Description
The Mercedes-Benz 350 SLC AT was the automatic-transmission version of the V8-powered SLC coupé and represented one of the most refined expressions of Mercedes-Benz grand touring in the 1970s. Based on the extended R107 platform, the 350 SLC AT combined smooth V8 performance, a fixed-roof body and increased practicality, positioning it firmly as a luxury long-distance car rather than a sporting coupé.
Power came from a 3.5-litre V8 petrol engine producing around 200 horsepower in European specification. The engine was tuned for smoothness, durability and strong low- and mid-range torque rather than high-revving performance. Paired with a three-speed automatic transmission, the drivetrain delivered seamless, unhurried acceleration and excellent cruising ability. This combination defined the character of the 350 SLC AT, making it particularly well suited to relaxed motorway driving and urban use.
The chassis was an extended version of the SL roadster platform, featuring a longer wheelbase and a fixed roof structure. This increased rigidity and allowed for occasional rear seating, adding practicality without compromising refinement. Safety was a core design focus, with a rigid passenger cell and front and rear crumple zones providing advanced protection for the era. Suspension consisted of double wishbones at the front and a semi-trailing arm independent rear suspension, delivering predictable handling and a stable, composed ride. Disc brakes were fitted on all four wheels, providing consistent and reliable stopping power.
Styling of the Mercedes-Benz 350 SLC AT was elegant and restrained, with a longer roofline and distinctive rear quarter windows that set it apart from the open SL. The fixed-roof design gave the car a more formal and substantial appearance, reinforcing its identity as a luxury coupé. Clean lines, frameless doors and subtle chrome detailing contributed to a timeless, dignified presence.
Inside, the cabin reflected Mercedes-Benz’s emphasis on comfort, safety and long-term durability. The extended body allowed for rear seating suitable for occasional use, while front seats were wide and supportive, ideal for long journeys. The dashboard featured impact-absorbing materials, clear instrumentation and logically arranged controls. Interior materials prioritised quality and robustness, creating a calm and reassuring environment.
On the road, the Mercedes-Benz 350 SLC AT delivered a smooth and confidence-inspiring driving experience. The V8 engine was quiet at cruising speeds, the automatic transmission shifted unobtrusively, and the suspension absorbed poor road surfaces with ease. Steering was light and deliberate, encouraging relaxed progress rather than aggressive driving. The car excelled on long-distance journeys, where comfort, stability and refinement were paramount.
The automatic transmission made the 350 SLC especially appealing to buyers who valued ease of use and effortless performance. It was particularly well suited to export markets, where automatic gearboxes and luxury-focused driving characteristics were strongly preferred.
Today, the Mercedes-Benz 350 SLC AT is regarded as a distinctive and understated classic. Valued for its smooth V8 drivetrain, elegant coupé styling and robust engineering, it represents a unique chapter in the SL and SLC lineage. As a classic grand tourer, it offers a compelling blend of comfort, presence and durability, capturing Mercedes-Benz’s 1970s philosophy of refined, long-distance motoring.