The Mercedes-Benz S124 (facelift 1989) 300 TD (113 Hp) Automatic: A Pillar of German Engineering
The Mercedes-Benz W124 series, produced from 1984 to 1996, stands as a monumental achievement in automotive engineering, renowned for its exceptional build quality, durability, and understated elegance. Among its various iterations, the S124 station wagon (or “estate” as it’s known in Europe) holds a special place, offering unparalleled practicality without compromising the W124’s legendary robustness. The subject of this article, the Mercedes-Benz S124 (facelift 1989) 300 TD (113 Hp) Automatic, represents a key period in the model’s lifecycle, incorporating updates that refined its aesthetics and functionality.
Launched in September 1989, this particular variant emerged as part of the W124’s significant facelift. While the W124 sedan (W124) was the volume seller, the S124 wagon carved out a niche as a premium, versatile family hauler and professional transport vehicle, particularly dominant in the European market. Known for its cavernous cargo space, comfortable ride, and sophisticated engineering, the S124 300 TD Automatic combined Mercedes-Benz’s commitment to quality with the efficiency and longevity of its diesel powertrains. This model, equipped with a naturally aspirated 3.0-liter inline-six diesel engine and a smooth automatic transmission, epitomized the brand’s philosophy of delivering durable, reliable, and comfortable transportation for the discerning buyer.
Engine and Performance of the Mercedes-Benz S124 (facelift 1989) 300 TD
At the heart of the Mercedes-Benz S124 (facelift 1989) 300 TD (113 Hp) Automatic lies the venerable OM 603 D 30 / 603.912 engine, a naturally aspirated 3.0-liter inline-six diesel unit. This engine, known for its unwavering reliability and smooth operation, produced 113 horsepower at 4600 rpm. While 113 horsepower might seem modest by today’s standards, especially for a 3.0-liter engine, it was perfectly adequate for the car’s intended purpose: comfortable, economical long-distance cruising and robust utility.
The engine’s torque output was a more impressive 191 Nm (140.87 lb.-ft.) available between 2800 and 3050 rpm. This broad torque band, characteristic of diesel engines, provided ample pulling power, crucial for a vehicle of its size and potential load capacity. The power delivery was smooth and consistent, making for a relaxed driving experience. The engine utilized a precombustion chamber injection system, a common diesel technology of the era, contributing to its renowned durability and fuel efficiency.
Power was transmitted to the rear wheels via a 4-speed automatic transmission. This gearbox was engineered for seamless shifts and robust longevity, perfectly complementing the engine’s character. While not designed for outright speed, the powertrain offered commendable fuel economy for its time, with an urban consumption of 25 US mpg and an extra-urban figure of 35.1 US mpg. Acceleration from 0 to 60 mph was achieved in a leisurely 14.5 seconds, with a top speed of 108.74 mph, emphasizing its role as a comfortable cruiser rather than a performance machine. The rear-wheel-drive architecture ensured balanced handling and the classic Mercedes-Benz driving feel.
Design and Features
The Mercedes-Benz S124 (facelift 1989) 300 TD retained the timeless, elegant, and functional design language of the W124 series. As a station wagon, the S124 body type offered exceptional practicality. The facelift introduced subtle but effective changes, often including updated body cladding (the “Sacco boards”), revised bumpers, and other minor exterior enhancements that modernized its appearance without altering its fundamental character. The five-door configuration provided easy access to both passenger and cargo areas, and with five seats, it comfortably accommodated families.
Inside, the S124 was a testament to Mercedes-Benz’s commitment to ergonomic design and high-quality materials. The cabin was spacious, with excellent visibility and controls that were intuitive and built to last. For its era, the S124 offered a respectable level of comfort and convenience features. Standard equipment typically included power steering with a hydraulic system, and the car was equipped with ABS (Anti-lock Braking System) as a crucial safety feature, enhancing stopping performance particularly in challenging conditions.
The suspension system was engineered for a refined ride and stable handling. The front utilized a wishbone setup, while the rear featured an independent multi-link suspension. This sophisticated arrangement contributed significantly to the W124’s reputation for superior ride comfort and road holding, even when fully loaded. Braking was handled by disc brakes on both the front and rear axles, providing confident stopping power. The car rode on 195/65 R15 tires mounted on 6.5J x 15 wheel rims, a sensible setup balancing comfort, grip, and durability.
Technical Specifications
| Category | Specification |
|---|---|
| General Information | |
| Brand | Mercedes-Benz |
| Model | W124 |
| Generation | S124 (facelift 1989) |
| Type (Engine) | 300 TD (113 Hp) Automatic |
| Start of Production | September, 1989 |
| End of Production | August, 1993 |
| Powertrain Architecture | Internal Combustion Engine |
| Body Type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Performance Specs | |
| Fuel Consumption (Urban) | 9.4 l/100 km (25 US mpg) |
| Fuel Consumption (Extra Urban) | 6.7 l/100 km (35.1 US mpg) |
| Fuel Type | Diesel |
| Acceleration 0 – 60 mph | 14.5 sec |
| Acceleration 0 – 62 mph (0 – 100 km/h) | 15.3 sec |
| Maximum Speed | 175 km/h (108.74 mph) |
| Weight-to-Power Ratio | 13.7 kg/Hp (72.9 Hp/tonne) |
| Weight-to-Torque Ratio | 8.1 kg/Nm (123.2 Nm/tonne) |
| Engine Specs | |
| Power | 113 Hp @ 4600 rpm |
| Power per Liter | 37.7 Hp/l |
| Torque | 191 Nm (140.87 lb.-ft.) @ 2800-3050 rpm |
| Engine Layout | Front, Longitudinal |
| Engine Model/Code | OM 603 D 30 / 603.912 |
| 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 engine |
| Valvetrain | SOHC |
| Engine Oil Capacity | 7.5 l (7.93 US qt) |
| Engine Oil Specification | Not specified in data |
| Space, Volume and Weights | |
| Kerb Weight | 1550 kg (3417.17 lbs) |
| Max. Weight (GVWR) | 2170 kg (4784.03 lbs) |
| Max Load | 620 kg (1366.87 lbs) |
| Fuel Tank Capacity | 72 l (19.02 US gal) |
| Dimensions | |
| Length | 4765 mm (187.6 in.) |
| Width | 1740 mm (68.5 in.) |
| Height | 1489 mm (58.62 in.) |
| Wheelbase | 2800 mm (110.24 in.) |
| Front Track | 1497 mm (58.94 in.) |
| Rear Track | 1497 mm (58.94 in.) |
| Drivetrain, Brakes and Suspension Specs | |
| Drivetrain Architecture | Rear-wheel drive |
| Drive Wheel | Rear wheel drive |
| Number of Gears and Type of Gearbox | 4 gears, automatic transmission |
| Front Suspension | Wishbone |
| Rear Suspension | Independent multi-link suspension |
| Front Brakes | Disc |
| Rear Brakes | Disc |
| Assisting Systems | ABS (Anti-lock braking system) |
| Steering Type | Cone worm with recirculation balls |
| Power Steering | Hydraulic Steering |
| Front Wheel Tires | 195/65 R15 |
| Rear Wheel Tires | 195/65 R15 |
| Front Wheel Rims | 6.5J x 15 |
| Rear Wheel Rims | 6.5J x 15 |
Legacy and Market Impact
The Mercedes-Benz W124 series, and particularly its S124 wagon variant, left an indelible mark on the automotive landscape, especially in Europe. The Mercedes-Benz S124 (facelift 1989) 300 TD (113 Hp) Automatic was a prime example of the brand’s reputation for “over-engineering.” These vehicles were built to an incredibly high standard, with components designed to last far beyond typical automotive lifespans. This commitment to durability translated into a strong reputation for reliability, making the W124 a coveted choice for taxi fleets, long-distance commuters, and families who valued longevity and low running costs.
In its primary European market, the S124 300 TD competed with other premium executive wagons such as the BMW 5-Series Touring (E34 generation) and the Audi 100 Avant (C3/C4 generations). While BMW focused more on sporty driving dynamics and Audi on its Quattro all-wheel-drive system, the Mercedes-Benz S124 distinguished itself through its unparalleled ride comfort, robust build quality, and superior cargo capacity. Its diesel engine, while not the most powerful, offered excellent fuel efficiency and a reputation for being virtually indestructible, factors that were highly valued by European consumers.
The S124 wagon’s historical significance lies in its role as a benchmark for practical luxury. It proved that a utilitarian body style could still exude prestige and offer a premium driving experience. Its impact extended beyond mere sales figures; it cemented Mercedes-Benz’s image as a manufacturer of high-quality, dependable vehicles that were a wise, long-term investment. Even decades after its production ceased, the W124 series, and especially the S124, commands a loyal following among enthusiasts and practical drivers alike. Many examples are still on the road today, a testament to their inherent quality and the enduring appeal of their classic design and mechanical integrity. The 300 TD variant, with its robust diesel powertrain, remains particularly sought after for its combination of efficiency, reliability, and the classic Mercedes-Benz driving experience.


