MK7 GTD - Real Life MPG

[fredgroves]

Does the DTUK actually increase MPG? I would guess it will mess with the MFD figure, have you checked the MPG manually (ie mileage vs number of litres you sling in)?

Genuine question there, not a dig

[monkeyhanger]

Does the DTUK actually increase MPG? I would guess it will mess with the MFD figure, have you checked the MPG manually (ie mileage vs number of litres you sling in)?

Genuine question there, not a dig

It definitely increases the optimism of the MFD reading, from around 3% stock to around 9% with the box on (as per my numbers above), but my car definitely seems more economical with it on (taking the optimism into account), which I suspect is mainly down to far fewer DPF regens which give the MPG a real kicking. I have really looked into it in the early days with and without the box to come up with those 3%/9% figures from brim fills.

[p3asa]

Out of interest Matt do you still use the derv additive, Millers Oils?

I've stopped using it and I don't know if its my imagination but my car feels rather sluggish now in the low rev range!

[monkeyhanger]

Out of interest Matt do you still use the derv additive, Millers Oils?

I've stopped using it and I don't know if its my imagination but my car feels rather sluggish now in the low rev range!

Yes, still use Millers, i'm 1/2 way through a big 5L can. I can tell when there's none in the tank.

[p3asa]

I think I'll get some more.
My problem was the smell of it and the smell on your hands after putting it in regardless of how careful you are.
Any recommendations for the 5L can?

[silver38]

There was a case recently in the states about Hyundia / Kia  claiming real life mpg for new cars that turned out to be incorrect, this resulted in a large fine, the difference was 1 or 2 miles. Maybe it's time UK customers took a court case against VW for their diesels.

[monkeyhanger]

I think I'll get some more.
My problem was the smell of it and the smell on your hands after putting it in regardless of how careful you are.
Any recommendations for the 5L can?

There was a place online I got the 5L can from that was cheaper than everywhere else....Watsons? I really can't remember. It ended up £60 delivered for the 5L can as opposed to about £75 elsewhere.

It is an evil smell. I can smell the residuals of the last lot when I run the tank down to 20 miles left and fill up again.

[monkeyhanger]

There was a case recently in the states about Hyundia / Kia  claiming real life mpg for new cars that turned out to be incorrect, this resulted in a large fine, the difference was 1 or 2 miles. Maybe it's time UK customers took a court case against VW for their diesels.

All the UK car advertising now has arse covering messages like "67 mpg combined*" "* test conditions only, may not reflect actual mpg achieved on the road". It would be very difficult to sue them for misrepresentation now.

[corgi]

There was a case recently in the states about Hyundia / Kia  claiming real life mpg for new cars that turned out to be incorrect, this resulted in a large fine, the difference was 1 or 2 miles. Maybe it's time UK customers took a court case against VW for their diesels.

Sounds like rumour dressed as fact... 1 or 2 mpg difference could easily be down to driving style, weather conditions or whatever... You could try taking them to court here but you would fail.

This is the UK (or more correctly, in this case, EU) not the US and the manufacturers have to use the official test figures in advertising. And because they have to use those figures they make the cars very efficient in for those tests which are run on a rolling road, at a set ambient temperature... etc. hence why more and more cars are fitted with stop/start systems... The cynic in me thinks that cars may even recognise the test conditions and behave even more economically...

I'm sure that I read somewhere that there is a new more representative test coming...

[virginVWman]

On an hour and a halfs drive from Edinburgh to Kingsbarns for a day of golf I managed my best mpg yet...59! Can't wait to do the same drive in the R...thatl be like 35 at best