I can only tell you by the trip computer so don't know how accurate that is. I tend to drive to the speed limits although, very seldom at 70mph; tend to stick to 60/62 on the sat nav, can't see the dash dials and get between 23 & 26mpg. I have a 2015 Auto Trail with 150BHP and Comfortmatic gearbox. As you say, whatever you get, it's worth it