What have VW done here? Aero or detune?

[fredgroves]

I know its been a bit of theme from me, but wondered whether anyone can explain what has happened with the 7.5 GTD.

I have a 2014 Mk7 GTD 5 door manual on 18's.

Its power output, 0-60 time are identical to the 7.5 GTD and GTD-Blue but the CO2 figures and MPG are a fair bit different:

109g/km 67.3 mpg 2014 GTD

125g/km 60.1 mpg 7.5 GTD

119g/km 62.8 mpg 7.5 GTD Blue

Has anyone got the slightest clue as to what VW have done? Comparing the GTD 2014 with the 7.5 GTD everything is the same (actually the new 7.5 has Seville's rather than Nagaro's)...

There's something weird here as its all tested under the same test regime, so its not that.

Only things I can think of are:

1) VW had to make some sort of different tuning for the 7.5 oil burners after disielgate. In fact, didn't I see someone saying about their car having been messed with by a workshop and had worse MPG afterwards?

2) The aero with the new front end is totally sucky. I can't imagine that would be acceptable for VW would it? They wouldn't choose looks over better economy figures?

Anyone got a clue?

PS extra question... did VW previously offer a 17" 17" Curitiba option in mainland Europe? The GTD-Blue comes with these and when I google the wheel name, you see quite a few?

[itavaltalainen]

Maybe the mk7.5 figures you have are of DSG equipped cars?
Mine is 127g/km - MY2017 mk7 GTD with DSG.

[I wanted a GTi]

Maybe VW bullsh!t 18% less now.

[fredgroves]

Maybe the mk7.5 figures you have are of DSG equipped cars?
Mine is 127g/km - MY2017 mk7 GTD with DSG.

No those are definitely manual figures (from my lease company!)

On the 7.5 the gap between manual and DSG has come down.

[itavaltalainen]

VW figures in german configuration suggest 116g/km for manual and 122g/km for DSG.
Who's the lease company, most are more than useless.

[fredgroves]

So why is your figure different to the German configurator?

[davyk31]

Simple enough - VW lied, then they got caught, now they have to tell the truth or certainly be closer to the truth.

[matchboy]

Those figures are hilarious    Over 60 miles to the gallon from a GTD is virtually impossible in the real world.  Take at least 10 off that figure.

[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.

[matchboy]

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!