The Mercedes-Benz S 280 (W140 facelift, produced 1994-1998) represented a compelling entry point into the flagship S-Class range during a period of significant technological advancement for the brand. Positioned below the more powerful S 320, S 420, and S 500 models, the S 280 offered a blend of luxury, refinement, and reasonable running costs, appealing to buyers who prioritized comfort and prestige over outright performance. It was a key variant in the W140 series, which itself was a landmark vehicle known for its robust build quality and pioneering safety features. The “facelift” designation refers to the updates introduced in 1994, which included revised styling, improved engine management, and enhanced interior appointments.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class (W140, facelift 1994) |
| Type (Engine) | S 280 (193 Hp) 5G-TRONIC |
| Start of production | March, 1994 |
| End of production | August, 1998 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.6 l/100 km (16.1 US mpg, 19.3 UK mpg, 6.8 km/l) |
| Fuel consumption (extra urban) | 8.8-10.7 l/100 km (26.7 – 22 US mpg, 32.1 – 26.4 UK mpg, 11.4 – 9.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 11 sec |
| Acceleration 0 – 62 mph | 11 sec |
| Acceleration 0 – 60 mph | 10.5 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Weight-to-power ratio | 9.8 kg/Hp, 102.1 Hp/tonne |
| Weight-to-torque ratio | 7 kg/Nm, 142.9 Nm/tonne |
| Power | 193 Hp @ 5500 rpm |
| Power per litre | 69 Hp/l |
| Torque | 270 Nm @ 3750 rpm (199.14 lb.-ft. @ 3750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 104.944 |
| Engine displacement | 2799 cm3 (170.81 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 89.9 mm (3.54 in.) |
| Piston Stroke | 73.5 mm (2.89 in.) |
| Compression ratio | 10:1 |
| 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 | 14.5 l (15.32 US qt | 12.76 UK qt) |
| Kerb Weight | 1890 kg (4166.74 lbs.) |
| Max. weight | 2550 kg (5621.79 lbs.) |
| Max load | 660 kg (1455.05 lbs.) |
| Trunk (boot) space – minimum | 525 l (18.54 cu. ft.) |
| Fuel tank capacity | 100 l (26.42 US gal | 22 UK gal) |
| Length | 5113 mm (201.3 in.) |
| Width | 1886 mm (74.25 in.) |
| Height | 1486 mm (58.5 in.) |
| Wheelbase | 3040 mm (119.69 in.) |
| Front track | 1606 mm (63.23 in.) |
| Rear (Back) track | 1579 mm (62.17 in.) |
| Minimum turning circle | 12.18 m (39.96 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, automatic transmission G-TRONIC |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer, Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 235/60 R16 |
| Wheel rims size | 7.5J x 16 |
Powertrain & Engine Architecture
The S 280 was powered by the M104.944, a 2.8-liter inline-six engine. This engine was a descendant of the M104 family, known for its smoothness and durability. The M104.944 featured a cast iron block and aluminum cylinder head, incorporating dual overhead camshafts (DOHC) and four valves per cylinder. Fuel delivery was handled by a Bosch Motronic multi-port fuel injection system, optimizing combustion for both power and efficiency. The engine produced 193 horsepower at 5500 rpm and 270 Nm (199 lb-ft) of torque at 3750 rpm. Paired with the engine was the 5G-TRONIC automatic transmission, a five-speed unit that provided smooth and refined gear changes. This transmission was a significant upgrade over earlier Mercedes-Benz automatics, offering improved responsiveness and efficiency.
Driving Characteristics
The S 280, with its 193 hp and automatic transmission, offered a comfortable and relaxed driving experience. Acceleration was adequate, with a 0-60 mph time of around 10.5 seconds, but it wasn’t designed for sporty performance. The 5G-TRONIC transmission was programmed for smoothness rather than aggressive shifts, prioritizing comfort over outright speed. Compared to the S 320 or S 420, the S 280 felt noticeably less powerful, particularly during overtaking maneuvers. However, the inline-six engine provided a linear power delivery, making it easy to modulate throttle response. The automatic transmission’s gear ratios were optimized for cruising, providing relaxed highway driving.
Equipment & Trim Levels
The S 280 came standard with a generous array of luxury features, befitting its status as a flagship sedan. Standard equipment included leather upholstery, power-adjustable front seats with memory function, automatic climate control, a premium sound system, and power windows and locks. Safety features were also comprehensive, including ABS anti-lock brakes, airbags, and traction control. Optional extras included a sunroof, upgraded sound systems, rear seat entertainment, and various wood trim options. The interior design was characterized by its understated elegance and high-quality materials.
Chassis & Braking
The W140 S-Class featured a robust chassis with independent suspension all around. The front suspension utilized coil springs and double wishbones, while the rear suspension employed a multi-link setup. Both ends were equipped with a transverse stabilizer bar to reduce body roll. The S 280 was equipped with ventilated disc brakes at the front and solid disc brakes at the rear, providing ample stopping power. The steering was a recirculating ball system with hydraulic power assistance, offering a comfortable and precise driving feel.
Market Reception & Comparison
The S 280 was generally well-received by critics as a comfortable and refined luxury sedan. It was praised for its smooth ride, quiet cabin, and high-quality interior. However, some reviewers noted that its performance was somewhat underwhelming compared to its more powerful siblings. Fuel economy was reasonable for a vehicle of its size and class, but not exceptional. Compared to the S 320, the S 280 offered a lower price point, making it more accessible to a wider range of buyers. The S 280 also tended to be more reliable than some of the higher-performance models, due to its simpler engine design.
Legacy
The W140 S 280 has developed a reputation for durability and reliability, particularly the M104 engine. These cars are still found on the road today, often with high mileage and well-maintained. The 5G-TRONIC transmission, while sophisticated for its time, can require maintenance as it ages. In the used car market, the S 280 represents a relatively affordable entry point into W140 S-Class ownership, offering a taste of Mercedes-Benz luxury without the higher price tag of the more powerful models. Its robust construction and relatively simple mechanicals make it a popular choice for enthusiasts and collectors.
