2014 BMW M5 vs 2014 Mercedes-Benz E63 AMG S
These two mighty Germans produce 1152 horsepower and 1092 pound-feet of torque. On paper. After a day of horsing around/testing Shaffer and Lieberman grow suspicious of each twin-turbo V-8's actual output. So, they take them to the dyno gurus at K&N engineering to learn what's what. The results very well may shock and amaze you. However, the boys come to the conclusion that numbers are only exactly that: only numbers, and numbers only matter so much. One true test of a super sedan is how it handles a twisting stretch of tarmac. The other is how much you yearn for the car after you've walked away from it. How much the keys itch in your pocket.