I just took possession of a loaded SEL - and was extremely dissapointed with the average mileage being only 24 MPG until I topped the tank and discovered I'm actualy getting 39 MPG! I set the trip odometers (1 and 2) at the same time - trip 1 says I'm getting 24.9 MPG average and trip 2 says 23.0 MPG! Then this morning the clock was an hour fast so I thought I was late for work, then when it turned from 6:59 to 6:00 then 6:01 (before I filled the tank) I figured ah ha - software glitch. Maybe mine has not been updated?
Otherwise I'm very pleased with the car!