Mercedes C55 AMG equiped with Kleeman exhaust direct system beats 335i Coupe at Autodromo Hermanos Rodríguez in Mexico City. LOTS of opposite lock. Despite its enormous accelerative abilities and diminutive footprint, the Mercedes C55 is no track-honed BMW M3. It's a muscle car writ small. The C55's rack-and-pinion steering system offers a leisurely 3.3 turns from lock-to-lock. The fact that you can have any gearbox you like so long as it's an automatic confirms the car's "horsepower uber alles" bias.