The Mercedes-Benz E 450 Coupe (C238, facelift model produced from 2020-2023) represents a sophisticated blend of performance, luxury, and efficiency within the E-Class range. Positioned as a premium offering, it slotted above the E 350 and below the more potent AMG variants. This model year saw a significant facelift for the C238 coupe, bringing updated styling, enhanced technology, and the introduction of the EQ Boost mild-hybrid system. The E 450 Coupe aimed to deliver a grand touring experience with a focus on comfort and refined power, appealing to buyers seeking a luxurious two-door vehicle.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class Coupe (C238, facelift 2020) |
| Type | E 450 (362 Hp) EQ Boost 9G-TRONIC |
| Start of production | 2020 |
| End of production | 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 10.2 l/100 km (23.1 US mpg) |
| Fuel consumption (extra urban) | 7.6 l/100 km (30.9 US mpg) |
| Fuel consumption (combined) | 9 l/100 km (26.1 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Gross battery capacity | 0.9 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 21 Hp |
| Electric motor Torque | 250 Nm (184.39 lb.-ft.) |
| Electric motor location | Between the combustion engine and the transmission |
| Power | 362 Hp @ 5500-6100 rpm |
| Torque | 500 Nm @ 1600-4500 rpm (368.78 lb.-ft. @ 1600-4500 rpm) |
| Maximum engine speed | 6800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 256.930 |
| Engine displacement | 2999 cm3 (183.01 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92.4 mm (3.64 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 9.5 l (10.04 US qt | 8.36 UK qt) |
| Coolant capacity | 13 l (13.74 US qt | 11.44 UK qt) |
| Trunk (boot) space (minimum) | 405 l (14.3 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Length | 4835 mm (190.35 in.) |
| Width | 1857 mm (73.11 in.) |
| Width including mirrors | 2055 mm (80.91 in.) |
| Height | 1431 mm (56.34 in.) |
| Wheelbase | 2873 mm (113.11 in.) |
| Front track | 1598 mm (62.91 in.) |
| Rear track | 1605 mm (63.19 in.) |
| Front overhang | 850 mm (33.46 in.) |
| Rear overhang | 1112 mm (43.78 in.) |
| Minimum turning circle | 11.37 m (37.3 ft.) |
| Drivetrain | Rear wheel drive, MHEV |
| Number of gears | 9 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Coil spring, Independent multi-link suspension, Transverse stabilizer, Air Suspension (Optional) |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension (Optional) |
| Front brakes | Ventilated discs, 360 mm |
| Rear brakes | Ventilated discs, 360 mm |
| Tires size (Front) | 245/45 R18 |
| Tires size (Rear) | 245/40 R18 |
| Wheel rims size | 8J x 18 |
INTRODUCTION
The 2020-2023 Mercedes-Benz E 450 Coupe (C238) represents the culmination of the fourth-generation E-Class coupe. Built on the W213 E-Class platform, the C238 coupe offered a more sporting and stylish alternative to the sedan. The facelift introduced in 2020 brought significant updates, most notably the adoption of the MHEV system with the EQ Boost, enhancing both fuel efficiency and performance. This variant was positioned as a luxury performance coupe, appealing to buyers who desired a blend of comfort, technology, and engaging driving dynamics. It served as a bridge between the more comfort-oriented E 350 and the high-performance AMG E 53.
Powertrain & Engine Architecture
At the heart of the E 450 Coupe lies the M 256.930 3.0-liter inline-six cylinder engine. This engine is a marvel of modern engineering, featuring direct injection, a twin-scroll turbocharger, and a NANOSLIDE cylinder coating to reduce friction. The engine produces 362 horsepower at 5500-6100 rpm and 500 Nm (368.78 lb.-ft.) of torque between 1600-4500 rpm. What sets this engine apart is the integration of the 48-volt EQ Boost system. This system utilizes a compact electric motor integrated into the transmission, providing an additional 21 horsepower and 250 Nm (184.39 lb.-ft.) of torque during acceleration. The EQ Boost system enables features like gliding, where the engine shuts off during coasting, and a smoother start/stop function. The engine is paired with the 9G-TRONIC nine-speed automatic transmission, known for its smooth and efficient gear changes. This transmission is specifically tuned to work seamlessly with the EQ Boost system, optimizing power delivery and fuel economy.
Driving Characteristics
The E 450 Coupe delivers a refined and engaging driving experience. The combination of the inline-six engine and the EQ Boost system provides ample power for both highway cruising and spirited driving. Acceleration from 0 to 60 mph takes a brisk 5.2 seconds, and the electronically limited top speed is 210 km/h (130.49 mph). The 9G-TRONIC transmission offers quick and precise shifts, contributing to a seamless power delivery. Compared to the E 350, the E 450 offers noticeably more power and a more responsive feel. While not as aggressively tuned as the AMG variants, the E 450 provides a satisfying level of performance for a luxury coupe. The EQ Boost system subtly enhances the driving experience, providing an extra surge of power when needed and contributing to improved fuel efficiency. The steering is precise and well-weighted, offering a good connection to the road.
Equipment & Trim Levels
The E 450 Coupe came standard with a generous array of features, reflecting its premium positioning. Standard equipment included leather upholstery, heated front seats, a panoramic sunroof, a Burmester surround sound system, and the Mercedes-Benz User Experience (MBUX) infotainment system with a large touchscreen display. Optional extras included ventilated front seats, massaging seats, a head-up display, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. Interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize the cabin to their taste. The exterior styling was further enhanced by available options such as AMG body styling and larger alloy wheels.
Chassis & Braking
The E 450 Coupe features a sophisticated chassis designed to deliver a comfortable and controlled ride. The front suspension utilizes a multi-link setup with coil springs, while the rear suspension employs an independent multi-link spring suspension. Air suspension was available as an option, providing an even more refined ride quality and the ability to adjust the ride height. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. ABS (Anti-lock braking system) is standard, along with other electronic stability control systems. The coupe’s suspension tuning is geared towards comfort and stability, prioritizing a smooth ride over outright sportiness, although the optional air suspension can significantly alter this characteristic.
Market Reception & Comparison
The E 450 Coupe was generally well-received by automotive critics. Reviewers praised its refined engine, comfortable ride, and luxurious interior. The EQ Boost system was lauded for its ability to enhance both performance and fuel efficiency. Compared to the E 350, the E 450 offered a significant performance upgrade, while remaining more affordable and less aggressive than the AMG E 53. Fuel economy figures were respectable for a vehicle of its size and performance, with combined fuel consumption rated at 9 l/100 km (26.1 US mpg). Reliability reports have been generally positive, with the M 256 engine proving to be a robust and dependable unit.
Legacy
The Mercedes-Benz E 450 Coupe (C238) represents a high point in the evolution of the E-Class coupe. Its combination of luxury, performance, and technology has made it a desirable vehicle in the used car market. The M 256 engine, with its EQ Boost system, is considered a significant advancement in powertrain technology. While maintenance costs for a Mercedes-Benz are typically higher than those of more mainstream brands, the E 450 Coupe is generally considered to be a reliable vehicle, provided it has been properly maintained. Its elegant styling, comfortable interior, and engaging driving dynamics ensure that it will remain a sought-after vehicle for years to come.
