I've always thought i got about about 16mpg. So i filled up the other day to drive up to the track, following a built z28 and a built TA up there doin the speed limit wasnt an option we were running about 80 - 85 most the way which is about 98 miles. Then we race all day i make 8 or 9 passes, then drive home, figured up my mpg and i averaged 16.5, so now im curious what i could get if i just drove the speed limit and no racing, prolly close to 18 or better. Idk i just thought 16.5 was good after everything i was doing.