my wife's 01 gets between 325 to 350 per tank. 4.0 auto 235/75R-15 tires. This jeep runs the best of all 5 in the family. It also has Bosch 4 hole injectors. Stainless exhaust with Borla ss muffler and a ss cat. no lift

On my most recent road trip I kept meticulous mileage data using two separate GPS systems (TomTom Live and Magellan Platinum). Over 2122.29 miles, the two GPS varied by just .31 miles. Total fuel used was 127.871 gallons so I averaged 16.597 mpg. There were a lot of hills and stuff

My best fill-up was 15.404 gallons after 297.64 miles so 19.32 mpg
My worst was 13.399 after just 194.91 miles, 14.55 mpg

Between home and university, almost entirely highway driving, some two-lane (ranging from 45 to 70 mph). I will refill the tank at approximately 19.2 Gallons and have traveled a distance of right about 360 miles. Average mpg estimate usually in the mid 18 range. I have not recalculated since the new suspension was installed (1.5" because it was cheaper than buying just the leaf springs from the dealership).