The word coupe  is derived from the French verb couper, to cut.
In the 1800’s a coupé was a closed four-wheel horse-drawn carriage with a single seat inside for two persons. The front, rear-facing passenger seats had eliminated or cut (coupé) from the two seat, four person version of the carriage.
The driver was positioned on a box outside.
Typically, a coupé had a fixed glass window in the front of the body, with a dashboard to protect it from dirt and other road items.

As was the case with the 19th cetury carriage, a landau roof is a coupé with a folding top.In the 1950s opening-roof convertible automobiles were sometimes called convertible coupés, but since the 1960s the term coupé has been applied almost exclusively to fixed-roof models.

Coupés generally have two doors, however there have been three and four-door coupés and five-door hatchback coupés.
Modern coupés often have frameless doors, with the window glass sealing directly against a weather-strip on the main body.which distinguishes a coupé is from a two-door sedan by the lack of a “B” pillar to support the roof.

The Society of Automotive Engineers distinguishes a coupé from a sedan primarily by having a rear interior volume of less than 33 cubic feet  / 0.93 cubic meters.

Mercedes coupes are offered int the 3 “C” classes

CLK-Class
CLS-Class
CL-Class

Here are the 8 Mercedes Coupe Body styles that Mercedes offers

• CLK350
• CLK550
• CLS550
• CLS63
• CL550
• CL63 AMG
• CL600
• CL65 AMG

Click the image near the top of the page to get current prices for these Mercedes coupes.