VW Golf GTD 2011 - Real MPG's

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Sat 5 Mar 2016 21:48
VW Golf GTD 2011 - Real MPG's - rpc1977

Dunno if anyone can verify my query......

The real mpg section does not state whether or not customers/members are logging readings from their own fuel computers or actually basing miles per gallon on refills at the forecourt?

The reason I am asking is all modern cars I have owned are approximately 5-8 mpg over what the actual reading is! Volkswagen included.

I would be interested to see if people actually base the odometer miles on tank size/amount of fuel required at fill up as oppose to what the average fuel computer says.

I have owned my current VW Golf GTD for 2 years 5 months now. Always 5-8 out when I fill up with fuel.

Just for the record; I own a 1985 Ford Granada 2.8 Ghia X. The fuel computer still works and is 100% accurate!

I find it strange as following 8 years of driving various HGV's as a job, every truck fuel computer is accurate to within the 0.1 of a mile. I have been paid on fuel bonus with 3 different companies and they always come back in response to fuel receipts with what is displayed on the truck dashboard.

Please respond......

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Sat 5 Mar 2016 22:33
VW Golf GTD 2011 - Real MPG's - galileo

5-8 mpg seems excessive - we have a 1.3 petrol Yaris, just filled it today, display said 35 mpg,brim to brim calculation was 33.2.

Filled my i30 the other day, display said 38 mpg, calculation was 35. (Yaris does more short, urban runs)

Previous Toyota Corolla displays were again maybe 10% optimistic but accuracy depends on type of driving and, I guess, driving style.

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Sat 5 Mar 2016 23:33
VW Golf GTD 2011 - Real MPG's - Peter.N.

I have one in a C5 that seems to have a mind of its own, consumption looks good on the display but its actually doing about 10 mpg less that it says, same engine in a 406 and it reads pretty well spot on.

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Sun 6 Mar 2016 00:06
VW Golf GTD 2011 - Real MPG's - Big John

Recent experience:-

2003 Skoda Superb I 1.9 pd 100 - under read by about 4mpg (Fuel Computer 46, real/measured 50) - recently sold

2006 Fiat Panda 1.2 - over reads by about 4mpg (Fuel Computer 42, real/measured 38)

2014 Skoda Superb II 1.4tsi - accurate (Fuel Computer 46, real/measured 46)

I've put my own figures onto the HJ Real MPG based on my real/measured figures

Edited by Big John on 06/03/2016 at 00:16

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Sun 6 Mar 2016 07:48
VW Golf GTD 2011 - Real MPG's - RT

My own experience is that trip computers can be between 3-10% optimistic

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Sun 6 Mar 2016 08:00
VW Golf GTD 2011 - Real MPG's - gordonbennet

Only ever had one car modern/complicated enough to have a mpg display, and i can't recall the comparison.

Agree with the OP re HGV's, we have a computerised fuel bowser at work and that agrees very closely to the on board readings the few times i've bothered to check.

Edited by gordonbennet on 06/03/2016 at 08:11

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Sun 6 Mar 2016 09:19
VW Golf GTD 2011 - Real MPG's - carr

My Fiat and Nissan speedometers both read about 10% faster than the GPS and I am certain that the GPS is accurate.

I guess the speedo is using the same distance-travelled computer parameters as the fuel display and the odometer so I would expect the car's mileage and fuel consumption to be both over-stated.

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