New Q7 85 litre fuel tank

[JMB7]

Did anyone else spec the larger tank?

I did but I'm not sure it's actually been fitted. I've ran the tank as low as I dare and the most it's taken to fill is 73 litres, I understand the standard tank is 75 litres. Asked the dealer and he just emailed me back the spec sheet showing 85 litre tank.
Short of running it completely dry I'm not sure what else I can do.(Last refill was at 5 mile range shown).

Just wondering if anyone with the larger tank has noticed if it's ever taken more than 75 litres to fill.
Thanks

[Nemo78]

Most mine has ever taken was 70L but it was about 15miles to empty. I have standard 73L tank.

The not so scientific way to look at it - I'm getting between 400-450miles per refill at a horrendous 24mpg (my driving is mainly city at the moment - motorway get up to 35mpg)

[JMB7]

Cheers, I'm getting about 32mpg average at the moment, but more dual carriageway driving.
Is that 450 the range shown on the dash after filling? Mine shows 595 miles range after filling. Not sure what I'm actually doing per refill though.

[Nemo78]

The 450 is actual - range is always 550+ but then comes down quickly in traffic..

[nathanparrett]

I purchased the 85l tank. Although only 75l is ever usable!