what kind of millage are you getting on your ex35. I am averaging 23 city/highway
if I drive 55mph I get 30-31 highway, at 65mph I get 26-28mpg at 75mph I get 24-26mpg
If I drive like a sports car and punch it, its pretty much 17-24 but driving with cruise control and coasting over breaking, I seem to average 23-28. I don't live in hilly terrain so that may help