Mercedes Benz C-55 395 hp and 380 pound of torque 530 NM with Kleemann modified exhaust system beats Porsche Panamera 4s in Autodromo Hermanos Rodriguez. And speed there is, aplenty. The C55 holsters a 5.5-liter V8. The heavily modified powerplant generates a staggering 395hp, accompanied by an equally epic 380ft.-lbs. of torque at 4000rpms. Translation: AMG's mini-Merc is never, ever short of grunt. Grunt as in shove. Shove as in The Hand of God smacking you in the ass and sending you on your merry way.