The Mercedes-Benz E 270 CDI, produced from July 1999 to February 2002, was a significant variant within the W210 E-Class facelift range. Representing a move towards more efficient diesel technology, the E 270 CDI aimed to offer a blend of performance and economy within the mid-size luxury sedan segment. It occupied a middle ground in the W210 lineup, positioned above the E 220 CDI and below the more powerful E 320 CDI, appealing to buyers seeking a refined driving experience without sacrificing fuel efficiency. This model was primarily marketed in Europe, where diesel engines held a substantial market share, and represented a key step in Mercedes-Benz’s development of common-rail diesel technology.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class (W210, facelift 1999) |
| Type (Engine) | E 270 CDI (170 Hp) |
| 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) | 9.4 l/100 km (25 US mpg, 30.1 UK mpg, 10.6 km/l) |
| Fuel consumption (extra urban) | 5.4 l/100 km (43.6 US mpg, 52.3 UK mpg, 18.5 km/l) |
| Fuel consumption (combined) | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9 sec |
| Acceleration 0 – 62 mph | 9 sec |
| Acceleration 0 – 60 mph | 8.6 sec |
| Maximum speed | 225 km/h (139.81 mph) |
| Weight-to-power ratio | 9.6 kg/Hp, 104.3 Hp/tonne |
| Weight-to-torque ratio | 4.4 kg/Nm, 227 Nm/tonne |
| Power | 170 Hp @ 4200 rpm |
| Power per litre | 63.3 Hp/l |
| 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 | 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 | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, manual 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 heart of the E 270 CDI is the OM 612 DE 27 LA engine, a 2.7-liter inline-five cylinder diesel. This engine was a key component of Mercedes-Benz’s transition to common-rail direct injection, a technology that significantly improved fuel efficiency and reduced noise compared to earlier diesel systems. The OM 612 featured a turbocharger with an intercooler, boosting power output to 170 horsepower at 4200 rpm and a substantial 370 Nm (272.9 lb-ft) of torque at a low 1600 rpm. The engine utilized a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing gas flow for improved performance. The 6-speed manual transmission was standard, providing a wide range of gear ratios to maximize both fuel economy and acceleration. While an automatic transmission was available, the manual was favored by enthusiasts for its responsiveness and direct feel.
Driving Characteristics
The E 270 CDI with the manual transmission offered a surprisingly engaging driving experience. The high torque output meant strong acceleration from low speeds, making it well-suited for everyday driving and overtaking maneuvers. While not a sports car, the E 270 CDI provided a comfortable and refined ride, typical of the W210 E-Class. The 6-speed gearbox allowed drivers to keep the engine in its optimal power band, maximizing efficiency and responsiveness. Compared to the E 220 CDI, the E 270 CDI offered noticeably more power, while the E 320 CDI provided even greater performance but at the cost of increased fuel consumption. The manual transmission, while offering more control, required more driver involvement than the optional automatic.
Equipment & Trim Levels
The E 270 CDI typically came well-equipped, reflecting its position as a mid-range luxury sedan. Standard features included automatic climate control, power windows and mirrors, central locking, and an upgraded audio system. Interior upholstery was typically cloth, with leather options available as an upgrade. Optional extras included a sunroof, heated seats, a navigation system, and upgraded wheels. The dashboard layout was consistent with other W210 models, featuring a classic Mercedes-Benz design with wood trim and analog gauges. Trim levels varied slightly depending on the market, but generally focused on adding comfort and convenience features.
Chassis & Braking
The W210 E-Class featured a robust chassis with a double wishbone front suspension and an independent multi-link rear suspension, providing a comfortable and controlled ride. The E 270 CDI was equipped 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 hydraulic power-assisted rack and pinion system, offering precise and responsive handling. The suspension was tuned to balance comfort and handling, providing a stable and predictable driving experience.
Market Reception & Comparison
The E 270 CDI was generally well-received by automotive critics, who praised its fuel efficiency, refined ride, and strong torque output. It was seen as a practical and sensible choice for buyers seeking a comfortable and economical luxury sedan. Compared to its competitors, such as the BMW 525d and Audi A6 2.5 TDI, the E 270 CDI offered a compelling combination of performance, economy, and build quality. Fuel economy was a key selling point, with the E 270 CDI achieving around 34.1 US mpg in combined driving. Reliability was generally good, although some owners reported issues with the common-rail injection system over time.
Legacy
The Mercedes-Benz E 270 CDI represents an important step in the evolution of diesel technology. The OM 612 engine proved to be a durable and reliable powerplant, and many examples are still on the road today. While the common-rail injection system can require maintenance, the engine is generally considered to be robust and long-lasting. In the used car market, the E 270 CDI remains a popular choice for buyers seeking a comfortable, economical, and well-built luxury sedan. Its blend of performance, efficiency, and refinement has ensured its enduring appeal.
