I drive a 94 Civic. 1.6L 4 banger. In winter, it gets about 32mpg cruising 75-80mph. Most of the rest of the year it gets 36mpg at the same speed. I was fortunate to "keep" an 05 Z51 package Corvette for about a year. Cruising on the highway at 80mph, it consistently got 30mpg. Pretty amazing for a 400hp performance car.