Originally Posted by
freshturk
ive had my '13 fx4, quad cab, 5.5ft bed, 3.7 since april and I havnt seen anything close to the mileage you're getting. When it was stock i would average mid-15s on mixed highway/city and never really saw much of an improvement on solely highway. Now with the level and 33s, the computer tells me 13.5-14.1 mixed without the chip being reflashed to accomodate the larger tire size so in reality its prolly 0.5mpg better. Towing from Ohio to NC through the hills of WV, i averaged 10.5 with the bigger tires. Overall like everyone else has said, it tows about as good as it gets for a gasser, but unfortunately i have not seen the mpg that others have posted. I drive like a grandma too.