i got an Range Rover 4.4 litre and a Crossfire roadster, my wife uses the roadster every day and get s around 22 MPG when she uses it on a run it gets 29 - 30 MPG when i use it on a run i get 25 - 26 MPG around town i get around 8 MPG from the Rover but can get 16 MPG on a run. haha