on flat land near sea level going 65mph, mine will almost get 40mpg, if i go 60 it will probably do 40, i get just over 300 miles a tank just running around town in fl. now here in ut. it doesnt like mountains in 5th, and in 4th it hogs gas, up here at 6500 ft, its gutless, and you cant use 5th, but in the valley that is at 4k ft. its better but mpg is still bad, but i can run the 85 octane that they have here unless i go twards the salt lake, then i need to go up to 87 and thats ok all the way to sea level