Mercedes-Benz W112

See Mercedes-Benz S-Class for a complete overview of all S-Class models.

The Mercedes-Benz W112 is a luxury automobile produced by Mercedes-Benz from 1961 to 1967. Marketed as the 300SE, it was available as a standard sedan (its principal form), stretched sedan (Lang), and distinct coupé and convertible.

The sedan is based on the Mercedes-Benz W111 Fintail chassis and coachwork. The 300SE coupe/convertible was introduced in February 1962, and shares its more restrained and elegant Paul Bracq designed bodywork and interior with the Mercedes-Benz W111 220SE coupe/convertible. The stretched wheelbase 300SE "Lang" sedan appeared in March 1963, redesignated the 300SEL in 1964.

These high-end cars were the top of the Mercedes range until the introduction of the much larger, ultra-luxurious 600 series in 1963. They were fitted with the 3.0 litre fuel-injected M189 big-block six-cylinder engine, at the time of the model's introduction the company's largest. All were finished with a higher level of wood and leather trim than the corresponding W111, and had standard luxury features such as power steering, automatic transmission, and pneumatic self-levelling suspension, an enhancement of the former flagship Mercedes-Benz 300d Adenauer's dashboard activated mechanical torsion bar based system.