The Mercedes-Benz SL-Class (formerly known as the SL Roadster prior to 1994) is a grand touring roadster manufactured by Mercedes since 1954. The designation SL derives from the German Sportlich-Leicht, (English: Sport Lightweight) and was first applied to the 300 SL, often referred to as the "Gullwing" due to its gullwing or upward-opening doors.
The term SL refers to the marketing variations of the vehicle, including the numerous engine configurations spanning six design generations.
The 300 SL was introduced in 1954 in coupé form, featuring gullwing doors. The 300 SL roadster succeeded the coupé in 1957. The four-cylinder 190 SL was more widely produced with 25,881 units, starting in 1955. Cars of the open SL-Class were available as a coupe with a removable hardtop or as a roadster with convertible soft top or with both tops. Production for the 190 SL and 300 SL ended in 1963.