The Mercedes-Benz S-Class W140 600 SE, produced from 1991 to 1993, represented the pinnacle of German engineering and luxury during its time. Positioned as the flagship model within the W140 series – the third generation of the S-Class – the 600 SE boasted a powerful V12 engine and a sophisticated automatic transmission, catering to a clientele demanding the utmost in performance and refinement. It was a statement vehicle, intended to showcase Mercedes-Benz’s technological prowess and establish a new benchmark for luxury sedans. The W140 platform itself was a significant leap forward, introducing numerous innovations in safety, comfort, and build quality that would influence automotive design for years to come.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class (W140) |
| Type (Engine) | 600 SE (408 Hp) Automatic |
| Start of production | 1991 year |
| End of production | 1993 year |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – combined | 13.7 l/100 km |
| Fuel consumption (economy) – combined | 17.2 US mpg |
| Fuel consumption (economy) – combined | 20.6 UK mpg |
| Fuel consumption (economy) – combined | 7.3 km/l |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6 sec |
| Acceleration 0 – 62 mph | 6 sec |
| Acceleration 0 – 60 mph | 5.7 sec |
| Maximum speed | 250 km/h |
| Maximum speed | 155.34 mph |
| Weight-to-power ratio | 5.3 kg/Hp |
| Weight-to-power ratio | 187.2 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm |
| Weight-to-torque ratio | 266.1 Nm/tonne |
| Power | 408 Hp @ 5200 rpm |
| Power per litre | 68.1 Hp/l |
| Torque | 580 Nm @ 3800 rpm |
| Torque | 427.79 lb.-ft. @ 3800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 120 E 60/120.980 |
| Engine displacement | 5987 cm3 |
| Engine displacement | 365.35 cu. in. |
| Number of cylinders | 12 |
| Engine configuration | V-engine |
| Cylinder Bore | 89 mm |
| Cylinder Bore | 3.5 in. |
| Piston Stroke | 80.2 mm |
| Piston Stroke | 3.16 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 | 10 l |
| Engine oil capacity | 10.57 US qt | 8.8 UK qt |
| Coolant | 18.5 l |
| Coolant | 19.55 US qt | 16.28 UK qt |
| Kerb Weight | 2180 kg |
| Kerb Weight | 4806.08 lbs. |
| Max. weight | 2640 kg |
| Max. weight | 5820.2 lbs. |
| Max load | 460 kg |
| Max load | 1014.13 lbs. |
| Trunk (boot) space – minimum | 535 l |
| Trunk (boot) space – minimum | 18.89 cu. ft. |
| Fuel tank capacity | 100 l |
| Fuel tank capacity | 26.42 US gal | 22 UK gal |
| Permitted trailer load with brakes (12%) | 1900 kg |
| Permitted trailer load with brakes (12%) | 4188.78 lbs. |
| Permitted trailer load without brakes | 750 kg |
| Permitted trailer load without brakes | 1653.47 lbs. |
| Length | 5113 mm |
| Length | 201.3 in. |
| Width | 1886 mm |
| Width | 74.25 in. |
| Height | 1490 mm |
| Height | 58.66 in. |
| Wheelbase | 3040 mm |
| Wheelbase | 119.69 in. |
| Front track | 1602 mm |
| Front track | 63.07 in. |
| Rear (Back) track | 1574 mm |
| Rear (Back) track | 61.97 in. |
| Minimum turning circle (turning diameter) | 12.18 m |
| Minimum turning circle (turning diameter) | 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 |
| Front suspension | Wishbone |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 235/60 R16 |
| Wheel rims size | 7.5J x 16 |
Powertrain & Engine Architecture
The heart of the 600 SE was the M120 E 60 engine, a 6.0-liter (5987 cc) naturally aspirated V12. This engine was a masterpiece of engineering, featuring all-aluminum construction, dual overhead camshafts (DOHC), and four valves per cylinder. The M120 utilized a Bosch Motronic fuel injection system, carefully managing fuel delivery for optimal performance and efficiency. Its 89mm bore and 80.2mm stroke contributed to a robust and smooth power delivery. Paired with the V12 was a four-speed automatic transmission, specifically designed to handle the engine’s substantial torque output of 580 Nm (427.79 lb-ft). This transmission, while not as sophisticated as some later automatics, provided smooth and reliable shifting, prioritizing comfort and refinement over outright speed.
Driving Characteristics
The 600 SE offered a driving experience characterized by effortless power and a supremely comfortable ride. The V12 engine provided ample acceleration, achieving 0-60 mph in approximately 5.7 seconds. While not a sports car, the 600 SE felt remarkably agile for its size and weight (2180 kg / 4806.08 lbs). The automatic transmission, while smooth, did result in some power loss compared to the available manual transmissions in other S-Class variants. The gear ratios were tuned for relaxed cruising, making it an ideal grand tourer. The emphasis was on providing a serene and isolated driving experience, shielding occupants from road imperfections and engine noise.
Equipment & Trim Levels
The 600 SE came standard with a comprehensive array of luxury features. Leather upholstery was standard, along with wood trim, power-adjustable seats with memory function, and a premium sound system. Climate control, power windows, and central locking were also included. Optional extras included a rear seat entertainment system, a telephone, and upgraded leather options. The interior design was understated yet elegant, reflecting Mercedes-Benz’s commitment to timeless luxury. The dashboard layout was logical and intuitive, prioritizing ease of use.
Chassis & Braking
The W140 S-Class featured a robust chassis with independent suspension all around. The front suspension utilized a wishbone design, while the rear employed a multi-link setup with a stabilizer bar. This configuration provided a comfortable ride and excellent handling characteristics. The 600 SE was equipped with ventilated disc brakes on all four wheels, coupled with an Anti-lock Braking System (ABS) for enhanced safety. The braking system was more than capable of handling the car’s weight and performance.
Market Reception & Comparison
The 600 SE was widely praised by automotive critics for its luxurious interior, powerful engine, and refined driving experience. However, its high price tag limited its appeal to a relatively small segment of the market. Compared to the other S-Class variants, such as the 300 SE and 400 SE, the 600 SE offered significantly more performance and prestige. Fuel economy, at 13.7 l/100 km (17.2 US mpg), was understandably poor, reflecting the engine’s size and power. Reliability was generally good, although the complex V12 engine and its associated systems required diligent maintenance.
Legacy
The Mercedes-Benz S-Class W140 600 SE remains a highly sought-after classic car today. Its combination of luxury, performance, and engineering excellence has cemented its place in automotive history. While maintenance costs can be substantial due to the complexity of the V12 engine, well-maintained examples command premium prices in the used car market. The M120 engine, despite its age, is known for its durability and longevity when properly cared for. The W140 S-Class, and particularly the 600 SE, represents a high point in Mercedes-Benz engineering and a testament to the enduring appeal of classic luxury automobiles.
