The Mercedes-Benz C-Class Coupe (C205, facelifted in 2018) C 300 4MATIC, equipped with the 258 horsepower EQ Boost powertrain and 9G-TRONIC automatic transmission, represents a significant iteration of the popular luxury coupe. Produced from 2019 through 2020, this variant occupied a mid-to-upper position within the C-Class Coupe lineup, offering a blend of performance, efficiency, and technology. It builds upon the foundation of the W205 C-Class platform, known for its refined driving dynamics and upscale interior, while incorporating Mercedes-Benz’s mild-hybrid technology for enhanced fuel economy and responsiveness.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class Coupe (C205, facelift 2018) |
| Type (Engine) | C 300 (258 Hp) EQ Boost 4MATIC 9G-TRONIC |
| Start of production | 2019 |
| End of production | 2020 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 8.6-8.9 l/100 km (27.4 – 26.4 US mpg) |
| Fuel consumption (extra urban) | 5.4-5.9 l/100 km (43.6 – 39.9 US mpg) |
| Fuel consumption (combined) | 6.5-7 l/100 km (36.2 – 33.6 US mpg) |
| CO2 emissions | 150-160 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.3 sec |
| Acceleration 0 – 62 mph | 6.3 sec |
| Acceleration 0 – 60 mph | 6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-TEMP-EVAP-ISC |
| Weight-to-power ratio | 6.2 kg/Hp |
| Weight-to-torque ratio | 4.3 kg/Nm |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 14 Hp |
| Power | 258 Hp |
| Torque | 370 Nm @ 1800-4000 rpm (272.9 lb.-ft. @ 1800-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 264.920 |
| Engine displacement | 1991 cm3 (121.5 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 10.5:1 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Kerb Weight | 1605 kg (3538.42 lbs.) |
| Max. weight | 2175 kg (4795.05 lbs.) |
| Max load | 570 kg (1256.63 lbs.) |
| Trunk (boot) space | 380 l (13.42 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Permitted trailer load (braked) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load (unbraked) | 750 kg (1653.47 lbs.) |
| Length | 4686 mm (184.49 in.) |
| Width | 1810 mm (71.26 in.) |
| Width (with mirrors) | 2016 mm (79.37 in.) |
| Height | 1405 mm (55.31 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1567 mm (61.69 in.) |
| Rear track | 1551 mm (61.06 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle | 11.45 m (37.57 ft.) |
| Front suspension | Independent multi-link, Transverse stabilizer |
| Rear suspension | Independent multi-link, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Gearbox | 9 gears, automatic transmission G-TRONIC |
Powertrain & Engine Architecture
At the heart of the C 300 4MATIC lies the M 264.920 2.0-liter inline-four cylinder engine. This engine is a key component of Mercedes-Benz’s modular engine family, known for its efficiency and power density. It utilizes direct fuel injection, a twin-scroll turbocharger, and an intercooler to deliver 258 horsepower and 370 Nm (272.9 lb.-ft.) of torque. The “EQ Boost” system adds a 48-volt mild-hybrid component, integrating a belt-driven starter-generator. This system allows for functions like extended coasting, regenerative braking, and a smoother start/stop operation, contributing to improved fuel economy. The 9G-TRONIC nine-speed automatic transmission is standard, providing smooth and efficient gear changes. The transmission is tuned to work seamlessly with the EQ Boost system, optimizing power delivery and responsiveness.
Driving Characteristics
The C 300 4MATIC offers a refined and comfortable driving experience. The EQ Boost system provides an immediate boost in torque, enhancing acceleration from a standstill and during overtaking maneuvers. While not as overtly sporty as some of its competitors, the C 300 delivers ample power for everyday driving and spirited excursions. The 9G-TRONIC transmission contributes to a relaxed highway cruising experience, with well-spaced gear ratios. Compared to the C 300’s manual transmission counterparts, the automatic offers greater convenience and ease of use, particularly in urban environments. It also provides slightly quicker acceleration due to optimized shift points. Compared to the more powerful C 43 AMG variant, the C 300 prioritizes fuel efficiency and comfort over outright performance.
Equipment & Trim Levels
The C 300 4MATIC Coupe came well-equipped as standard. Key features included MB-Tex upholstery, automatic climate control, a 7-inch central display screen, and a suite of safety features like adaptive brake assist and collision prevention assist. Optional extras included leather upholstery, a larger 10.25-inch central display screen, a premium sound system, and a panoramic sunroof. The interior design emphasized luxury and modernity, with high-quality materials and a driver-focused layout. Trim levels offered varying degrees of customization, allowing buyers to tailor the vehicle to their preferences.
Chassis & Braking
The C-Class Coupe features a sophisticated chassis design, with an independent multi-link suspension at both the front and rear. This setup provides a comfortable ride while maintaining good handling characteristics. The 4MATIC all-wheel-drive system ensures optimal traction in various weather conditions. The C 300 4MATIC is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) are standard safety features.
Market Reception & Comparison
The C 300 4MATIC Coupe was generally well-received by automotive critics. It was praised for its refined driving dynamics, luxurious interior, and advanced technology. The EQ Boost system was noted as a significant improvement in terms of fuel efficiency and responsiveness. Compared to rivals like the BMW 4 Series Coupe and Audi A5 Coupe, the C 300 offered a compelling combination of performance, luxury, and value. Fuel economy figures were competitive within its segment, and the mild-hybrid system helped to reduce emissions.
Legacy
The M 264 engine family, including the version found in the C 300 4MATIC, has proven to be relatively reliable. While some early models experienced minor issues with the EQ Boost system, these were generally addressed through software updates. On the used car market, the C 300 4MATIC Coupe remains a desirable option for buyers seeking a stylish and well-equipped luxury coupe. Its combination of performance, efficiency, and technology continues to appeal to a wide range of drivers. Regular maintenance, including oil changes and adherence to the manufacturer’s recommended service intervals, is crucial for ensuring the long-term reliability of this powertrain.
