1989-1991 Mercedes-Benz W124 (facelift ) 300 D CAT (110 Hp) 4MATIC Automatic

The Mercedes-Benz W124, produced from 1985 to 1996, represented a significant leap forward in engineering and design for the German automaker. The facelifted version introduced in 1989 refined the already successful platform, offering enhanced aesthetics and improved features. Among the variants was the 300 D CAT (Catalytic Converter) 4MATIC, a diesel-powered sedan equipped with all-wheel drive. This model, produced between September 1989 and June 1991, catered to buyers seeking a blend of fuel efficiency, robust performance, and all-weather capability. While not initially a large seller in the United States, the W124 established Mercedes-Benz as a benchmark for mid-size luxury and durability, and continues to be highly regarded by enthusiasts today.

Mercedes-Benz W124 300 D CAT 4MATIC: A Detailed Overview

The W124 series was designed as a successor to the W201 (190E) and W123 models, aiming to bridge the gap between compact and full-size Mercedes-Benz offerings. The 300 D CAT 4MATIC specifically targeted drivers who needed a practical, reliable, and comfortable vehicle capable of handling diverse road conditions. The inclusion of the 4MATIC all-wheel-drive system distinguished it from standard rear-wheel-drive W124 sedans, providing enhanced traction and stability, particularly in inclement weather. The “CAT” designation indicated the presence of a catalytic converter, a crucial component for meeting increasingly stringent emissions regulations.

Engine & Performance

The heart of the 300 D CAT 4MATIC is the OM 603 D 30 inline-six cylinder diesel engine, displacing 2.996 liters (182.83 cubic inches). This engine produced 110 horsepower at 4600 rpm and 191 Nm (140.87 lb.-ft.) of torque between 2800 and 3050 rpm. While the horsepower figure might seem modest by modern standards, the engine’s strength lay in its substantial torque output, providing strong pulling power and effortless cruising. The engine utilized precombustion chamber injection, a technology common in Mercedes-Benz diesels of the era, for efficient combustion and reduced emissions. Power is delivered to all four wheels via a four-speed automatic transmission. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 16 seconds, while the top speed was limited to 178 km/h (110.6 mph). The weight-to-power ratio of 14.3 kg/Hp and weight-to-torque ratio of 8.2 kg/Nm highlight the engine’s ability to move the vehicle effectively despite its considerable weight of 1570 kg (3461.26 lbs).

Design & Features

The W124 300 D CAT 4MATIC is a four-door sedan with a classic, understated Mercedes-Benz design. The 1989 facelift brought subtle but noticeable changes, including a revised front grille, updated headlights, and smoothed body lines. The interior was characterized by its high-quality materials, comfortable seating for five occupants, and a focus on practicality. Key features included hydraulic power steering, ventilated front disc brakes, and disc brakes on the rear axle. The 4MATIC system employed a mechanically operated clutch to engage the front wheels when rear wheel slip was detected, providing seamless all-wheel-drive operation. Safety features, while not as comprehensive as those found in modern vehicles, included an Anti-lock Braking System (ABS) which was a significant advancement for the time. The vehicle’s robust construction and attention to detail contributed to its reputation for longevity and reliability.

Technical Specifications