The Mercedes-Benz W128 Coupe 220 SE represents a pivotal moment in post-war Mercedes-Benz design and engineering. Produced between August 1959 and November 1960, this elegant coupe was part of the “Ponton” series, known for its unibody construction – a significant departure from the traditional body-on-frame designs of the era. The 220 SE, positioned in the luxury car segment, offered a blend of sophisticated styling, robust engineering, and a relatively modern powertrain for its time. While not a high-volume seller compared to the sedan variants, the W128 Coupe 220 SE remains a highly sought-after classic, embodying the understated elegance and build quality that defined Mercedes-Benz in the late 1950s and early 1960s.
The Mercedes-Benz W128 Coupe 220 SE
The W128 series, encompassing sedan, coupe, and cabriolet body styles, marked a transition for Mercedes-Benz. The “Ponton” name, derived from the German word for pontoon, alluded to the car’s rounded, flowing lines and integrated body construction. This unibody design offered improved rigidity and reduced weight compared to older methods. The 220 SE variant, the focus of this article, represented an upgrade over earlier Ponton models, featuring fuel injection – a relatively advanced technology for the period – and increased power. The coupe, with its two-door configuration and graceful roofline, catered to buyers seeking a more sporting and exclusive alternative to the standard sedan.
Engine & Performance
The heart of the 220 SE Coupe is its 2.2-liter (2195 cm3) inline-six cylinder engine, designated the M 127 III / 127.983. This engine produced 120 horsepower at 4800 rpm and 189 Nm (139.4 lb.-ft.) of torque at 3900 rpm. A key feature was its multi-port manifold fuel injection system, which improved fuel efficiency and power delivery compared to carbureted engines. The engine’s power-to-weight ratio was 11.7 kg/Hp, and it delivered 54.7 Hp per liter of displacement. Power was delivered to the rear wheels via a four-speed manual transmission. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 15 seconds, while 0 to 60 mph was achieved in around 14.3 seconds. The top speed was rated at 165 km/h (102.53 mph). While these figures may seem modest by modern standards, they were competitive for a luxury coupe of this era.
Design & Features
The W128 Coupe 220 SE boasts a classic, elegant design. Its two-door coupe body style, with a length of 4700 mm (185.04 in) and a width of 1790 mm (70.47 in), presented a sleek and sophisticated profile. The car’s height of 1530 mm (60.24 in) and wheelbase of 2700 mm (106.3 in) contributed to its balanced proportions. Inside, the 220 SE offered comfortable seating for five passengers, although rear seat space was somewhat limited. The interior was typically appointed with high-quality materials, including wood trim and leather upholstery. Safety features, while rudimentary by today’s standards, included robust construction and reliable braking systems. The suspension utilized a double wishbone setup with a transverse stabilizer at the front and a trailing arm configuration 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.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | Ponton |
| Generation | W128 Coupe |
| Type (Engine) | 220 SE (120 Hp) |
| Start of production | August, 1959 |
| End of production | November, 1960 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 2 |
| 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 | 165 km/h (102.53 mph) |
| Weight-to-power ratio | 11.7 kg/Hp |
| Hp/tonne | 85.7 Hp/tonne |
| Weight-to-torque ratio | 7.4 kg/Nm |
| Nm/tonne | 135 Nm/tonne |
| Power | 120 Hp @ 4800 rpm |
| Power per litre | 54.7 Hp/l |
| Torque | 189 Nm @ 3900 rpm (139.4 lb.-ft. @ 3900 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 127 III / 127.983 |
| Engine displacement | 2195 cm3 (133.95 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 80 mm (3.15 in) |
| Piston Stroke | 72.8 mm (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 | 1400 kg (3086.47 lbs) |
| Max. weight | 1830 kg (4034.46 lbs) |
| Max load | 430 kg (947.99 lbs) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Length | 4700 mm (185.04 in) |
| Width | 1790 mm (70.47 in) |
| Height | 1530 mm (60.24 in) |
| Wheelbase | 2700 mm (106.3 in) |
| Front track | 1430 mm (56.3 in) |
| Rear track | 1470 mm (57.87 in) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, 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 Coupe 220 SE remains a testament to the engineering prowess and design sensibilities of the late 1950s. Its combination of elegant styling, robust construction, and relatively advanced technology solidified its place as a desirable classic, representing a significant step forward in the evolution of the Mercedes-Benz brand.
