The Mercedes-Benz L 312 is a two-axle truck from Mercedes-Benz that was built in Mannheim from 1953. It largely corresponds to type L 311. Because of their engine output of 90 HP (66 kW) at the beginning, both types were known as the “90er Mercedes”. Initially, the vehicle was built as a flatbed truck and a tipper truck and was called the L 4500.