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 W124 platform, offering enhanced aesthetics, improved performance, and increased safety features. Among the various models within the W124 range, the 300 D 4MATIC, equipped with a 3.0-liter diesel engine and all-wheel drive, stood out as a capable and luxurious sedan. This model, produced between September 1989 and June 1991, catered to buyers seeking a robust and refined vehicle capable of handling diverse driving conditions.
The Mercedes-Benz W124 300 D 4MATIC: A Refined Sedan
The W124 series was intended as a replacement for the W201 (190E) and W123 models, offering a more modern and sophisticated package. The 1989 facelift brought subtle but important changes, including revised styling, improved aerodynamics, and updated interior appointments. The 300 D 4MATIC specifically combined the fuel efficiency and durability of a diesel engine with the added traction and stability of Mercedes-Benz’s 4MATIC all-wheel-drive system. This made it a popular choice in regions with inclement weather or challenging road conditions.
Engine & Performance
The heart of the 300 D 4MATIC is its OM 603 D 30 inline-six cylinder diesel engine, displacing 2,996 cubic centimeters (182.83 cubic inches). This naturally aspirated engine produces 113 horsepower at 4,600 rpm and 191 Newton-meters (140.87 lb.-ft.) of torque at 2,700 rpm. While not a performance-oriented vehicle, the 300 D 4MATIC offered respectable acceleration for its time, achieving 0-100 km/h (0-62 mph) in approximately 16 seconds and 0-60 mph in 15.2 seconds. Its top speed is rated at 178 km/h (110.6 mph). The engine utilizes precombustion chamber injection, a technology common in Mercedes-Benz diesels of the era, contributing to its efficiency and longevity. The engine’s power-to-weight ratio is 13.9 kg/Hp, and the torque-to-weight ratio is 8.2 kg/Nm. Fuel economy is rated at 9.9 liters per 100 kilometers (23.8 US mpg) in urban driving and 8.5 liters per 100 kilometers (27.7 US mpg) in extra-urban conditions.
Design & Features
The W124 300 D 4MATIC is a four-door sedan with a classic, understated Mercedes-Benz design. The facelifted model features a more integrated front fascia and revised taillights compared to earlier W124s. The interior is characterized by its high-quality materials, comfortable seating for five passengers, and a focus on practicality. Key features included power steering, ventilated front disc brakes, and an Anti-lock Braking System (ABS) for enhanced safety. The 4MATIC system employs a permanent all-wheel-drive configuration, with the internal combustion engine driving the rear wheels and the front wheels engaged through an electrically or mechanically operated clutch when needed. This system provides improved traction and stability, particularly on slippery surfaces. The vehicle offers 520 liters (18.36 cubic feet) of trunk space, and a 70-liter (18.49 US gallons) fuel tank. The suspension utilizes a wishbone setup at the front and an independent multi-link suspension at the rear, providing a comfortable and controlled ride.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | W124 |
| Generation | W124 (facelift 1989) |
| Type | 300 D (113 Hp) 4MATIC Automatic |
| Start of production | September, 1989 |
| End of production | June, 1991 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 9.9 l/100 km (23.8 US mpg) |
| Fuel consumption (extra urban) | 8.5 l/100 km (27.7 US mpg) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 16 sec |
| Acceleration 0 – 62 mph | 16 sec |
| Acceleration 0 – 60 mph | 15.2 sec |
| Maximum speed | 178 km/h (110.6 mph) |
| Weight-to-power ratio | 13.9 kg/Hp |
| Weight-to-torque ratio | 8.2 kg/Nm |
| Power | 113 Hp @ 4600 rpm |
| Torque | 191 Nm @ 2700 rpm (140.87 lb.-ft. @ 2700 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 603 D 30 / 603.913 |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 87 mm (3.43 in.) |
| Piston Stroke | 84 mm (3.31 in.) |
| Compression ratio | 22:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Precombustion chamber injection |
| Engine aspiration | Naturally aspirated |
| Valvetrain | SOHC |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant capacity | 9.5 l (10.04 US qt | 8.36 UK qt) |
| Kerb Weight | 1570 kg (3461.26 lbs.) |
| Max. weight | 2090 kg (4607.66 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space | 520 l (18.36 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4740 mm (186.61 in.) |
| Width | 1740 mm (68.5 in.) |
| Height | 1450 mm (57.09 in.) |
| Wheelbase | 2800 mm (110.24 in.) |
| Front track | 1497 mm (58.94 in.) |
| Rear track | 1485 mm (58.46 in.) |
| Drivetrain | All wheel drive (4×4) |
| Number of gears | 4 |
| Gearbox type | Automatic transmission |
| Front suspension | Wishbone |
| Rear suspension | Independent multi-link |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic |
| Tires size | 195/65 R15 |
| Wheel rims size | 6.5J x 15 |
The Mercedes-Benz W124 300 D 4MATIC represents a high point in German engineering, combining durability, comfort, and all-weather capability. Its robust diesel engine and sophisticated all-wheel-drive system ensured its popularity among discerning drivers seeking a reliable and refined sedan.
