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![]() | Home > General > Marginal improvement in MPG |
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DrownedRat Member Since: 19 Oct 2009 Location: Back in the hot seat Posts: 496 ![]() ![]() ![]() |
Don't forget the mpg is an average = if it starts off poor then you need to do more 'good' miles to bring it up to a reasonable figure. |
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Boxer Member Since: 26 Dec 2009 Location: S Wales Posts: 354 ![]() ![]() ![]() |
Just did a 70 mile round trip, from my house to Cardiff, Set the computer as I pulled off the drive, Average for the full 70 miles 44.6 MPG. |
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flycop2000 Member Since: 16 Jul 2008 Location: Scotland Posts: 282 ![]() ![]() ![]() |
I wish I could get 44 mpg, I was getting 38 mpg on my work run until January when all of a suddden my mpg dropped to 33 and I've not been able to get it up back again no matter how careful I drive. Tried a couple of bottles of fuel system cleaner but alas no difference. I have been using VPower diesel.
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Junior Member Since: 22 Feb 2010 Location: M6 Posts: 799 ![]() ![]() |
Have you checked your tyre pressure? |
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flycop2000 Member Since: 16 Jul 2008 Location: Scotland Posts: 282 ![]() ![]() ![]() |
Yes, I checked tyres and also checked engine oil level. I forgot to mention that around 6 times in the last 3 months when I drop to 4th or 5th gear to overtake, the car accelerates for a couple of seconds and then loses power for a second or two before accelerating again. Could this be fuel or air filter related ? |
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The Valeter Member Since: 08 Jan 2010 Location: Medway Towns, Kent. Posts: 1530 ![]() ![]() ![]() |
Wish I could get anything like 38 mpg - High 20's is what I get & they say there is nout wrong with the heap. (Past) Freelander 2 HSE 2010 MY In Rimini Red. (Past) RR Evoque Dynamic Lux Si4 In Firenze Red. (Past) RR Evouque Pure Tech in Barollo Black with bespoke Firenze Red colour coding. (Present) Freelander Metropolis 2015 MY In Santorini Black with Ivory Premium Leather. |
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xtattsbox Member Since: 26 Jan 2010 Location: Suffolk Posts: 413 ![]() ![]() ![]() |
30mpg out of mine. The actual figures:
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mcphersonstrut Member Since: 21 Jul 2009 Location: In the land of 2 wheel drive and 60mpg Posts: 2164 ![]() ![]() ![]() |
Ditto to X'box |
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Dave Member Since: 04 Jul 2007 Location: Somewhere Near You Posts: 2666 ![]() ![]() ![]() |
Cold weather effects the mpg quite a bit, should go up again when/if the weather gets warmer ______________________ 2011 Full Fat RR 4.4 TDV8 2012 FL2 SD4 Auto HSE 2013 Kawasaki Versys 650 |
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xtattsbox Member Since: 26 Jan 2010 Location: Suffolk Posts: 413 ![]() ![]() ![]() |
Now I'm confused. Back in those dark Subaru Forester days, I took it to a rolling road. They said that they could get another 25% power out of the engine by using a larger intercooler, cold air intake and remap. Basically cooler air takes up less space and so there is more air in the cylinders improving combustion and burn. Whether this is the same with diesel I really don't know, but I thought that fuel economy improved slightly in the cold. But I may, and it certainly wouldn't be the first time, but talking ![]() |
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xtattsbox Member Since: 26 Jan 2010 Location: Suffolk Posts: 413 ![]() ![]() ![]() |
Nope, I've found it. Totally talking out of my ar |
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flycop2000 Member Since: 16 Jul 2008 Location: Scotland Posts: 282 ![]() ![]() ![]() |
I must admit, I thought colder air temp improved mpg on Turbo engined vehicles? |
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Dave Member Since: 04 Jul 2007 Location: Somewhere Near You Posts: 2666 ![]() ![]() ![]() |
You will find you'll get better economy when the weather is damp and foggy something to do with the water vapour helps diesel atomise better for combustion.
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pcheaven Member Since: 19 Jan 2010 Location: Kent Posts: 1459 ![]() ![]() |
doing 70-90 mph |
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