Absolutely. Rather than take the full tank challenge, I'll extrapolate from my regular average. I'm getting ~40mpg every work week (30ish at weekends, 45+ in the week), which I think equates to about 440 miles from a full tank which matches pretty well with the trip computer's guesstimates. No special driving techniques involved. < 80mph at all times, cruise control on dual carriageways and dull A-roads. Set off to work at 6:30 am to avoid traffic