![1991 Mercedes-Benz 350 SDL Turbo Diesel V126 (Automatic / 4 Gears) RWD [1985-1992]](https://i0.wp.com/i0.wp.com/autogalactic.al/wp-content/uploads/2026/01/abc-rec10176-1_1.jpg?fit=2000%2C1333&ssl=1&resize=360,270)
The 1991 Mercedes-Benz 350 SDL Turbo Diesel for the North American market represents the pinnacle of diesel technology for the W126 series, combining efficiency with luxury and extended chassis (SEL). This model is powered by the 3.5-liter OM603 in-line six-cylinder engine and turbocharging, which was introduced to offer more torque ( 310 Nm ) compared to previous 3-liter versions. With a wheelbase of 3075 mm , the 350 SDL offers a royal space for rear passengers, while US-spec bumpers extend the vehicle to a total of 5286 mm . As a long-haul cruiser, this model stands out for its unmatched comfort and fuel economy, remaining one of the most prestigious diesel limousines Mercedes-Benz has sold in the US.