What have VW done here? Aero or detune?

[itavaltalainen]

So why is your figure different to the German configurator?

German configurator is mk7.5, mine is a pre-facelift.

[fredgroves]

I've had just over sixty out of mine. Warmish day, long motorway drive in the Netherlands doing 70mph on acc. I reckon if I did 50mph it would be maybe 63. It's not improbable, it's just that all of the conditions need to be there.

That's very good.  My missus has 2014 GTD and does mainly motorway driving, albeit in rush hour.  She gets 49 max, all the time.  Maybe its a UK thing!

Weight/wheels/temperature/stop-start and gradients is the key... I had 60mpg from Switzerland back home once as well and that had some fair old ups and downs before hitting the low countries.

[Sootchucker]

My (new) 2016 GTD - worst possible combination for economy - 19" Santiago's and a DSG Box.

My computer checks out to be approx 1mpg optimistic (quite accurate), and where indicated before at over 60mph (or near too it), when I've done a fill up (brim to brim) then manual calculation it's been very close to the on onboard computer.

As Fred says not impossible but you have to be driving carefully to get that. On this one I was sat at just over 50mph for most of my motorway journey home due to roadworks and average speed cameras.



Anyway, back to Fred's question, the figures are mystery. Especially as the new 7.5 GTD has the new 7 speed DSG box rather than the old 6 speed, and if that 7th gear is more of an overdrive, you would expect the Co2 and MPG figures to be a little better.

[fredgroves]

Those figures are for 5 door manual.... my current car and the 7.5's...

Not DSG... yes, really, DSG is even worse...

[mcmaddy]

VW recently said the economy and co2 figures published from now on were to be more real world. It was in an article in vw driver magazine a good few months ago. I don't think it's anything untoward other than staying more realistic figures.

[fredgroves]

VW recently said the economy and co2 figures published from now on were to be more real world. It was in an article in vw driver magazine a good few months ago. I don't think it's anything untoward other than staying more realistic figures.

That may well be the answer, but really, how can a standardised EU technical measurement test be conducted "more realistically"

Honestly, I've never heard such guff. (not pointing this at you McMaddy!)

That's like me saying I've got a 24" willy, measured using a tape measure then when challenged about it saying that "oh maybe I read that wrong", its only 12" (;-))

[I wanted a GTi]

VW recently said the economy and co2 figures published from now on were to be more real world. It was in an article in vw driver magazine a good few months ago. I don't think it's anything untoward other than staying more realistic figures.

That may well be the answer, but really, how can a standardised EU technical measurement test be conducted "more realistically"

Honestly, I've never heard such guff. (not pointing this at you McMaddy!)

That's like me saying I've got a 24" willy, measured using a tape measure then when challenged about it saying that "oh maybe I read that wrong", its only 12" (;-))

They test the cars in a rolling road so it is quite easy to get the figures they say by testing it that way. VW are not the o my ones doing it this way.

[fredgroves]

How do you mean? I fail to understand... Also surely to God a third party does the testing, not the OEM?

[phope]

Testing is done by the manufacturer to the standards under NEDC requirements - there's a change this year to NEDC requirements, which will partly account for the revised figures for the facelift cars

http://www.caremissionstestingfacts.eu/rde-real-driving-emissions-test/

http://www.autoexpress.co.uk/car-news/consumer-news/90816/euro-6-emissions-standards-what-do-they-mean-for-you

[I wanted a GTi]

How do you mean? I fail to understand... Also surely to God a third party does the testing, not the OEM?

Look here https://www.google.co.uk/amp/s/www.carwow.co.uk/guides/running/what-is-mpg-0255.amp and scroll down to see the details.

It is the manufacturers themselves that test the cars.