The Mercedes-Benz E 450d 4MATIC T-modell (S214), introduced in 2024, represents the diesel-powered, mild-hybrid wagon variant of the fifth-generation E-Class. Positioned as a premium offering within the E-Class range, it combines strong performance with the practicality of a station wagon body style. This model is primarily aimed at the European market, where wagons remain popular, but is also available in select other regions. The S214 generation builds upon the success of its predecessor (S213) with updated technology, refined styling, and improved efficiency. It slots above the E 300d in terms of power and performance, offering a more potent alternative for buyers prioritizing driving dynamics.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class T-modell (S214) |
| Type | E 450d (367 Hp) Mild Hybrid 4MATIC 9G-TRONIC |
| Start of production | 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 6.1-6.9 l/100 km (38.6 – 34.1 US mpg, 46.3 – 40.9 UK mpg, 16.4 – 14.5 km/l) |
| CO2 emissions (WLTP) | 161-181 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5 sec |
| Acceleration 0 – 62 mph | 5 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 250 km/h (155.34 mph) – Electronically limited |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 5.6 kg/Hp, 177.7 Hp/tonne |
| Weight-to-torque ratio | 2.8 kg/Nm, 363.2 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 23 Hp |
| Electric motor Torque | 205 Nm (151.2 lb.-ft.) |
| Electric motor location | Between the combustion engine and the transmission |
| Power | 367 Hp @ 4000 rpm |
| Torque | 750 Nm @ 1350-2800 rpm (553.17 lb.-ft. @ 1350-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 656.830 |
| Engine displacement | 2989 cm3 (182.4 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Kerb Weight | 2065 kg (4552.55 lbs.) |
| Max. weight | 2745 kg (6051.69 lbs.) |
| Max load | 680 kg (1499.14 lbs.) |
| Trunk (boot) space – minimum | 615 l (21.72 cu. ft.) |
| Trunk (boot) space – maximum | 1830 l (64.63 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| AdBlue tank | 24 l (6.34 US gal | 5.28 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 84 kg (185.19 lbs.) |
| Length | 4949 mm (194.84 in.) |
| Width | 1880 mm (74.02 in.) |
| Width including mirrors | 2065 mm (81.3 in.) |
| Height | 1469 mm (57.83 in.) |
| Wheelbase | 2961 mm (116.57 in.) |
| Front track | 1629 mm (64.13 in.) |
| Rear track | 1646 mm (64.8 in.) |
| Front overhang | 848 mm (33.39 in.) |
| Rear overhang | 1140 mm (44.88 in.) |
| Minimum turning circle | 12 m (39.37 ft.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels in mixed mode. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 9 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The E 450d is powered by the OM 656.830, a 3.0-liter inline-six cylinder diesel engine. This engine is a key component of Mercedes-Benz’s modular engine family, known for its efficiency and refinement. It utilizes a sophisticated diesel commonrail fuel injection system and a bi-turbocharger setup with an intercooler, delivering 367 horsepower at 4000 rpm and a substantial 750 Nm (553 lb-ft) of torque between 1350 and 2800 rpm. The engine features a high compression ratio of 15.5:1 and a DOHC valvetrain. The “d” designation signifies a diesel engine, and the mild-hybrid system adds a 48V electric motor, providing a boost of 23 hp and 205 Nm (151 lb-ft) of torque. This electric motor is integrated between the engine and the 9G-TRONIC automatic transmission. The mild-hybrid system enables features like extended coasting and smoother start/stop operation, contributing to improved fuel economy.
Driving Characteristics
The E 450d 4MATIC offers a compelling blend of performance and comfort. The 9G-TRONIC automatic transmission, with its nine forward gears, is tuned for smooth and efficient shifts. The wide gear ratio spread allows the engine to operate within its optimal torque band, providing strong acceleration in various driving situations. While not as overtly sporty as some of its gasoline-powered counterparts, the E 450d delivers a 0-60 mph time of around 4.8 seconds. The 4MATIC all-wheel-drive system ensures excellent traction, particularly in inclement weather. The mild-hybrid system contributes to a refined driving experience, with seamless transitions between electric and combustion power. Compared to the E 300d, the E 450d offers noticeably more power and torque, resulting in quicker acceleration and more effortless highway cruising.
Equipment & Trim Levels
The E 450d 4MATIC T-modell typically comes well-equipped as standard. Features include Mercedes-Benz’s MBUX infotainment system with a large touchscreen display, premium upholstery (often leather), automatic climate control, and a comprehensive suite of safety features. Optional extras include air suspension (providing a more comfortable ride), advanced driver-assistance systems (such as adaptive cruise control and lane-keeping assist), a panoramic sunroof, and upgraded audio systems. Interior trim options vary, allowing buyers to personalize the cabin to their preferences. The wagon’s rear seats can be folded down to expand cargo capacity, making it a versatile vehicle for families and those needing to transport larger items.
Chassis & Braking
The S214 E-Class wagon utilizes a sophisticated chassis design. The front suspension features an independent multi-link setup, while the rear also employs an independent multi-link configuration. Air suspension is available as an option, providing adjustable ride height and improved comfort. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. Standard safety features include ABS (Anti-lock Braking System), electronic stability control, and a range of airbags. The steering system is a rack-and-pinion setup with electric power assistance, offering precise and responsive handling.
Market Reception & Comparison
The E 450d 4MATIC T-modell has been generally well-received by automotive critics. It is praised for its powerful and efficient engine, comfortable ride, and spacious interior. The mild-hybrid system is seen as a positive addition, enhancing fuel economy and refinement. Compared to other E-Class variants, the E 450d offers a compelling alternative for those seeking a diesel-powered wagon with strong performance. Fuel economy is a key strength, with the E 450d achieving around 6.1-6.9 l/100 km (38.6-34.1 US mpg) in WLTP testing. Reliability is generally good, although diesel engines can be more complex than gasoline engines, potentially leading to higher maintenance costs over the long term.
Legacy
The OM 656 engine family, including the OM 656.830 found in the E 450d, is expected to be a durable and reliable powertrain. Mercedes-Benz has a strong track record with its diesel engines, and the OM 656 benefits from advanced technologies and robust construction. In the used car market, the E 450d 4MATIC T-modell is likely to hold its value well, particularly among buyers seeking a practical and efficient luxury wagon. The combination of performance, comfort, and fuel economy makes it a desirable option for those who prioritize these qualities.
