The Mercedes-Benz S-Class SEL (V116) 280 SEL, produced from February 1976 to April 1978, represented a refined and moderately powered entry point into the prestigious S-Class range. Positioned as a luxury sedan, the 280 SEL occupied a middle ground within the V116 generation, offering a balance between performance and fuel efficiency compared to its larger-engined siblings like the 350 SEL and 450 SEL. The “SEL” designation signified the long-wheelbase version, prioritizing rear passenger comfort. This model was primarily aimed at the North American and European markets, where buyers sought a sophisticated and comfortable luxury vehicle without the outright performance of the top-tier models.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class SEL (V116) |
| Type (Engine) | 280 SEL (177 Hp) |
| Start of production | February, 1976 |
| End of production | April, 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 | 9.3 kg/Hp, 107.6 Hp/tonne |
| Weight-to-torque ratio | 7.1 kg/Nm, 141.6 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 | 9:1 |
| Number of valves per cylinder | 4 |
| 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 | 1645 kg (3626.6 lbs.) |
| Max. weight | 2165 kg (4773.01 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 | 5060 mm (199.21 in.) |
| Width | 1870 mm (73.62 in.) |
| Height | 1430 mm (56.3 in.) |
| Wheelbase | 2960 mm (116.54 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 | Trailing arm |
| 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 280 SEL was powered by the M110 E 28 engine, a 2.8-liter inline-six cylinder powerplant. This engine, a descendant of Mercedes-Benz’s long-running M110 family, featured a cast-iron block and an aluminum cylinder head. It employed a double overhead camshaft (DOHC) valvetrain, a relatively advanced feature for the time, contributing to its smooth operation and respectable power output. Fuel delivery was handled by a Bosch K-Jetronic multi-port fuel injection system, which improved fuel efficiency and reduced emissions compared to carbureted engines. The engine produced 177 horsepower at 6000 rpm and 233 Nm (171.85 lb-ft) of torque at 4500 rpm. The engine’s longitudinal mounting and rear-wheel drive configuration were standard for Mercedes-Benz sedans of this era. The 4-speed manual transmission was the standard offering, providing drivers with direct control over the engine’s power.
Driving Characteristics
The 280 SEL, with its 177 hp and manual transmission, offered a comfortable and refined driving experience. Acceleration to 60 mph took approximately 10 seconds, which was adequate for the time but not particularly sporty. The engine delivered smooth and linear power, making it well-suited for long-distance cruising. The manual gearbox, while offering more driver engagement than an automatic, wasn’t known for its particularly short throws. Compared to the 350 SEL and 450 SEL, the 280 SEL felt less powerful, especially during overtaking maneuvers. However, its lighter weight and more efficient engine resulted in better fuel economy. The long wheelbase and sophisticated suspension provided a comfortable ride, absorbing bumps and imperfections in the road effectively.
Equipment & Trim Levels
The 280 SEL came standard with a generous array of features befitting its luxury status. These included power-assisted steering, ventilated disc brakes on the front wheels, and comfortable cloth upholstery. Power windows, central locking, and an electric sunroof were often included as optional extras. The interior was characterized by its wood trim, leather-wrapped steering wheel, and high-quality materials. The SEL designation meant a longer wheelbase, translating to increased rear legroom, making it a popular choice for chauffeured transport. Optional features could significantly increase the price, allowing buyers to customize their vehicle to their specific preferences.
Chassis & Braking
The V116 S-Class featured a robust chassis with independent suspension all around. The front suspension utilized double wishbones, while the rear employed a trailing arm setup. This configuration provided a comfortable ride and good handling characteristics. The 280 SEL was equipped with ventilated disc brakes on the front wheels and disc brakes on the rear, providing ample stopping power. Hydraulic power steering was standard, making maneuvering the large sedan relatively easy. Tire size was typically 195/75 R14 all around, mounted on 6J x 14 inch wheels.
Market Reception & Comparison
The 280 SEL was generally well-received by automotive critics, who praised its comfortable ride, refined interior, and fuel efficiency. However, some critics noted that its performance was somewhat underwhelming compared to its larger-engined siblings. Compared to the 350 SEL, the 280 SEL offered better fuel economy but less power. The 450 SEL, with its V8 engine, provided significantly more performance but at the cost of increased fuel consumption. The 280 SEL appealed to buyers who prioritized comfort and efficiency over outright speed.
Legacy
The Mercedes-Benz V116 S-Class, including the 280 SEL variant, is considered a classic of the era. The M110 engine, while not the most powerful in the lineup, is known for its durability and reliability. Well-maintained examples of the 280 SEL are highly sought after by collectors today. The car’s robust construction and relatively simple mechanicals make it easier to maintain than some of its more complex contemporaries. The 280 SEL represents a significant chapter in Mercedes-Benz’s history, embodying the brand’s commitment to luxury, comfort, and engineering excellence.
