The Mercedes-Benz W124 E 300 Turbodiesel Automatic, produced from August 1993 to June 1995, represents a compelling blend of luxury, efficiency, and robust engineering within the iconic W124 series. Positioned as a mid-range offering in the E-Class lineup, it catered to buyers seeking the refinement of a Mercedes-Benz with the fuel economy and durability of a diesel engine, paired with the convenience of an automatic transmission. This variant occupied a space between the more affordable, naturally aspirated diesel models and the higher-performance gasoline-powered E 320. It was primarily sold in Europe, where diesel engines enjoyed significant popularity due to favorable taxation and fuel costs, though a limited number were imported to the United States.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class (W124) |
| Type (Engine) | E 300 Turbodiesel (147 Hp) Automatic |
| Start of production | August, 1993 |
| End of production | June, 1995 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 9.3 l/100 km (25.3 US mpg) |
| Fuel consumption (extra urban) | 6.2 l/100 km (37.9 US mpg) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.9 sec |
| Acceleration 0 – 62 mph | 10.9 sec |
| Acceleration 0 – 60 mph | 10.4 sec |
| Maximum speed | 202 km/h (125.52 mph) |
| Weight-to-power ratio | 10.1 kg/Hp |
| Weight-to-torque ratio | 5.5 kg/Nm |
| Power | 147 Hp @ 4600 rpm |
| Power per litre | 49.1 Hp/l |
| Torque | 273 Nm @ 2400 rpm (201.35 lb.-ft. @ 2400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 603 D 30 A / 603.960 |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 87 mm (3.43 in.) |
| Piston Stroke | 84 mm (3.31 in.) |
| Compression ratio | 22:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Precombustion chamber injection |
| Engine aspiration | Turbocharger |
| Valvetrain | SOHC |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1490 kg (3284.89 lbs.) |
| Max. weight | 2050 kg (4519.48 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 520 l (18.36 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4740 mm (186.61 in.) |
| Width | 1740 mm (68.5 in.) |
| Height | 1430 mm (56.3 in.) |
| Wheelbase | 2800 mm (110.24 in.) |
| Front track | 1501 mm (59.09 in.) |
| Rear (Back) track | 1491 mm (58.7 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
| Front suspension | Wishbone |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | Front wheel tires: 195/65 R15Rear wheel tires: 195/65 R15 |
| Wheel rims size | Front wheel rims: 6.5J x 15Rear wheel rims: 6.5J x 15 |
Powertrain & Engine Architecture
The heart of the E 300 Turbodiesel is the OM 603 D 30 A inline-six cylinder diesel engine, displacing 2,996 cc (182.83 cubic inches). This engine utilizes precombustion chamber injection, a system common in Mercedes-Benz diesels of the era, known for its relatively quiet operation and good combustion efficiency. A turbocharger, coupled with an intercooler, significantly boosts power output to 147 horsepower at 4,600 rpm and 273 Nm (201.35 lb-ft) of torque at 2400 rpm. The engine features a single overhead camshaft (SOHC) valvetrain with two valves per cylinder. The automatic transmission is a four-speed unit, designed to provide smooth and comfortable shifting. This transmission was not known for its sportiness, prioritizing refinement and ease of use over rapid gear changes.
Driving Characteristics
The E 300 Turbodiesel Automatic offers a distinctly different driving experience compared to its gasoline-powered siblings or even the manual diesel variants. While not a performance car, the turbocharger provides a useful surge of power for overtaking and highway cruising. The automatic transmission, while smooth, does result in some power loss compared to a manual gearbox. Acceleration from 0 to 60 mph takes approximately 10.4 seconds, and the top speed is around 125.52 mph. The emphasis is on relaxed, effortless driving, with the engine delivering strong torque at low to mid-range revs. The gear ratios are optimized for fuel efficiency and comfortable cruising rather than outright acceleration.
Equipment & Trim Levels
The E 300 Turbodiesel Automatic typically came equipped with a respectable level of standard features for its time. These included power windows, central locking, a sunroof (often optional), and a basic audio system. Interior upholstery was usually cloth, with leather being an optional upgrade. The dashboard layout is typical of the W124, characterized by its functional design and high-quality materials. Optional extras included automatic climate control, heated seats, and upgraded audio systems. The trim level generally fell in the mid-range, offering a good balance of comfort and features without the full luxury appointments of the E 320 or other higher-spec models.
Chassis & Braking
The W124 chassis is renowned for its robust construction and excellent ride quality. The E 300 Turbodiesel utilizes a wishbone front suspension and an independent multi-link rear suspension, providing a comfortable and controlled ride. Braking is handled by ventilated discs at the front and solid discs at the rear. Anti-lock braking system (ABS) was standard, enhancing safety. The steering is a recirculating ball system with hydraulic power assistance, offering a good balance of feel and ease of use. Stabilizer bars are fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The E 300 Turbodiesel Automatic was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and build quality. However, some criticized its relatively slow acceleration compared to gasoline-powered models. Compared to the naturally aspirated diesel variants, the E 300 Turbodiesel offered a significant performance boost. Against the E 320, it provided a more economical option, albeit with less power. Fuel economy was a major selling point, with the E 300 Turbodiesel achieving around 25.3 US mpg in the city and 37.9 US mpg on the highway. Reliability was also a strong suit, with the OM 603 engine being known for its longevity.
Legacy
The Mercedes-Benz W124 E 300 Turbodiesel Automatic has earned a reputation as a durable and reliable classic car. The OM 603 engine is highly regarded for its robustness and longevity, and well-maintained examples can still provide years of reliable service. In the used car market, these vehicles are sought after by enthusiasts who appreciate their classic styling, comfortable ride, and fuel efficiency. While maintenance can be more expensive than for more modern vehicles, the E 300 Turbodiesel remains a popular choice for those seeking a well-built and refined classic Mercedes-Benz.
