The Mercedes-Benz CLS is an executive-size sedan originally launched in 2004 and based on the W211

Mercedes-Benz W211

The Mercedes-Benz W211 is a mid-size luxury car–executive car which was produced by the German automaker Mercedes-Benz from 2002 to 2009, under the E-Class model names. The W211 models replaced the W210 E-Class models and were superseded by the Mercedes-Benz W212 in 2009...

 E-Class

Mercedes-Benz E-Class

The Mercedes-Benz E-Class is a range of executive-size cars manufactured by Mercedes-Benz in various engine and body configurations. The E initially stood for Einspritzmotor, ; a new feature in volume production vehicles at the time that the E-Class first appeared, with the E as a suffix to the...

 platform and was internally designated as the C219. The second generation CLS-Class was introduced in September 2010 and production started in the beginning of 2011.
The CLS marked Mercedes-Benz's return to the executive-size

Executive car

Executive car is a British term that refers to a car's size and is used to describe an automobile larger than a large family car. In official use, the term is adopted by EuroNCAP, a European organisation founded to test car safety.- History :...

 coupe market since the (W124) E-Class Coupe (a two-door sedan) went out of production in 1995.