The Mercedes-Benz S 280 (W140 facelift), produced from March 1994 to May 1996, 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. This variant was part of the W140 series, a generation renowned for its robust build quality, advanced safety features, and opulent interior. The facelift models, introduced in 1994, featured subtle styling revisions and improvements to the engine lineup.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class (W140, facelift 1994) |
| Type (Engine) | S 280 (193 Hp) 4G-TRONIC |
| Start of production | March, 1994 |
| End of production | May, 1996 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.1 l/100 km (16.7 US mpg, 20 UK mpg, 7.1 km/l) |
| Fuel consumption (extra urban) | 9.6-11.6 l/100 km (24.5 – 20.3 US mpg, 29.4 – 24.4 UK mpg, 10.4 – 8.6 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 | 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, 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 significant departure from the earlier V8 engines traditionally found in the S-Class. The M104 featured a cast iron block with an aluminum cylinder head, dual overhead camshafts (DOHC), and four valves per cylinder. Fuel delivery was handled by a Bosch Motronic multi-port fuel injection system, optimizing fuel efficiency and emissions. The engine produced 193 horsepower at 5500 rpm and 270 Nm (199 lb-ft) of torque at 3750 rpm. Paired exclusively with a four-speed 4G-TRONIC automatic transmission, the powertrain was designed for smooth, effortless cruising rather than sporty acceleration. The 4G-TRONIC, while reliable, was a relatively conventional automatic for its time, lacking the manual shift capabilities or advanced electronic controls found in later transmissions.
Driving Characteristics
The S 280 offered a comfortable and refined driving experience, prioritizing smoothness and quietness over outright performance. Acceleration from 0 to 60 mph took around 10.5 seconds, and top speed was electronically limited to 210 km/h (130 mph). The automatic transmission, while providing seamless gear changes, could feel somewhat sluggish compared to the manual transmissions available in other S-Class models. The gear ratios were optimized for fuel economy and relaxed highway cruising. Compared to the S 320 or S 420, the S 280 felt noticeably less powerful, particularly when overtaking or climbing hills. However, the lighter weight of the inline-six engine contributed to slightly better handling balance.
Equipment & Trim Levels
Even as the entry-level S-Class, the S 280 was generously equipped. Standard features included automatic climate control, power-adjustable front seats, a high-quality sound system, and a sunroof. Leather upholstery was standard, and wood trim adorned the interior, creating a luxurious ambiance. Optional extras included heated seats, a rear sunshade, a premium sound system, and a telephone system. The S 280 typically featured a more restrained interior trim compared to the higher-end models, with fewer chrome accents and simpler upholstery options.
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 employed a multi-link setup. Both ends were equipped with a transverse stabilizer bar to reduce body roll. The S 280 came standard with ventilated disc brakes at the front and solid discs at the rear. Anti-lock braking system (ABS) was standard, enhancing safety and stability during hard braking. The steering was a recirculating ball system with hydraulic power assistance, providing a comfortable but somewhat indirect steering feel.
Market Reception & Comparison
The S 280 was generally well-received by critics as a sensible and luxurious option within the S-Class range. It offered a significant step up in comfort and refinement compared to more mainstream luxury cars, while being more affordable than its higher-powered siblings. Fuel economy was a strong point, particularly compared to the V8 models. However, some reviewers criticized the S 280’s lack of outright performance, arguing that it didn’t fully live up to the S-Class reputation for dynamic driving. Compared to the S 320, the S 280 offered a similar level of luxury but with less power and a slightly lower price tag. The S 280 appealed to buyers who prioritized comfort and fuel efficiency over performance.
Legacy
The M104 engine, found in the S 280, is known for its durability and reliability. With proper maintenance, these engines can accumulate high mileage without major issues. The 4G-TRONIC transmission is also generally reliable, although it may require servicing as it ages. Today, the W140 S 280 is considered a classic car, appreciated for its build quality, luxurious interior, and relatively affordable price point. Well-maintained examples are becoming increasingly collectible, appealing to enthusiasts who appreciate the engineering and design of this iconic Mercedes-Benz.
