Originally Posted by NISFAN
Yes, on the motorway 80 ish it will do around 27-28mpg on the computer. I am going to check this with a fill up, but so far I have done 350miles and there is 110mile range showing on the computer. That would equate to 26.1MPG which is fantastic for a 560BHP engine.
if that works out I am definatly going for the M5, thats really great as most all my driving is out of town and no short journeys at all.