The Mercedes-Benz W128 Sedan, specifically the 220 SE model, represents a pivotal point in the evolution of post-war Mercedes-Benz design and engineering. Produced between April 1958 and August 1959, this vehicle, often referred to as the “Ponton” due to its pontoon-like, integrated body style, marked a significant departure from the earlier, more traditionally styled Mercedes-Benz automobiles. The 220 SE was positioned as a luxury sedan, aimed at a discerning clientele seeking comfort, reliability, and a degree of prestige. It served as a bridge between the earlier W180 “Ponton” series and the more technologically advanced “Fintail” models that would follow.
The Mercedes-Benz W128 Sedan 220 SE
The W128 series, and the 220 SE within it, was primarily a European market vehicle. While not widely exported to the United States in significant numbers during its production run, it established Mercedes-Benz’s reputation for quality and engineering excellence in a rapidly recovering post-war Europe. The “SE” designation signified “Sonderausführung” (Special Equipment), indicating a higher level of trim and features compared to the standard models. The 220 SE offered a refined driving experience and represented a step up in performance and sophistication within the Ponton range.
Engine & Performance
The heart of the 220 SE is its 2.2-liter (2195 cm3 or 133.95 cu. in.) inline-six cylinder engine, designated the M127 I / 127.980. This engine produced 115 horsepower at 4800 rpm and 186 Nm (137.19 lb.-ft.) of torque at 3800 rpm. While not a powerhouse by modern standards, the engine delivered smooth and refined power delivery, characteristic of Mercedes-Benz engineering of the period. The engine featured multi-port manifold fuel injection, a relatively advanced technology for the late 1950s, contributing to improved fuel efficiency and performance. The power-to-weight ratio of 11.7 kg/Hp (85.5 Hp/tonne) and torque-to-weight ratio of 7.2 kg/Nm (138.3 Nm/tonne) provided adequate, if not exhilarating, performance for the time. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 15 seconds, and 0 to 60 mph was achieved in around 14.3 seconds. The top speed was rated at 160 km/h (99.42 mph). Fuel consumption was rated at 10.7 l/100 km (22 US mpg / 26.4 UK mpg / 9.3 km/l).
Design & Features
The W128 Sedan’s design was revolutionary for its time. The “Ponton” styling, with its fully integrated body and lack of separate, protruding fenders, offered a sleek and modern appearance. This contrasted sharply with the more traditional designs of its predecessors. The four-door sedan body style provided comfortable seating for five passengers. The interior was appointed with high-quality materials, reflecting the car’s luxury positioning. Features included a spacious cabin, comfortable seating, and a well-appointed dashboard. Safety features, while limited by the standards of the era, included robust construction and reliable braking systems. The suspension system utilized a double wishbone setup with a transverse stabilizer at the front and a trailing arm arrangement at the rear, providing a comfortable ride. Braking was handled by drum brakes on all four wheels. The steering system employed a cone worm with recirculation balls, offering precise control. The 62-liter (16.38 US gal / 13.64 UK gal) fuel tank provided a reasonable driving range.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | Ponton |
| Generation | W128 Sedan |
| Type (Engine) | 220 SE (115 Hp) |
| Start of production | April, 1958 |
| End of production | August, 1959 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 10.7 l/100 km |
| Fuel consumption (US mpg) | 22 US mpg |
| Fuel consumption (UK mpg) | 26.4 UK mpg |
| Fuel consumption (km/l) | 9.3 km/l |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 15 sec |
| Acceleration 0 – 62 mph | 15 sec |
| Acceleration 0 – 60 mph | 14.3 sec |
| Maximum speed | 160 km/h |
| Maximum speed (mph) | 99.42 mph |
| Weight-to-power ratio | 11.7 kg/Hp |
| Weight-to-torque ratio | 7.2 kg/Nm |
| Power | 115 Hp @ 4800 rpm |
| Power per litre | 52.4 Hp/l |
| Torque | 186 Nm @ 3800 rpm |
| Torque (lb.-ft.) | 137.19 lb.-ft. @ 3800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 127 I / 127.980 |
| Engine displacement | 2195 cm3 |
| Engine displacement (cu. in.) | 133.95 cu. in. |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 80 mm |
| Cylinder Bore (in.) | 3.15 in. |
| Piston Stroke | 72.8 mm |
| Piston Stroke (in.) | 2.87 in. |
| Compression ratio | 8.7:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Kerb Weight | 1345 kg |
| Kerb Weight (lbs.) | 2965.22 lbs. |
| Max. weight | 1810 kg |
| Max. weight (lbs.) | 3990.37 lbs. |
| Max load | 465 kg |
| Max load (lbs.) | 1025.15 lbs. |
| Fuel tank capacity | 62 l |
| Fuel tank capacity (US gal) | 16.38 US gal |
| Fuel tank capacity (UK gal) | 13.64 UK gal |
| Length | 4750 mm |
| Length (in.) | 187.01 in. |
| Width | 1740 mm |
| Width (in.) | 68.5 in. |
| Height | 1560 mm |
| Height (in.) | 61.42 in. |
| Wheelbase | 2820 mm |
| Wheelbase (in.) | 111.02 in. |
| Front track | 1430 mm |
| Front track (in.) | 56.3 in. |
| Rear track | 1470 mm |
| Rear track (in.) | 57.87 in. |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 4 |
| Type of gearbox | manual transmission |
| Front suspension | Double wishbone, Transverse stabilizer |
| Rear suspension | Trailing arm |
| Front brakes | Drum |
| Rear brakes | Drum |
| Steering type | Cone worm with recirculation balls |
The Mercedes-Benz W128 Sedan 220 SE remains a significant vehicle in the company’s history, representing a period of innovation and refinement. Its elegant design, robust engineering, and comfortable driving experience cemented Mercedes-Benz’s position as a leading manufacturer of luxury automobiles.
