Just done a full tank to tank test and calculation.
Used the same pump at the same station to make sure it was accurate!
Breaks down like this:
55.9 litres equals 12.29 gallons.
537.9 miles from the tank.
This equates to 43.7mpg over the tankful. The computer says 42.7mpg.
The tankful was a mix of motorway (between 70mph and 80mph with a few spirited overtakes..) and town driving/commuting. Approx a 75/25% motorway/town driving mix.
As the car only takes £72ish to fill from the empty light, this makes it around £12 cheaper per tank than the 159 to fill, and I am getting the same amount of miles from each tank. So am pretty happy!
Still finding the engine and chassis limits as I have only had the car 2 and a half weeks, so these figures will hopefully rise as I ease off the experimenting.......yer, right.......