The CLS undeniably helped make the body style popular but its designers had an eye on a classic British car that was nearly forgotten by the turn of the 21st century. Rover launched the first car marketed as a four-door coupe in 1962 and it fine-tuned the body style for decades before Mercedes caught on.

From Rover’s original idea to Porsche’s newest SUV, join us for a look at how the controversial four-door coupe segment has evolved since the 1960s.

Current Mercedes-Benz CLS-Class pictured.