Mine gets 14. 8 stop and go mileage empty. I get 11. 5 pulling my loaded fiver at 70. I don't do any better empty or pulling a horse trailer. I can get nearly 20 at 55, but who drives 55? I'll get rear-ended if I do! I don't see what all the fuss is about the 600's. I shoulda got one instead of searching for an 03!!! :{