The Mercedes-Benz E 270 CDI automatic, produced from July 1999 to February 2002, represents a significant iteration of the W210 E-Class facelift. Positioned as a mid-range offering within the E-Class lineup, it combined the fuel efficiency of a modern common-rail diesel engine with the convenience of an automatic transmission. This variant aimed to appeal to drivers seeking a comfortable, refined, and economical luxury sedan. It was a key model in Mercedes-Benz’s strategy to offer increasingly efficient diesel options in the European market, and saw limited import to the United States through grey market channels.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class (W210, facelift 1999) |
| Type (Engine) | E 270 CDI (170 Hp) Automatic |
| Start of production | July, 1999 |
| End of production | February, 2002 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 9.6 l/100 km (24.5 US mpg) |
| Fuel consumption (extra urban) | 5.7 l/100 km (41.3 US mpg) |
| Fuel consumption (combined) | 7.2 l/100 km (32.7 US mpg) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.3 sec |
| Acceleration 0 – 62 mph | 9.3 sec |
| Acceleration 0 – 60 mph | 8.8 sec |
| Maximum speed | 220 km/h (136.7 mph) |
| Weight-to-power ratio | 9.6 kg/Hp |
| Weight-to-torque ratio | 4.4 kg/Nm |
| Power | 170 Hp @ 4200 rpm |
| Torque | 370 Nm @ 1600 rpm (272.9 lb.-ft. @ 1600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 612 DE 27 LA / 612.961 |
| Engine displacement | 2685 cm3 (163.85 cu. in.) |
| Number of cylinders | 5 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 18:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant capacity | 10.6 l (11.2 US qt | 9.33 UK qt) |
| Kerb Weight | 1630 kg (3593.53 lbs.) |
| Max. weight | 2130 kg (4695.85 lbs.) |
| Max load | 500 kg (1102.31 lbs.) |
| Trunk (boot) space – minimum | 520 l (18.36 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4818 mm (189.69 in.) |
| Width | 1799 mm (70.83 in.) |
| Height | 1440 mm (56.69 in.) |
| Wheelbase | 2833 mm (111.54 in.) |
| Front track | 1534 mm (60.39 in.) |
| Rear (Back) track | 1528 mm (60.16 in.) |
| Drag coefficient (Cd) | 0.29 |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 215/55 R16 |
| Wheel rims size | 7.5J x 16 |
Powertrain & Engine Architecture
The E 270 CDI is powered by the OM612 DE 27 LA engine, a 2.7-liter inline-five cylinder diesel. This engine was a significant step forward for Mercedes-Benz, utilizing common-rail direct injection technology. This system, supplied by Bosch, allowed for multiple injections per combustion cycle, resulting in quieter operation, reduced emissions, and improved fuel efficiency. The engine featured a turbocharger with an intercooler to boost power output. The DOHC valvetrain, with four valves per cylinder, further enhanced breathing and performance. The engine produced 170 horsepower at 4200 rpm and a substantial 370 Nm (272.9 lb-ft) of torque at a low 1600 rpm. This torque delivery was a hallmark of the engine, providing strong acceleration and effortless cruising. The five-speed automatic transmission, a 722.6 unit, was specifically calibrated to work with the engine’s torque characteristics, offering smooth shifts and responsive performance.
Driving Characteristics
The E 270 CDI automatic offered a distinctly different driving experience compared to its gasoline-powered siblings, such as the E 280 or E 320. While lacking the outright acceleration of those models, the E 270 CDI excelled in providing relaxed, effortless cruising. The high torque output meant that overtaking maneuvers were easily accomplished without needing to downshift. The automatic transmission, while not offering the sportiness of a manual, provided smooth and predictable gear changes. The gear ratios were optimized for fuel efficiency and comfortable highway driving. Compared to the more powerful E-Class variants, the E 270 CDI felt less eager to rev, but its strong low-end torque made it a capable and practical vehicle for everyday use.
Equipment & Trim Levels
The E 270 CDI automatic typically came well-equipped, reflecting Mercedes-Benz’s luxury positioning. Standard features included automatic climate control, power windows and mirrors, central locking, and a high-quality audio system. Interior upholstery was typically cloth, with leather options available as an upgrade. The dashboard layout was typical of the W210 facelift, featuring a wood trim and a clear, functional design. Optional extras included a sunroof, heated seats, a navigation system, and upgraded audio systems. The E 270 CDI often sat in a sweet spot in the lineup, offering a good balance of features and affordability compared to the more expensive E 320 CDI or E 430 models.
Chassis & Braking
The W210 E-Class featured a robust chassis with a double wishbone front suspension and an independent multi-link rear suspension. This setup provided a comfortable ride and good handling characteristics. The E 270 CDI, due to its weight, benefited from the stability offered by the suspension design. Braking was handled by ventilated discs at the front and solid discs at the rear. Anti-lock braking system (ABS) was standard, providing enhanced safety and control. The steering was a hydraulic power-assisted rack and pinion system, offering precise and responsive steering feel.
Market Reception & Comparison
The E 270 CDI was generally well-received by automotive critics, particularly for its fuel efficiency and refined driving experience. It was praised for its comfortable ride, quiet engine, and strong torque output. However, some critics noted that the automatic transmission could feel slightly sluggish at times. Compared to the gasoline-powered E-Class models, the E 270 CDI offered significantly better fuel economy, making it a popular choice for drivers covering long distances. In terms of reliability, the OM612 engine proved to be a durable and long-lasting unit, although common-rail diesel systems can be susceptible to issues with injectors and the high-pressure fuel pump over time.
Legacy
The Mercedes-Benz E 270 CDI automatic has become a sought-after classic among enthusiasts and those seeking a reliable and economical luxury car. The OM612 engine is known for its longevity and relatively straightforward maintenance. While parts availability can be a concern for some components, the engine itself is generally robust. Today, well-maintained examples of the E 270 CDI can still provide years of reliable service, offering a unique blend of comfort, refinement, and fuel efficiency. The model represents a pivotal moment in Mercedes-Benz’s diesel engine development, paving the way for future generations of efficient and powerful diesel vehicles.
