There some threads on this - but it seems to more generally based rather than best you ever got. Went on holiday this week did around a 650 mile trip. Fuelled up at Tesco @ £1.15 a litre - full tank. Car was fully loaded - suitcases etc - A/C was on and cruise at 70mph (where possible due to roadworks) most of the way. I was mighty impressed : 63.4 MPG (did hit 64.5 but was stuck in traffic) Theoretical range of 773 miles. And still have a full tank of gas! Whats your best figures so far?