My '09 blue Ten is a courier bike. 18,000 miles since end of March and only just changed the original front tyre! (still about 2mm tread left) Rear changed at 12,000 miles; chain & sprockets at 17,000! Constantly getting 63-65mpg. Worst was about 58mpg - best so far has been 70mpg. It'll chuff along at motorway speeds on half throttle. Came back from Milton Keynes to Guildford on reserve once (about 70 miles). Then the next day came back from Towcester (another 15-20miles) on reserve!
ROCK ON!