1968-1971 Mercedes-Benz SL (W113) 280 SL (170 Hp) Automatic

The Mercedes-Benz W113, commonly known as the “Pagoda SL,” represents a pivotal era in the evolution of the iconic SL (Sport Leicht) roadster lineage. Produced between 1963 and 1971, the W113 series offered a blend of sophisticated styling, robust engineering, and comfortable grand touring capabilities. The 280 SL, introduced in January 1968 and continuing through March 1971, marked the final and most refined iteration of the W113. This variant, equipped with a 2.8-liter inline-six engine and an automatic transmission, occupied the premium position within the Pagoda SL range, offering a more relaxed driving experience compared to its manual transmission counterparts.

The 280 SL Automatic: Positioning and Overview

The 280 SL Automatic was the top-of-the-line Pagoda SL, replacing the earlier 250 SL and 230 SL models. It was designed for buyers who prioritized comfort and ease of use over outright sporting performance. While the manual transmission versions appealed to enthusiasts, the automatic catered to a clientele seeking a luxurious and refined open-air touring experience. The 280 SL represented a significant upgrade in power and refinement over its predecessors, solidifying the W113’s reputation as a desirable classic.

Powertrain & Engine Architecture

The heart of the 280 SL is the M 130.983 engine, a 2,778 cc (169.52 cubic inches) inline-six cylinder powerplant. This engine featured a cast iron block and an aluminum cylinder head, a common configuration for Mercedes-Benz engines of the period. It utilized Bosch multi-port fuel injection, a relatively advanced system for its time, contributing to improved fuel efficiency and smoother operation. The engine produced 170 horsepower at 5,750 rpm and 240 Nm (177.01 lb-ft) of torque at 4,500 rpm. The engine’s single overhead camshaft (SOHC) valvetrain operated two valves per cylinder.

The automatic transmission paired with the M 130.983 engine was a four-speed unit, providing smooth and effortless gear changes. This transmission was specifically chosen to complement the engine’s torque characteristics and deliver a comfortable driving experience. While not known for its blistering acceleration, the automatic transmission allowed for relaxed cruising and simplified operation in city traffic. The transmission’s gear ratios were optimized for both highway cruising and moderate acceleration, prioritizing comfort over outright performance.

Driving Characteristics

The 280 SL Automatic offered a distinctly different driving experience compared to the manual transmission versions. The automatic transmission smoothed out the power delivery, making the car more accessible to a wider range of drivers. Acceleration from 0 to 60 mph was achieved in approximately 8.6 seconds, and 0-100 km/h in 9 seconds, figures respectable for a grand tourer of the era, but noticeably slower than the manual variants. The automatic transmission did result in some power loss compared to the manual, but the trade-off was a more relaxed and refined driving experience. The car felt composed and stable at highway speeds, making it an excellent choice for long-distance journeys. The steering, while not overly responsive, provided adequate feedback, and the suspension offered a comfortable ride, absorbing bumps and imperfections in the road surface effectively.

Equipment & Trim Levels

The 280 SL Automatic came standard with a generous array of features for its time. Standard equipment included leather upholstery, a wood-trimmed dashboard, and power-assisted steering. The interior was well-appointed and offered a comfortable and luxurious environment for both driver and passenger. Optional extras included air conditioning, a radio, and a hardtop in addition to the standard soft top. The hardtop, a signature feature of the Pagoda SL, provided increased security and weather protection. Interior color options were varied, allowing buyers to personalize their vehicles. The 280 SL Automatic was generally finished with higher-quality materials and more refined detailing than the earlier 230 SL and 250 SL models.

Chassis & Braking

The W113 chassis featured independent suspension all around, with coil springs, double wishbones at the front, and a coil spring rear suspension. A transverse stabilizer bar was fitted at the front to reduce body roll during cornering. The braking system consisted of disc brakes on all four wheels, providing ample stopping power. The steering system was a cone worm with recirculation balls, offering a balance between precision and ease of use. The 280 SL Automatic weighed approximately 1,360 kg (2,998.29 lbs), and the suspension was tuned to provide a comfortable ride while maintaining good handling characteristics. The tires were typically 185 HR 14, mounted on 6 J x 14 HB wheel rims.

Market Reception & Comparison

The 280 SL Automatic was well-received by automotive critics and buyers alike. It was praised for its comfortable ride, refined interior, and powerful engine. While some critics noted the slightly slower acceleration compared to the manual transmission versions, the majority acknowledged that the automatic transmission enhanced the car’s overall appeal as a grand tourer. Compared to the 250 SL and 230 SL, the 280 SL offered a significant increase in power and refinement. Fuel economy was rated at 11.4 l/100 km (20.6 US mpg, 24.8 UK mpg, 8.8 km/l), which was typical for a vehicle of its size and performance in the late 1960s. The 280 SL Automatic generally proved to be a reliable vehicle, although maintenance costs could be relatively high due to the complexity of the fuel injection system and the age of the components.

Technical Specifications

Legacy

The 280 SL Automatic remains a highly sought-after classic car today. Its combination of elegant styling, robust engineering, and comfortable driving experience has ensured its enduring appeal. While the fuel injection system can require specialized maintenance, the M 130.983 engine is generally considered to be a durable and reliable powerplant. The automatic transmission, while not as sporty as the manual, adds to the car’s overall usability and appeal. Values for well-maintained 280 SL Automatics have steadily increased in recent years, reflecting their status as a desirable and collectible classic. The W113 series, and the 280 SL Automatic in particular, represents a high point in Mercedes-Benz engineering and design, and continues to be enjoyed by enthusiasts around the world.