The Mercedes-Benz GLC Coupe (C254) AMG GLC 43 4MATIC, introduced in September 2023, represents a performance-oriented variant within the second generation of the GLC Coupe. Positioned as a mid-range performance model within the GLC lineup, it bridges the gap between the standard GLC Coupe trims and the more extreme AMG GLC 63 S. This vehicle combines a turbocharged inline-four engine with a mild hybrid system and a sophisticated all-wheel-drive platform, aiming to deliver a blend of sporty handling, everyday practicality, and enhanced fuel efficiency. It’s built on the Mercedes-Benz MRA2 platform, shared with other compact and mid-size models from the brand.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLC |
| Generation | GLC Coupe (C254) |
| Type | AMG GLC 43 (421 Hp) Mild Hybrid 4MATIC AMG SPEEDSHIFT MCT 9G |
| Start of production | September, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe, SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 9.8-10.2 l/100 km (24 – 23.1 US mpg, 28.8 – 27.7 UK mpg, 10.2 – 9.8 km/l) |
| CO2 emissions (WLTP) | 223-232 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.8 sec |
| Acceleration 0 – 62 mph | 4.8 sec |
| Acceleration 0 – 60 mph | 4.6 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Weight-to-power ratio | 4.6 kg/Hp, 219.3 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 260.4 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 14 Hp |
| Electric motor Torque | 150 Nm (110.63 lb.-ft.) |
| Electric motor location | Front, Longitudinal |
| Power | 421 Hp @ 6750 rpm |
| Torque | 500 Nm @ 5000 rpm (368.78 lb.-ft. @ 5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 139 |
| 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 | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection and Multi-port manifold injection |
| Engine aspiration | Electric Assisted Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Kerb Weight | 1920 kg (4232.88 lbs.) |
| Max. weight | 2535 kg (5588.72 lbs.) |
| Max load | 615 kg (1355.84 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) |
| Length | 4792 mm (188.66 in.) |
| Width | 1920 mm (75.59 in.) |
| Height | 1603 mm (63.11 in.) |
| Wheelbase | 2888 mm (113.7 in.) |
| Front track | 1666 mm (65.59 in.) |
| Rear (Back) track | 1666 mm (65.59 in.) |
| Minimum turning circle | 12.9 m (42.32 ft.) |
| Drivetrain Architecture | ICE and electric motor permanently drive all four wheels, mixed mode only. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 9 |
| Gearbox type | Automatic transmission AMG SPEEDSHIFT MCT |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 370×36 mm |
| Rear brakes | Ventilated discs, 360×26 mm |
| Assisting systems | ABS, 4-wheel steering |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Tires size (Front) | 235/55 R19 |
| Tires size (Rear) | 255/50 R19 |
| Wheel rims size (Front) | 8J x 19 |
| Wheel rims size (Rear) | 9J x 19 |
Powertrain & Engine Architecture
At the heart of the AMG GLC 43 lies the M139 engine, a 2.0-liter turbocharged inline-four cylinder engine. This engine is notable for its impressive specific output, producing 211.5 horsepower per liter. It utilizes a twin-scroll turbocharger, direct fuel injection, and multi-port fuel injection to optimize performance and efficiency. The engine is paired with a 48-volt mild hybrid system, which adds a small electric motor that provides a temporary power boost and enables features like coasting with the engine off. The AMG SPEEDSHIFT MCT 9G transmission is a nine-speed automatic that features a wet multi-plate clutch pack instead of a traditional torque converter, offering quicker and more direct shifts. This transmission is tuned for performance, with specific software and hardware upgrades to handle the engine’s output.
Driving Characteristics
The AMG GLC 43 delivers a noticeably sporty driving experience compared to the standard GLC Coupe models. The 421 horsepower and 500 Nm (368.78 lb-ft) of torque provide brisk acceleration, with a 0-60 mph time of around 4.6 seconds. The 9G transmission is well-tuned, providing quick and smooth gear changes. The AMG-tuned suspension and all-wheel-drive system contribute to confident handling and stability. While the engine is responsive, it doesn’t have the same raw power as the larger engines found in the GLC 63 S. The mild hybrid system provides a subtle boost during acceleration, but its primary benefit is improved fuel economy. The steering is precise and well-weighted, offering good feedback to the driver.
Equipment & Trim Levels
The AMG GLC 43 comes standard with a comprehensive list of features, including AMG-specific styling elements, such as a unique front grille, rear diffuser, and exhaust system. The interior features sport seats with AMG badging, a flat-bottom steering wheel, and aluminum paddle shifters. Standard technology includes the MBUX infotainment system with a large touchscreen display, a digital instrument cluster, and a premium sound system. Optional extras include features like a panoramic sunroof, advanced driver-assistance systems, and upgraded interior trim materials. Upholstery options typically include leather and synthetic leather combinations, with a range of color choices available.
Chassis & Braking
The AMG GLC 43 features a sport-tuned suspension system with adaptive dampers, allowing drivers to adjust the ride quality to their preferences. The front suspension utilizes a multi-link design with a stabilizer bar, while the rear suspension employs an independent multi-link setup. The braking system consists of ventilated discs on all four wheels, with larger rotors and upgraded calipers compared to the standard GLC Coupe. The AMG GLC 43 also includes ABS, electronic stability control, and other advanced safety features.
Market Reception & Comparison
The AMG GLC 43 was generally well-received by automotive critics, who praised its performance, handling, and luxurious interior. It was often compared to rivals such as the Porsche Macan and the BMW X3 M40i. While the GLC 43 offered a compelling combination of performance and practicality, some critics noted that it lacked the outright excitement of the more powerful GLC 63 S. Fuel economy was considered reasonable for a performance SUV, but not exceptional. Reliability reports have been generally positive, with few major issues reported.
Legacy
The M139 engine, as used in the AMG GLC 43, has proven to be a robust and reliable powertrain. The combination of turbocharging, direct injection, and mild hybrid technology provides a good balance of performance and efficiency. In the used car market, the AMG GLC 43 is considered a desirable option for buyers seeking a sporty and luxurious SUV. Its relatively high initial price and comprehensive features list have helped it maintain its value over time. The 9G transmission, while complex, has also proven to be durable and reliable with proper maintenance.
