The Mercedes-Benz GLC 300 4MATIC, introduced in June 2022 as part of the X254 generation, represents a significant evolution in the compact luxury SUV segment. Positioned as a mid-range offering within the GLC lineup, it bridges the gap between the entry-level GLC 260 and the performance-oriented AMG variants. This model incorporates a mild hybrid system, enhancing both fuel efficiency and driving experience. The X254 generation marked a substantial redesign over its predecessor (X253), focusing on interior refinement, technological advancements, and a more sophisticated driving dynamic. It’s a key model for Mercedes-Benz in the North American market, competing directly with vehicles like the BMW X3, Audi Q5, and Acura RDX.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLC |
| Generation | GLC SUV (X254) |
| Type | GLC 300 (258 Hp) Mild Hybrid 4MATIC 9G-TRONIC |
| Start of production | June, 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 7.3-8.2 l/100 km (32.2 – 28.7 US mpg, 38.7 – 34.4 UK mpg, 13.7 – 12.2 km/l) |
| CO2 emissions (WLTP) | 167-186 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.2 sec |
| Acceleration 0 – 62 mph | 6.2 sec |
| Acceleration 0 – 60 mph | 5.9 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Weight-to-power ratio | 7.2 kg/Hp, 139.5 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 216.2 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 | 258 Hp @ 5800 rpm |
| Torque | 400 Nm @ 2000-3200 rpm (295.02 lb.-ft. @ 2000-3200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 254 |
| Engine displacement | 1999 cm3 (121.99 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| 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 | 1850 kg (4078.55 lbs.) |
| Max. weight | 2510 kg (5533.6 lbs.) |
| Max load | 660 kg (1455.05 lbs.) |
| Trunk (boot) space – minimum | 620 l (21.9 cu. ft.) |
| Trunk (boot) space – maximum | 1640 l (57.92 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Permitted trailer load with brakes (12%) | 2400 kg (5291.09 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4716 mm (185.67 in.) |
| Width | 1890 mm (74.41 in.) |
| Width including mirrors | 2075 mm (81.69 in.) |
| Height | 1640 mm (64.57 in.) |
| Wheelbase | 2888 mm (113.7 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear (Back) track | 1640 mm (64.57 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 11 m (36.09 ft.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels, operating 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 |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS, 4-wheel steering |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Tires size | 235/60 R18 |
| Wheel rims size | 8J x 18 |
Powertrain & Engine Architecture
The GLC 300 4MATIC utilizes the M 254 engine, a 2.0-liter turbocharged inline-four cylinder gasoline engine. This engine benefits from a 48-volt mild hybrid system, incorporating 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 (approximately 20 horsepower and 147 lb-ft of torque). The engine employs direct fuel injection and a twin-scroll turbocharger to deliver 258 horsepower at 5800 rpm and 295 lb-ft of torque between 2000 and 3200 rpm. The 9G-TRONIC nine-speed automatic transmission is standard, optimized for smooth shifting and efficiency. The transmission’s gear ratios are tuned to balance performance with fuel economy, providing quick acceleration while maintaining comfortable cruising speeds.
Driving Characteristics
The GLC 300 4MATIC offers a refined and comfortable driving experience. The mild hybrid system provides a nearly imperceptible boost during acceleration, contributing to a responsive feel. While not a sports SUV, the 0-60 mph time of around 5.9 seconds is respectable for the segment. The 9G-TRONIC transmission shifts smoothly and efficiently, and the 4MATIC all-wheel-drive system provides excellent traction in various conditions. Compared to higher-performance GLC models (like the AMG variants), the 300 prioritizes comfort and fuel efficiency over outright speed. Compared to the GLC 260, the 300 offers a noticeable increase in power and acceleration, making it a more engaging driving experience.
Equipment & Trim Levels
The GLC 300 4MATIC comes standard with a generous array of features, including Mercedes-Benz User Experience (MBUX) infotainment system with a 12.3-inch touchscreen display, a digital instrument cluster, heated front seats, and a panoramic sunroof. Upholstery typically consists of MB-Tex synthetic leather, with genuine leather available as an option. Optional extras include advanced driver-assistance systems (such as adaptive cruise control and lane-keeping assist), premium audio systems, and various cosmetic enhancements. Trim levels often include options packages that bundle popular features together.
Chassis & Braking
The X254 GLC features a fully independent suspension system, utilizing multi-link setups at both the front and rear axles. This configuration provides a comfortable ride and good handling characteristics. The GLC 300 is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control are standard safety features. Available options include air suspension, which further enhances ride comfort and allows for adjustable ride height.
Market Reception & Comparison
The GLC 300 4MATIC has been well-received by automotive critics, praised for its comfortable ride, refined interior, and advanced technology. Fuel economy is competitive within the luxury SUV segment, with the mild hybrid system contributing to improved efficiency. Reliability has been generally good, although some owners have reported minor issues with the infotainment system. Compared to rivals like the BMW X3 and Audi Q5, the GLC 300 offers a more luxurious interior and a more comfortable ride, while the BMW X3 is often praised for its more engaging driving dynamics.
Legacy
The M 254 engine and 9G-TRONIC transmission combination has proven to be a reliable and durable powertrain. The mild hybrid technology introduced in the GLC 300 represents a significant step towards electrification for Mercedes-Benz. On the used car market, the 2022 and later X254 GLC 300 models hold their value well, due to their modern features, comfortable ride, and strong brand reputation. The integration of the 48V system is expected to contribute to long-term reliability, as it reduces the load on the internal combustion engine and extends the life of components like the starter motor and battery.
