Rolf Schlepp, chief designer for the Carlsson tuning company, accentuates the coupe styling of the Mercedes CLS with a new aerodynamic package. The kit includes stainless-steel grille inserts, rear apron boasting an integrated diffuser, front spoiler, and RS front spoiler lip, the last available optionally in carbon fiber. Power boosting kits are available from Carlsson for many different CLS engines; one boosts the CLS 63 AMG twin-turbo V8 from the standard 557 PS to as much as 600 PS. The CLS 350 CDI’s power rating is boosted by as much as 20 percent by the Carlsson C-Tronic control unit, bringing it up to 780 Nm and 320 PS, an increase of 130 Nm and 55 PS over the standard model. The sprint time of the Mercedes CLS has been improved from the standard by a full 0.3 seconds, resulting in zero to one hundred kilometers an hour in only 5.9 seconds.