On about a 25/75 mix of highway and city driving, I normally show around 8.4 liters per 100km. For imperial gallons, that's around 34 MPG. For US gallons, that's around 28 MPG. I only run premium fuel.
That's in a 3.0si roadster. I accelerate at a relatively brisk rate, but with the torque this engine has I do usually shift fairly low (3500 RPM or so) unless I have a need to wind it out.
No complaints on fuel mileage for me - I'm very happy with this kind of power and economy of operation.
