The Mercedes-Benz W123, produced between 1976 and 1985, represents a pivotal generation in the lineage of the Mercedes-Benz E-Class. Specifically, the 220 D Automatic, manufactured from July 1975 to March 1979, was a cornerstone of the model range, offering a blend of practicality, durability, and understated luxury. Positioned in the mid-size executive car segment, the W123 was designed to succeed the W114 and W115 models, and it quickly gained a reputation for being exceptionally well-built and reliable. The 220 D, powered by a diesel engine, was particularly popular in Europe where fuel economy and longevity were highly valued. While not initially a major seller in the United States, the W123 eventually found a dedicated following, appreciated for its robust engineering and classic styling.
The Mercedes-Benz W123 220 D: A Detailed Overview
The W123 series marked a significant step forward for Mercedes-Benz in terms of safety, comfort, and overall refinement. It was the first series to be offered with a five-speed manual transmission and featured improved crumple zones for enhanced crash protection. The 220 D variant, with its naturally aspirated diesel engine, prioritized fuel efficiency and durability over outright performance, making it a popular choice for long-distance drivers and those seeking a dependable family vehicle. The “D” designation signified its diesel powerplant, a key differentiator in the European market.
Engine & Performance
The heart of the W123 220 D is its 2.2-liter (2197 cm3 or 134.07 cu. in.) inline-four cylinder diesel engine, designated OM 615 D 22 / 615.941. This engine produces 60 horsepower (Hp) at 4200 rpm and 126 Nm (92.93 lb.-ft.) of torque at 2400 rpm. While the horsepower figure may seem modest by modern standards, the engine’s torque delivery provides adequate performance for everyday driving. The engine utilizes precombustion chamber injection, a common diesel technology of the era, to improve combustion efficiency. Power per liter is rated at 27.3 Hp/l. Acceleration from 0 to 100 km/h (0-62 mph) takes approximately 29.1 seconds, and 0 to 60 mph is achieved in around 27.6 seconds. The top speed is limited to 130 km/h (80.78 mph). The engine is longitudinally mounted at the front of the vehicle, driving the rear wheels. The weight-to-power ratio is 23 kg/Hp, and the weight-to-torque ratio is 11 kg/Nm.
Design & Features
The W123 220 D is a four-door sedan with a classic, understated design. Its body is characterized by clean lines, a relatively upright stance, and a prominent grille with the iconic Mercedes-Benz three-pointed star. The interior is functional and well-appointed, offering seating for five passengers. While not lavishly equipped by today’s standards, the 220 D provided a comfortable and refined driving experience for its time. Features included comfortable seating, a well-designed dashboard, and adequate ventilation. Safety features, while limited compared to modern vehicles, included disc brakes on all four wheels and improved body structure for crashworthiness. The car’s robust build quality and relatively simple mechanical design contributed to its legendary reliability. The vehicle’s dimensions are: Length 4725 mm (186.02 in.), Width 1786 mm (70.31 in.), and Height 1438 mm (56.61 in.). The wheelbase measures 2795 mm (110.04 in.).
Technical Specifications
| Brand | Mercedes-Benz |
| Model | W123 |
| Generation | W123 |
| Type (Engine) | 220 D (60 Hp) Automatic |
| Start of production | July, 1975 |
| End of production | March, 1979 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 9 l/100 km (26.1 US mpg, 31.4 UK mpg, 11.1 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 29.1 sec |
| Acceleration 0 – 62 mph | 29.1 sec |
| Acceleration 0 – 60 mph | 27.6 sec |
| Maximum speed | 130 km/h (80.78 mph) |
| Weight-to-power ratio | 23 kg/Hp |
| Weight-to-torque ratio | 11 kg/Nm |
| Power | 60 Hp @ 4200 rpm |
| Power per litre | 27.3 Hp/l |
| Torque | 126 Nm @ 2400 rpm (92.93 lb.-ft. @ 2400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 615 D 22 / 615.941 |
| Engine displacement | 2197 cm3 (134.07 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 87 mm (3.43 in.) |
| Piston Stroke | 92.4 mm (3.64 in.) |
| Compression ratio | 21.5:1 |
| 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 | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1380 kg (3042.38 lbs.) |
| Max. weight | 1900 kg (4188.78 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4725 mm (186.02 in.) |
| Width | 1786 mm (70.31 in.) |
| Height | 1438 mm (56.61 in.) |
| Wheelbase | 2795 mm (110.04 in.) |
| Front track | 1488 mm (58.58 in.) |
| Rear track | 1446 mm (56.93 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 4 gears, automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Trailing arm |
| Front brakes | Disc |
| Rear brakes | Disc |
| Steering type | Cone worm with recirculation balls |
| Wheel rims size | Front/Rear: 5.5J x 14 |
The Mercedes-Benz W123 220 D Automatic remains a highly sought-after classic car, appreciated for its build quality, reliability, and timeless design. Its enduring appeal is a testament to the engineering prowess of Mercedes-Benz and its commitment to producing vehicles that stand the test of time. While not a performance car, the 220 D offered a comfortable, efficient, and dependable mode of transportation that continues to resonate with enthusiasts today.
