The Mercedes-Benz GLC 220d 4MATIC Coupe (C254), launched in July 2023, represents the second generation of the GLC Coupe, blending the practicality of a compact SUV with the sleeker profile of a coupe. Positioned as a mid-range offering within the GLC Coupe lineup, it slots between the base GLC 200 and the performance-oriented AMG variants. This model is particularly significant for its integration of mild hybrid technology, aimed at improving fuel efficiency and reducing emissions while maintaining a refined driving experience. The C254 generation builds upon the success of the first-generation GLC Coupe (C253), offering enhanced technology, improved interior space, and updated styling.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLC |
| Generation | GLC Coupe (C254) |
| Type | GLC 220d (197 Hp) Mild Hybrid 4MATIC 9G-TRONIC |
| Start of production | July, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe, SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 5.1-5.8 l/100 km (46.1 – 40.6 US mpg, 55.4 – 48.7 UK mpg, 19.6 – 17.2 km/l) |
| CO2 emissions (WLTP) | 135-152 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.1 sec |
| Acceleration 0 – 62 mph | 8.1 sec |
| Acceleration 0 – 60 mph | 7.7 sec |
| Maximum speed | 225 km/h (139.81 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 10.3 kg/Hp, 97.5 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 217.8 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 23 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| Electric motor location | Between the combustion engine and the transmission |
| Power | 197 Hp @ 3600 rpm |
| Torque | 440 Nm @ 1800-2800 rpm (324.53 lb.-ft. @ 1800-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 654 M |
| Engine displacement | 1993 cm3 (121.62 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-Turbo, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 2020 kg (4453.34 lbs.) |
| Max. weight | 2550 kg (5621.79 lbs.) |
| Max load | 530 kg (1168.45 lbs.) |
| Trunk (boot) space – minimum | 545 l (19.25 cu. ft.) |
| Trunk (boot) space – maximum | 1490 l (52.62 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Permitted trailer load with brakes (12%) | 2500 kg (5511.56 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4769 mm (187.76 in.) |
| Width | 1920 mm (75.59 in.) |
| Width including mirrors | 2076 mm (81.73 in.) |
| Height | 1606 mm (63.23 in.) |
| Wheelbase | 2888 mm (113.7 in.) |
| Front track | 1628 mm (64.09 in.) |
| Rear (Back) track | 1642 mm (64.65 in.) |
| Front overhang | 848 mm (33.39 in.) |
| Rear overhang | 1033 mm (40.67 in.) |
| Ride height (ground clearance) | 158 mm (6.22 in.) |
| Minimum turning circle (turning diameter) | 10.9 m (35.76 ft.) |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front wheel tires | 235/55 R19 |
| Rear wheel tires | 255/50 R19 |
| Front wheel rims | 8J x 19 |
| Rear wheel rims | 9J x 19 |
Powertrain & Engine Architecture
The GLC 220d Coupe is powered by the OM 654 M, a 2.0-liter inline-four cylinder diesel engine. This engine is a cornerstone of Mercedes-Benz’s modern diesel offerings, known for its efficiency and refinement. It utilizes a twin-turbocharger setup with variable geometry turbines (VGT) and an intercooler, delivering 197 horsepower at 3600 rpm and 440 Nm (324.53 lb-ft) of torque between 1800 and 2800 rpm. The engine employs a diesel commonrail direct injection system, ensuring precise fuel delivery for optimal combustion. A key feature is the 48-volt mild hybrid system. This system incorporates a 48V lithium-ion battery and a belt-driven starter-generator (BSG). The BSG allows for functions like extended start-stop operation, regenerative braking, and a small power boost during acceleration. The engine is longitudinally mounted, driving all four wheels through the 9G-TRONIC nine-speed automatic transmission.
Driving Characteristics
The 9G-TRONIC transmission is a crucial component of the driving experience. Its nine forward gears allow for a wide ratio spread, optimizing fuel economy at cruising speeds and providing quick responses when accelerating. While not as overtly sporty as some of its AMG counterparts, the GLC 220d Coupe offers a comfortable and capable driving experience. The mild hybrid system provides a subtle but noticeable boost during acceleration, smoothing out power delivery. The 0-60 mph time of around 7.7 seconds is respectable for a diesel-powered SUV coupe. Compared to higher-output GLC variants, the 220d prioritizes fuel efficiency and relaxed cruising over outright performance. The automatic transmission is well-tuned for everyday driving, offering smooth shifts and predictable behavior.
Equipment & Trim Levels
The GLC 220d Coupe comes standard with a comprehensive suite of features, including Mercedes-Benz’s MBUX infotainment system with a large touchscreen display, Apple CarPlay and Android Auto integration, and a suite of driver-assistance systems such as automatic emergency braking, lane-keeping assist, and adaptive cruise control. Interior upholstery typically consists of high-quality synthetic leather (Artico) or genuine leather options. Standard trim includes aluminum accents and ambient lighting. Optional extras include a panoramic sunroof, premium Burmester sound system, head-up display, and various driver-assistance packages. The Coupe body style generally receives sportier interior trim options compared to the standard GLC SUV.
Chassis & Braking
The GLC 220d Coupe utilizes a four-wheel independent suspension system, providing a comfortable ride and good handling characteristics. The front suspension features multi-link struts, while the rear employs a multi-link setup. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. The 4MATIC all-wheel-drive system is full-time, distributing torque between the front and rear axles as needed for optimal traction. The suspension is tuned to balance comfort and handling, leaning towards the comfort side given the vehicle’s positioning. Stabilizer bars are present on both axles to reduce body roll during cornering.
Market Reception & Comparison
The GLC 220d Coupe has been well-received in the market, particularly in Europe, where diesel engines remain popular. Critics have praised its fuel efficiency, comfortable ride, and refined interior. Compared to the gasoline-powered GLC 200, the 220d offers significantly better fuel economy and more torque, making it a more practical choice for long-distance driving. However, the 220d is slightly slower in acceleration. Compared to the higher-performance AMG variants, the 220d offers a more affordable entry point into the GLC Coupe range, sacrificing some performance for improved efficiency and a lower price tag. Reliability has been generally good, with the OM 654 engine proving to be a robust and dependable unit.
Legacy
The OM 654 engine, as used in the GLC 220d Coupe, is expected to have good long-term reliability. Mercedes-Benz has a strong track record with its diesel engines, and the OM 654 benefits from modern technologies designed to improve durability and reduce emissions. On the used car market, the GLC 220d Coupe is likely to hold its value well, particularly examples with a full service history and low mileage. The integration of mild hybrid technology adds to its appeal, as it represents a step towards more sustainable motoring. The C254 generation GLC Coupe, and specifically the 220d variant, represents a compelling blend of luxury, practicality, and efficiency in the compact SUV coupe segment.
