The Mercedes-Benz W116 series, produced from 1972 to 1979, represented a significant leap forward in luxury and safety for the German automaker. The 350 SE V8, introduced in March 1972 and continuing through January 1976, was a key model within the lineup, positioned as a mid-range offering that balanced performance and refinement. It served as a more accessible entry point into the S-Class experience compared to the flagship 450 SE and 450 SEL models. The W116 was the first generation of the S-Class to officially bear that designation, solidifying Mercedes-Benz’s commitment to “Sonderklasse” – Special Class – vehicles.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class SE (W116) |
| Type (Engine) | 350 SE V8 (200 Hp) |
| Start of production | March, 1972 |
| End of production | January, 1976 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 13 l/100 km (18.1 US mpg, 21.7 UK mpg, 7.7 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.5 sec |
| Acceleration 0 – 62 mph | 9.5 sec |
| Acceleration 0 – 60 mph | 9 sec |
| Maximum speed | 205 km/h (127.38 mph) |
| Weight-to-power ratio | 8.4 kg/Hp, 119.4 Hp/tonne |
| Weight-to-torque ratio | 5.9 kg/Nm, 170.7 Nm/tonne |
| Power | 200 Hp @ 5800 rpm |
| Power per litre | 57.2 Hp/l |
| Torque | 286 Nm @ 4000 rpm (210.94 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 116 E 35 / 116.983 |
| Engine displacement | 3499 cm3 (213.52 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92 mm (3.62 in.) |
| Piston Stroke | 65.8 mm (2.59 in.) |
| Compression ratio | 9.5:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1675 kg (3692.74 lbs.) |
| Max. weight | 2195 kg (4839.15 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 | Leaf spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | Front wheel tires: 205/70 R14 Rear wheel tires: 205/70 R14 |
| Wheel rims size | Front wheel rims: 6.5J x 14 Rear wheel rims: 6.5J x 14 |
Powertrain & Engine Architecture
The heart of the 350 SE V8 was the M116 E 35 engine, a 3.5-liter naturally aspirated V8. This engine featured a single overhead camshaft (SOHC) design, with two valves per cylinder. The M116 was notable for its robust construction and relatively simple design, contributing to its longevity. Fuel delivery was handled by a Bosch K-Jetronic multi-port fuel injection system, a sophisticated system for its time that improved fuel efficiency and reduced emissions compared to carbureted engines. The engine produced 200 horsepower at 5800 rpm and 286 Nm (210.94 lb-ft) of torque at 4000 rpm. The 350 SE V8 was typically paired with a four-speed manual transmission, although an optional three-speed automatic transmission was also available, and quite popular with buyers seeking a more relaxed driving experience.
Driving Characteristics
The 350 SE V8 offered a refined and comfortable driving experience. With the manual transmission, the car felt reasonably sporty, offering adequate acceleration for the era. The 0-60 mph time of around 9 seconds was respectable for a large luxury sedan. However, the automatic transmission, while providing smooth shifts, did diminish the car’s responsiveness. The V8 engine delivered smooth, linear power, making it well-suited for long-distance cruising. The suspension, featuring double wishbones at the front and leaf springs at the rear, provided a comfortable ride, although it wasn’t particularly sporty. The steering, utilizing a cone worm and recirculation balls system, was precise but required a fair amount of effort.
Equipment & Trim Levels
The 350 SE V8 came standard with a high level of equipment, befitting its status as a luxury vehicle. Standard features included power-assisted steering, power-assisted disc brakes on all four wheels, central locking, and a high-quality interior with cloth upholstery. Leather upholstery, air conditioning, a sunroof, and a premium sound system were available as optional extras. The interior was characterized by its elegant design and high-quality materials, with wood trim and comfortable seating. The dashboard layout was straightforward and functional, with clearly labeled controls.
Chassis & Braking
The W116 chassis was a robust body-on-frame construction, providing a solid and stable platform. The front suspension utilized double wishbones, while the rear suspension employed leaf springs. This combination offered a good balance of ride comfort and handling. The braking system consisted of ventilated disc brakes on all four wheels, providing ample stopping power. The 350 SE V8 typically rode on 6.5J x 14 inch wheels with 205/70 R14 tires.
Market Reception & Comparison
The 350 SE V8 was well-received by critics and buyers alike. It was praised for its comfortable ride, refined interior, and smooth V8 engine. Compared to the 280 SE, the 350 SE V8 offered significantly more power and performance. However, it was less expensive than the flagship 450 SE and 450 SEL models. Fuel economy, at 13 l/100 km (18.1 US mpg), was typical for a large V8-powered car of the era. Reliability was generally good, although the K-Jetronic fuel injection system could require specialized maintenance.
Legacy
The Mercedes-Benz W116 350 SE V8 remains a desirable classic car today. The M116 engine is known for its durability and longevity, and well-maintained examples can still provide years of reliable service. The car’s elegant styling and comfortable interior continue to appeal to enthusiasts. While parts availability can be a challenge, a dedicated network of suppliers and specialists exists to support W116 owners. The 350 SE V8 represents a high point in Mercedes-Benz engineering and design, and it remains a testament to the brand’s commitment to luxury and quality.
