Went down to VA from CT a few months back and was surprised to get 28 mpg on the way back home with my 1990 90q20v with 135,000 miles on the odometer. Was pretty much going as fast as I could get away with for most of the trip. If I can remember correctly that was about 75 to 85 mph. Hank 90q20v much better on gas then my Suburban with 36 inch mud tires.