The new structure is significantly lighter, using aluminum extensively throughout the body, resulting in a 100 kg (220 lb) weight decrease.

[10] The car was officially unveiled on 16 December 2013 and debuted at the 2014 North American International Auto Show.

A plug-in hybrid version was introduced at the January 2015 North American International Auto Show, available in both Saloon and Estate variants.

The two cars share the same basic front-end styling treatment through to the leading edge of the doors.

Because of the absence of a B-pillar, there is also a standard automatic seatbelt feeder similar to that used by the 2014 E-Class Coupé.

[19] As part of Mercedes-Benz's efforts to establish itself at the forefront of autonomous driving technology, the 2015 C-Class Coupé also comes with an optional Distronic Plus system.

[20] The interior of the C-Class Cabriolet is almost identical to that of the coupé but includes heat-reflecting leather and a switch on the centre console to open and close the roof.

2019+ AMG models equipped with the PE had the exhaust muted significantly due to noise and emission regulations making 2018 the final year of its aggressive nature.

Mercedes offers it with two outputs: 469 hp (350 kW) and 650 N⋅m (479 lb⋅ft) of torque for the C 63 and 503 hp (375 kW) and 700 N⋅m (516 lb⋅ft) of torque for the more potent C 63 S. By moving to the downsized and turbocharged engine, Mercedes claims the W205 version consumes 32 percent less fuel than the model it replaced.

[24] The car still uses a seven-speed automatic transmission that sends power to the rear wheels and three-stage adaptive dampers specific to AMG models along with speed-sensitive variable steering.

[23] The Estate variant served as the official Medical Car of Formula One between 2015 and 2021, and has since been replaced by the Mercedes-AMG GT 4-Door Coupé.

The most obvious is the aggressive front bumper, which features larger scoops to feed more air to the car's twin-turbocharged 4.0-litre V-8 as well as to its high-performance brakes.

The grille is also unique, and the hood features some muscular ripples that the regular C-Class Coupe does not.