A7 Fuel economy

[Scott K]

If you can get access to VCDS, the computer can be adjusted to be more accurate. It looks like you are about 12% out which does seem high. Mine is about 8% out.

[M1tchy]

If you can get access to VCDS, the computer can be adjusted to be more accurate. It looks like you are about 12% out which does seem high. Mine is about 8% out.

Any idea how to do that? It would be good to calculate it and get a true readout.


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[Scott K]

Hi Mitchy, this is lifted off another forum. Haven't tried it myself but will give it a go sometime. By the way, did you ever get the speed limit recognition? Cheers, Scott

Correct Fuel consumption in DIS (C7): (Revised)

[17-Instruments]
[Coding - 07] > [Adaptation - 10]
Scroll down about 20 items in the drop down list until you see something like fuel consumption adaptation - change the value from 100 to higher or lower:
Example - if your DIS is consistently off by 7% to your actual calculated mpg:
You RAISE the number to the percentage if DIS is OVER reporting mpg (i.e. 107)
You LOWER the number to the percentage if DIS is UNDER reporting mpg (i.e. 93)

[M1tchy]

That's great thanks. Got a 600 mile round trip tomorrow so will see what I get.

No never got traffic sign recognition working, looks like I need another module - and the wife says no! Really annoying though because I activated it for a forum member over xmas on a mk7 golf and it worked perfectly!


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[stephenl]

On board computer long term value is 39.1MPG while actual figure worked out by brimming it at the fuel pump is 37.7 over same period. 7617 miles at this stage. best I have managed is 50MPG on long journeys over 70miles.

[Nshaw598]

Hi. Something must be wrong with mine. Just yesterday picked up my 2017 A7 Bitdi Black Edition. Traveled a 40 mile journey did not go over 85, had a few squirts on the A roads but nothing heavy. Only returned 26mpg. Is this because it's brand new and needs to be run in? Very strange considering the figures I have seen on here and that Audi quote. Even done a slow plod home from the station about 2 miles and it returned 24mpg. Any ideas why?

[Danny-boy]

I have had a few new cars, and each one started calming down on consumption after 5k miles.

My E Class was hitting 25mpg for the first 5k, then jumped to 40 average afterwards.

[Corb2000]

My A7's figures over 15k to date are similar to others, 35mpg on 30 minute A road commutes & 40ish on motorway runs. My previous BMW320d did high 50s consistently over 65k no matter how hard I drove it - which was very close to the official figures.


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[Nshaw598]

Ok. Hopefully it will improve, it only has 75m on the clock. It's currently worse than my 4.4 V8 Range Rover that I have just sold. I am going to Northfolk for the weekend. A couple of hundred miles each way. Hopefully that will help. I will keep you posted. The figures you guys are talking about is what I was expecting.

[M1tchy]

Yeah it gets better. Mine was rubbish for the first 3-5 thousand but now gets 40 on a normal journey and just under 50 on a long motorway trip.


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