The Mercedes-Benz W116 series, produced from 1972 to 1979, represented a significant leap forward in luxury and safety for the German automaker. The 280 SE, manufactured from February 1976 to March 1978, occupied a crucial middle ground within the W116 lineup. Positioned above the entry-level 280 S and below the flagship 350 SE/SEL, the 280 SE offered a compelling blend of performance, refinement, and relative affordability. It was a popular choice for buyers seeking the prestige of an S-Class without the higher price tag of the larger-displacement models. The W116 platform itself was revolutionary for its time, introducing features like crumple zones and side-impact protection that set new standards for passenger safety.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class SE (W116) |
| Type (Engine) | 280 SE (177 Hp) |
| Start of production | February, 1976 |
| End of production | March, 1978 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 12.5 l/100 km (18.8 US mpg, 22.6 UK mpg, 8 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.5 sec |
| Acceleration 0 – 62 mph | 10.5 sec |
| Acceleration 0 – 60 mph | 10 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Weight-to-power ratio | 9.1 kg/Hp, 109.9 Hp/tonne |
| Weight-to-torque ratio | 6.9 kg/Nm, 144.7 Nm/tonne |
| Power | 177 Hp @ 6000 rpm |
| Power per litre | 64.5 Hp/l |
| Torque | 233 Nm @ 4500 rpm (171.85 lb.-ft. @ 4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 110 E 28 / 110.985 |
| Engine displacement | 2746 cm3 (167.57 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 86 mm (3.39 in.) |
| Piston Stroke | 78.8 mm (3.1 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 | DOHC |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 11 l (11.62 US qt | 9.68 UK qt) |
| Kerb Weight | 1610 kg (3549.44 lbs.) |
| Max. weight | 2130 kg (4695.85 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space – minimum | 530 l (18.72 cu. ft.) |
| Fuel tank capacity | 96 l (25.36 US gal | 21.12 UK gal) |
| Length | 4960 mm (195.28 in.) |
| Width | 1870 mm (73.62 in.) |
| Height | 1425 mm (56.1 in.) |
| Wheelbase | 2860 mm (112.6 in.) |
| Front track | 1521 mm (59.88 in.) |
| Rear (Back) track | 1505 mm (59.25 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, manual transmission |
| Front suspension | Double wishbone |
| Rear suspension | Wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | Front wheel tires: 195/75 R14Rear wheel tires: 195/75 R14 |
| Wheel rims size | Front wheel rims: 6J x 14Rear wheel rims: 6J x 14 |
Powertrain & Engine Architecture
The heart of the 280 SE was the M110 E 28 inline-six engine, a 2.8-liter (2746 cc) powerplant. This engine featured a cast-iron block and an aluminum cylinder head, employing a dual overhead camshaft (DOHC) valvetrain with two valves per cylinder. Bosch K-Jetronic multi-port fuel injection was standard, providing precise fuel delivery for improved efficiency and performance. The M110 was known for its smoothness and durability, characteristics that became synonymous with Mercedes-Benz engineering. The 280 SE utilized a four-speed manual transmission as standard, offering drivers a direct connection to the engine’s power. While an automatic transmission was available, the manual was favored by enthusiasts for its responsiveness.
Driving Characteristics
The 280 SE, with its 177 horsepower and 172 lb-ft of torque, offered a comfortable and refined driving experience. Acceleration to 60 mph took around 10 seconds, respectable for the era, but not particularly sporty. The focus was more on effortless cruising and quiet operation. The manual transmission allowed for precise gear selection, maximizing the engine’s potential, while the automatic provided convenience for everyday driving. Compared to the more powerful 350 SE, the 280 SE felt less urgent, but it also offered better fuel economy and a lighter feel in corners. The suspension, tuned for comfort, absorbed bumps effectively, providing a smooth ride even on less-than-perfect roads.
Equipment & Trim Levels
The 280 SE came standard with a generous array of features for its time, including power steering, power-assisted disc brakes, central locking, and a high-quality radio. The interior was typically upholstered in leather or high-grade cloth, with wood trim adorning the dashboard and door panels. Optional extras included air conditioning, sunroof, and a more sophisticated audio system. The level of trim could vary depending on the market, with some regions offering more luxurious appointments as standard.
Chassis & Braking
The W116 chassis featured independent suspension all around, with double wishbones at the front and a semi-trailing arm setup at the rear. This configuration provided a comfortable ride and good handling characteristics. Ventilated disc brakes were fitted to all four wheels, offering ample stopping power. Power-assisted steering made maneuvering the large sedan relatively easy. The 280 SE’s weight of approximately 3550 pounds was well-managed by the suspension and braking systems, providing a stable and predictable driving experience.
Market Reception & Comparison
The 280 SE was well-received by automotive critics, who praised its comfort, refinement, and build quality. It was seen as a sensible alternative to the more expensive 350 SE, offering a similar level of luxury at a lower price point. Fuel economy, while not exceptional by modern standards, was better than that of the larger-displacement models. Reliability was generally good, although maintenance costs could be high due to the complexity of the engine and the availability of parts. Compared to its domestic rivals, such as the BMW E3, the 280 SE offered a more traditional and understated luxury experience.
Legacy
The Mercedes-Benz 280 SE (W116) remains a sought-after classic car today. The M110 engine is known for its longevity and relatively straightforward maintenance, making it a popular choice for enthusiasts. Well-maintained examples command strong prices in the used car market. The W116 series as a whole is remembered for its pioneering safety features and its contribution to the evolution of the modern luxury sedan. While not the fastest or most technologically advanced car of its era, the 280 SE represents a high point in Mercedes-Benz engineering and a testament to the enduring appeal of classic German automobiles.
