Carlsson is considered as one of the best Mercedes tuning companies in the world and when customer calls to have their Mercs customized, they answer with some of the most comprehensive programs on the market.Recently, Carlsson received a client request to build a program for the Mercedes CLS-Class (C218) and they went to work to provide a comprehensive special aerodynamic and performance package based on one of their recently-released programs.To ensure that the CLS keeps an agile appearance, Carlsson added a new carbon front spoiler and lip spoiler, as well as black steel grille inserts, on the front of the car. At the rear, the German tuning company went out and dropped a rear spoiler and a rear apron insert with a carbon fiber Carlsson RS rear diffuser, providing that extra downforce to create a more stable driving experience of the car. The package was completed by a new set of 20” Carlsson Design alloy wheels.Inside, Carlsson’s reputation for excellent craftsmanship was in full display. The German tuner took the interior of this luxury sedan and dressed it up with most luxurious of materials, including leather, Alcantara, carbon fiber, and natural wood. The front seats of the car were re-upholstered with Carlsson’s very own Nappa Exclusive leather while the rest of the interior was given velour floor mats with the Carlsson logo, scuff plates with blue illuminated Carlsson logo, and polished aluminium door locking pins.This unique one-off Carlsson-tuned CLS-Class was given the same engine set-up as the Mercedes CK63 RS, a model Carlsson introduced at the 2011 Frankfurt Auto Show. Just like that model, this one comes with an engine improvement of up to 649 horsepower and 663 lb/ft of torque, allowing the car to improve its 0-62 mph time from 4.3 seconds to 4.1 seconds.