BMW Coupé

Coupé (French) or coupe (English) is a car body shapes which generally has 2 doors. There is no standard definition for this form because each manufacturer has their own definition and evolve over time. Cars are often a variation of a sports coupe from a sedan saloon with the inside containing only two seats or 2 +2 seats (two in front and two behind). Generally coupe has two doors, but some manufactures to create a new classification such as the sedan coupe 4-door coupe, which resembles a sedan with a coupe body.

History of the BMW Coupe 

In the 19th century, the coupe is a closed four-wheel horse-drawn carriages were cut (coupé) to eliminate the facing front seat to the back, leaving a place for two people to sit behind the driver. Landau is a coupe with a retractable roof. 

BMW M3 Coupé

During the 1950s open-topped car is sometimes called convertible coupé, but in the 1960s the term coupe is generally used for closed-topped cars. Generally, two-door coupe, although there is also a four-door, three-, and five-hatchback. 

SAE differentiate the coupe from the sedan usual, especially through the volume of space inside. SAE standard J1100 defines a coupe of the car roof with a volume of space in the back of less than 0.93 Meters3. Cars with more volume than it is technically called a two-door sedan, not a coupe, although only two doors. However, some manufacturers still use the term coupe for cars like this, for example: Cadillac Coupe de Ville.