speed and using the whole road not just your lane, he told me some brilliant stories about his life in cars and on bikes in the Met.

Whilst you're on about breaking etc and slowing down, I had a new Merc delivered back end of 21, the thing reads road signs and knows the roads speed limit, it slows the car down when entering a new speed limit and slows the car if you get too close to the car in front which can be useful, the lane assist part drives me nuts though so I switch that off , goes to show where the technology is heading

As for MPG its all bull****, my car is a Hybrid and the leccy part has nether done the mileage Mercedes said it would, personally I dont care as I get back a lot more per mile in expenses anyway, as stated earlier its the tax the car saves me that matters, in excess of £300 month. If your not a company car driver you'd probably bee very pissed off, I can see this being the next scandal for the industry as per the fuel admissions scandal.
member member
Posts: 1
Post #92 14 Jul 2022 13:49
0
In reply to Post #91
Suppose you want to shorten your fuel expenses. In that case, you definetly need to change the vehicle for the less expensive one, try to check for hybrids or tesla, also they new mechanisms in the modern cars that slow the cars depending on rules increasing the amount of consuming fuel by average, so I recommend to turn this feature off, at least when you are out of town. If you decide to buy a hybrid car or car that will lower consuming fuel costs, I can recommend you to visit this car dealer website https://www.jdmbuysell.com/jdm-importing-tips/how-to-import-a-car-from-japan/. They are importing different vehicles from japan, and we all know that japan cars are mostly low costers.
RKB
Posts: 1,731
Post #93 14 Jul 2022 14:37
0
I got a new fishing wagon recently, and the mileage it's been doing has been appalling. Then I realised that I had the AWD button turned on the whole time. It's better now.
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