my 2000 4x4 1500 dodge was getting 15. My friends 1996 ford f250 4x4 was getting 10. Now he has a diesel and he gets 18. Boy, is he happy. I would never have bought a diesel if I didn't think I could get 18+. If my truck was only getting 10-12 I would have put a bomb in it, or ask for my money back.