1967 - 1976
The Model 114 was introduced alongside the Model 115 in 1967 and was produced until 1976. This model represented advanced technology and modern design for its time, targeting the mid-upper luxury segment of the market. It was available in both sedan and coupe variants. The Model 114 was known for its gasoline six-cylinder engines, which offered higher performance and smoother operation compared to the four-cylinder variants in the Model 115. Diesel engines were not available in this series.
The model boasted advanced technological innovations. In 1969, the 250CE model introduced the fully electronic Bosch D-Jetronic fuel injection system. This was the very first production Mercedes-Benz to use this system. The W114 underwent a facelift in 1973 – featuring a lower hood line, a lower and wider radiator grille, a single front bumper replacing the double bumpers, lower headlight placement, modifications to the A-pillar to maintain the transparency of the side windows, removal of the quarter windows in the front doors, ribbed tail lights to minimize obstruction by road dirt, and larger side mirrors. The interior received retractable seat belts and a new padded steering wheel with a four-hole design.
At the same time as the 280 S, 280 SE, and 280 SL models, the "New Generation" of mid-sized cars was also introduced in January 1968. The original range of the W 114/115 series included six models, from the 200 D with a 55 hp four-cylinder diesel engine to the 250 with a 130 hp six-cylinder carburetor engine. The top model, the 250, could be distinguished from its more common siblings by its exterior; it was the only model to feature a double bumper at the front.