My long term average is about 38-39mpg with a mix of driving. Town driving and going for a spirited drive down B roads - early 30's. Motorway steady 70 for a good distance 44mpg. Have seen 50, but that was a long drive through a lot of 50mph road works on the M1. Listen for chain rattle at start up. There doesn't want to be any, or that'll need changing before too long.