The Mercedes-Benz E 300de, a plug-in hybrid variant of the W213 E-Class, was produced from October 2018 to June 2020. Positioned as a premium offering within the E-Class range, it combined a diesel engine with an electric motor to deliver both efficiency and performance. This model was primarily aimed at the European market, where diesel-electric hybrids were gaining popularity due to tightening emissions regulations and incentives for eco-friendly vehicles. The “de” designation signifies “Diesel Electric,” clearly indicating its powertrain configuration. It represented Mercedes-Benz’s commitment to offering a diverse range of electrified options alongside traditional combustion engines.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class (W213) |
| Type (Engine) | E 300de (306 Hp) Plug-in Hybrid 9G-TRONIC |
| Start of production | October, 2018 |
| End of production | June, 2020 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – combined (NEDC) | 1.5 l/100 km |
| CO2 emissions (NEDC) | 41 g/km |
| Fuel Type | Diesel / electricity |
| Acceleration 0 – 100 km/h | 5.9 sec |
| Acceleration 0 – 62 mph | 5.9 sec |
| Acceleration 0 – 60 mph | 5.6 sec |
| Maximum speed | 250 km/h, Electronically limited (155.34 mph) |
| Emission standard | Euro 6d-TEMP-EVAP-ISC |
| Weight-to-power ratio | 6.5 kg/Hp, 154.2 Hp/tonne |
| Weight-to-torque ratio | 2.8 kg/Nm, 352.6 Nm/tonne |
| Gross battery capacity | 13.5 kWh |
| Net (usable) battery capacity | 9.4 kWh |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Inside the trunk |
| All-electric range (WLTP) | 43-47 km (26.72 – 29.2 mi) |
| All-electric range (NEDC) | 54 km (33.55 mi) |
| Average Energy consumption (NEDC) | 17.5 kWh/100 km (28.16 kWh/100 mi, 120 MPGe, 5.7 km/kWh, 3.6 mi/kWh) |
| Max speed (electric) | 130 km/h (80.78 mph) |
| Electric motor power | 122 Hp @ 2500 rpm (184 Nm @ 0-2000 rpm) |
| Electric motor Torque | 440 Nm @ 0-2000 rpm (324.53 lb.-ft. @ 0-2000 rpm) |
| Electric motor location | Between the combustion engine and the transmission |
| System power | 306 Hp @ 3500-4000 rpm |
| System torque | 700 Nm @ 1400 rpm (516.29 lb.-ft. @ 1400 rpm) |
| Power | 194 Hp @ 3800 rpm |
| Torque | 400 Nm @ 1600-2800 rpm (295.02 lb.-ft. @ 1600-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 654 D 20 SCR |
| Engine displacement | 1950 cm3 (119 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 92.3 mm (3.63 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Coolant | 11 l (11.62 US qt | 9.68 UK qt) |
| Kerb Weight | 1985 kg (4376.18 lbs.) |
| Max. weight | 2700 kg (5952.48 lbs.) |
| Max load | 715 kg (1576.31 lbs.) |
| Trunk (boot) space – minimum | 370 l (13.07 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Permitted trailer load with brakes (12%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4923 mm (193.82 in.) |
| Width | 1852 mm (72.91 in.) |
| Width including mirrors | 2065 mm (81.3 in.) |
| Height | 1468 mm (57.8 in.) |
| Wheelbase | 2939 mm (115.71 in.) |
| Front track | 1616 mm (63.62 in.) |
| Rear (Back) track | 1619 mm (63.74 in.) |
| Front overhang | 841 mm (33.11 in.) |
| Rear overhang | 1143 mm (45 in.) |
| Minimum turning circle (turning diameter) | 11.6 m (38.06 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) and electric motor drive the rear wheels of the car with the ability to work in full electric or mixed mode. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Double wishbone, Transverse stabilizer, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
INTRODUCTION
The Mercedes-Benz E 300de, built on the W213 E-Class platform, represented a significant step towards electrification in the luxury sedan segment. Introduced in late 2018, it combined a 2.0-liter four-cylinder diesel engine with an electric motor, offering a compelling blend of fuel efficiency, reduced emissions, and respectable performance. The W213 generation E-Class, launched in 2016, was known for its advanced technology, comfortable ride, and sophisticated interior. The E 300de specifically targeted buyers seeking a premium vehicle capable of short-distance all-electric driving, coupled with the long-range capability of a diesel engine. Production concluded in June 2020, as Mercedes-Benz continued to refine its plug-in hybrid offerings.
Powertrain & Engine Architecture
At the heart of the E 300de lies the OM 654 D 20 SCR, a 2.0-liter inline-four cylinder diesel engine. This engine, part of Mercedes-Benz’s modular engine family, features a turbocharger, intercooler, and direct injection technology. It produces 194 horsepower and 400 Nm (295 lb-ft) of torque. The engine utilizes a diesel particulate filter to minimize emissions, complying with stringent Euro 6d-TEMP-EVAP-ISC standards. The electric motor, positioned between the engine and the 9G-TRONIC nine-speed automatic transmission, contributes an additional 122 horsepower and 440 Nm (324 lb-ft) of torque. The combined system output reaches 306 horsepower and 700 Nm (516 lb-ft). The 9G-TRONIC transmission is specifically calibrated to work seamlessly with the electric motor, providing smooth and efficient gear changes. The 13.5 kWh lithium-ion battery pack is located under the trunk floor, reducing cargo space slightly. The battery supports both AC and DC charging, allowing for relatively quick replenishment.
Driving Characteristics
The E 300de offers a unique driving experience, blending the characteristics of both diesel and electric propulsion. In electric-only mode, the vehicle provides silent and smooth acceleration, suitable for urban commutes and short trips. The all-electric range, rated at 43-47 km (26.72-29.2 miles) WLTP, is sufficient for many daily commutes. When the diesel engine engages, the transition is nearly imperceptible, providing a surge of power for highway overtaking or more spirited driving. The 9G-TRONIC transmission’s wide gear ratios help to optimize fuel efficiency and maintain comfortable cruising speeds. Compared to the E 300 petrol variant, the E 300de offers superior torque and fuel economy. While not as sporty as the E 450 or AMG models, the E 300de delivers a refined and capable driving experience. The rear-wheel drive configuration provides balanced handling, and the optional air suspension enhances ride comfort.
Equipment & Trim Levels
The E 300de typically came well-equipped, reflecting its premium positioning. Standard features included Mercedes-Benz’s MBUX infotainment system with a large touchscreen display, leather upholstery, automatic climate control, and a suite of driver-assistance systems such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras included a panoramic sunroof, premium sound system, head-up display, and various interior trim options. The interior design mirrored that of other W213 E-Class models, with a focus on luxury and technology. The dashboard featured a dual-screen display, and the ambient lighting system allowed for customization. Trim levels varied slightly depending on the market, but generally offered a range of aesthetic and convenience upgrades.
Chassis & Braking
The E 300de utilizes a sophisticated chassis design, featuring a double-wishbone front suspension and an independent multi-link rear suspension. Air suspension was often included, providing adjustable ride height and enhanced comfort. The vehicle is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS), electronic stability control (ESC), and traction control are standard safety features. The steering system is a rack-and-pinion type with electric power assistance, offering precise and responsive handling. The E 300de’s weight, approximately 1985 kg (4376.18 lbs), is higher than that of the non-hybrid E-Class models due to the added weight of the battery pack and electric motor. However, the chassis is tuned to compensate for this, maintaining a balanced and controlled driving experience.
Market Reception & Comparison
The E 300de received generally positive reviews from automotive critics. It was praised for its fuel efficiency, smooth ride, and quiet operation in electric mode. The combination of diesel and electric power was seen as a practical solution for long-distance travel and urban commuting. Compared to the E 300 petrol variant, the E 300de offered significantly better fuel economy and lower emissions. However, some critics noted the reduced trunk space due to the battery pack. Against competitors such as the BMW 530e and Volvo XC60 Recharge, the E 300de offered a compelling combination of luxury, performance, and efficiency. Its diesel-electric powertrain was particularly well-suited to European driving conditions, where diesel fuel is readily available and long-distance travel is common.
Legacy
The Mercedes-Benz E 300de represents an important step in the evolution of the E-Class, demonstrating Mercedes-Benz’s commitment to hybrid technology. While production was relatively short-lived, the E 300de has established a reputation for reliability and efficiency. On the used car market, these models are sought after by buyers looking for a premium plug-in hybrid sedan. The OM 654 diesel engine is known for its durability, and the 9G-TRONIC transmission has proven to be a reliable unit. The battery pack’s longevity is a key consideration for potential buyers, but with proper maintenance, it can provide many years of service. The E 300de paved the way for subsequent generations of E-Class plug-in hybrids, further solidifying Mercedes-Benz’s position as a leader in electrified mobility.
