Not bad at all for a HD offroad truck on 35's....I think most Tacomas would get the same with the oversize tires + topper.I just got back from Moab and my average for complete trip which included off roading was 14.5 mpg hand figured. The stretch from Pocatello to Moab was 18mpg. This with 35's and topper. Going I filled in Missoula, Pocatello and again in Moab and coming back same just in reverse. 758 miles one way. Not the greatest but not terrible either.