Datsun
Member
At a constant 40 mph , no wind,a topper with less drag then an open box and you might see the mileage gage hit 18 mpg. My 2113 roush modified truck runs an average around 15mpg. The stock truck rating of 13 city 16 hwy is exactly where my truck is preforming. I have 8,000 miles on it now. Considering my truck has 590hp compared to the stock 411hp I think the mileage is pretty good. It does require premium fuel however! Also is hard on rear tires,reguires frequent rotations.