http://blogs.insideline.com/roadtests/2009/11/big-list-of-fuel-economy-october-2009.html The BMW m3 gets 20.7 best, 10.8 worst with a 17.3 average And thats with its "high tech smaller capacity engine" which is fucking expensive to build and delivers lower numbers than a LS3. The cheap to make and buy Camaro ss does 23.1 best, 13.1 worsst and a 17.3 average, exactly the same average as the BMW m3 worth over twice as much, and the Pontiac G8 is averaging 18 with a 24 best. The other imports, the 370Z, averaging 18.4 from its NVH nightmare v6 in a much lighter bodyshell and the anemic Audi S5 with its powerless and torqueless wonder 4.2L engine averages 16.2, even the charger R/T gets 16.6, and chrysler make about the worst cars in the world. The MazdaSpeed 3 and Evo X average 20.1 and 17 respectively, the Evo is even worse than the v8's, from a little 4 cylinder and the Mazda is a light car and hardly offers comparable performance. so in reality, the cheap, "old technology" pushrod LS engines, are using less fuel, while being cheaper to build and maintain AND provide more power and a better torque curve in heavier vehicles. Nice going rest of the world.