The Mercedes-Benz CLS (initially called the CLS-Class) is a series of executive cars produced by Mercedes-Benz since 2004. The original model was a four-door fastback sedan based on the E-Class platform, marketed as a four door coupé. An estate (Shooting Brake) model was later added to the model range with the second generation CLS. All models are available as a high performance AMG variant, although it wasn't until the second generation CLS that 4MATIC all-wheel drive was offered. The CLS range is positioned between the E-Class and the S-Class within the Mercedes model range, and models tend to be less practical than the E-Class it is based on. It primarily competes with other fastback sedans like the BMW 8 Series Gran Coupe, Porsche Panamera and Audi A7. From Wikipedia