The lovely Vicki Butler Henderson, of Fifth Gear, lets the track decides on who deserves the mid-size luxury coupe title, the all wheel drive Audi S5 or the rear wheel drive BMW 335i. The BMW's 3 series is the perennial favorite for the class as such it's a big target which Audi takes aim at with the new S5. Let's see who wins. Audi S5 BMW 335i Engine Type V8 inline 6 Displacement 4.2 liters 3.0 liters Compressor naturally aspirated twin turbocharger Horsepower 354 hp @ 6800 rpm 300 hp @ 5800 rpm Torque 325 ft-lbs. @ 3500 rpm 300 ft-lbs. @ 1400 rpm Driven Wheels all wheel drive rear wheel drive limited slip differential standard not available Weight 3792 lbs 3571 lbs M.S.R.P $50,500 $40,800 Fuel Economy 22.8 mpg 28.6 mpg