Hi I get 29-31 on the motorway. 35-39ish around town. Have you noticed that when you fill the tank to the max, How fast it goes down to 3/4 full. On my motor it only takes about 18 miles. Then when you get to the last 1/4 it seems to take forever to get to the fumes. It must be something to do with the reader float. When I first noticed it I thought I must have had a leak.