The Mercedes-Benz 260 SE, part of the W126 S-Class range produced from June 1985 to February 1991, represented a key entry point into the flagship sedan line. Positioned below the 300 SE and 560 SE, the 260 SE offered a blend of S-Class luxury and refinement with a more accessible price point. This facelifted W126, introduced in 1985, featured subtle but significant updates to the exterior and interior, solidifying the S-Class’s reputation for quality and innovation. The 260 SE was primarily marketed in Europe and other regions outside of North America, where larger displacement engines were favored.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class SE (W126, facelift 1985) |
| Type (Engine) | 260 SE (166 Hp) Automatic |
| Start of production | June, 1985 |
| End of production | February, 1991 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 13.3 l/100 km (17.7 US mpg, 21.2 UK mpg, 7.5 km/l) |
| Fuel consumption (extra urban) | 8.8 l/100 km (26.7 US mpg, 32.1 UK mpg, 11.4 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 | 9.2 kg/Hp, 109.2 Hp/tonne |
| Weight-to-torque ratio | 6.7 kg/Nm, 150 Nm/tonne |
| Power | 166 Hp @ 5800 rpm |
| Power per litre | 63.9 Hp/l |
| Torque | 228 Nm @ 4600 rpm (168.16 lb.-ft. @ 4600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 103 E 26 / 103.941 |
| Engine displacement | 2599 cm3 (158.6 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 82.9 mm (3.26 in.) |
| Piston Stroke | 80.25 mm (3.16 in.) |
| Compression ratio | 9.2:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Engine oil capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Coolant | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1520 kg (3351.03 lbs.) |
| Max. weight | 2040 kg (4497.43 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Fuel tank capacity | 90 l (23.78 US gal | 19.8 UK gal) |
| Length | 5020 mm (197.64 in.) |
| Width | 1820 mm (71.65 in.) |
| Height | 1437 mm (56.57 in.) |
| Wheelbase | 2930 mm (115.35 in.) |
| Front track | 1555 mm (61.22 in.) |
| Rear (Back) track | 1527 mm (60.12 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, automatic 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: 205/65 R15Rear wheel tires: 205/65 R15 |
| Wheel rims size | Front wheel rims: 7J x 15Rear wheel rims: 7J x 15 |
Powertrain & Engine Architecture
The 260 SE was powered by the M103 E 26 engine, a 2.6-liter inline-six cylinder gasoline engine. This engine, part of the M103 family, was known for its smoothness and reliability. It featured a single overhead camshaft (SOHC) valvetrain operating two valves per cylinder. Fuel delivery was handled by a Bosch K-Jetronic multi-port fuel injection system, a mechanical system known for its precision and durability. The engine produced 166 horsepower at 5800 rpm and 228 Nm (168 lb-ft) of torque at 4600 rpm. The engine’s longitudinal mounting and rear-wheel drive configuration were standard for Mercedes-Benz sedans of the era. Paired with the M103 was a four-speed automatic transmission, providing comfortable and effortless shifting. This transmission was designed for smooth operation and was a key component of the S-Class’s luxurious driving experience.
Driving Characteristics
The 260 SE Automatic offered a comfortable and refined driving experience, prioritizing smoothness over outright performance. The 166 hp engine, while adequate, wasn’t particularly quick, taking around 10.5 seconds to reach 60 mph. The automatic transmission, while contributing to the ease of driving, did result in some power loss compared to the available manual transmission. Gear ratios were optimized for cruising, making it well-suited for long highway journeys. Compared to the more powerful 300 SE, the 260 SE felt noticeably less responsive, especially during acceleration. However, it offered a more economical option for those who didn’t require the extra performance.
Equipment & Trim Levels
The 260 SE came standard with a generous array of features befitting its S-Class designation. These included power windows, central locking, air conditioning, and a high-quality sound system. Interior upholstery was typically cloth, although leather was available as an option. The dashboard featured wood trim and analog gauges, reflecting the understated elegance of the W126 design. Optional extras included a sunroof, heated seats, and a more advanced audio system. The trim level was generally considered mid-range within the S-Class lineup, offering a good balance of features and affordability.
Chassis & Braking
The W126 S-Class featured a robust chassis with double wishbone suspension at the front and a trailing arm suspension at the rear. This setup provided a comfortable ride and good handling characteristics. The 260 SE utilized ventilated disc brakes at the front and solid disc brakes at the rear, providing adequate stopping power for its weight and performance. Hydraulic power steering was standard, making maneuvering easy and effortless. The suspension was tuned for comfort, prioritizing a smooth ride over sporty handling.
Market Reception & Comparison
The 260 SE was generally well-received by automotive critics, who praised its comfort, refinement, and build quality. However, some critics noted that its performance was somewhat underwhelming compared to its larger-engined siblings. Fuel economy was considered reasonable for a luxury sedan of its size and era. Compared to the 300 SE, the 260 SE offered a more affordable entry point into the S-Class range, but at the expense of performance. The 260 SE was often seen as a sensible choice for buyers who prioritized comfort and reliability over outright speed.
Legacy
The M103 engine, found in the 260 SE, is known for its durability and longevity. With proper maintenance, these engines can reliably exceed 200,000 miles. The W126 S-Class, as a whole, is highly regarded by classic car enthusiasts for its build quality and timeless design. Today, the 260 SE represents an affordable way to experience the luxury and refinement of the S-Class. While not as sought-after as the higher-performance models, the 260 SE remains a desirable classic car, particularly for those seeking a comfortable and reliable cruiser.
