The Mercedes-Benz GLA 45 AMG (internally designated H247) represents the high-performance variant of the second-generation GLA compact SUV, produced from February 2020 through 2023. Positioned as the flagship model within the GLA range, it aimed to deliver exhilarating performance in a relatively small package, competing with rivals like the Audi RS Q3 and BMW X2 M35i. This model marked a significant step up in power and handling compared to the standard GLA models, leveraging technology derived from Mercedes-AMG’s experience in motorsports. The GLA 45 AMG was exclusively offered with a turbocharged four-cylinder engine, a dual-clutch transmission, and a sophisticated all-wheel-drive system.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLA |
| Generation | GLA (H247) |
| Type (Engine) | AMG GLA 45 (387 Hp) 4MATIC+ DCT |
| Start of production | February, 2020 |
| End of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (combined NEDC) | 9.1-9.2 l/100 km (25.8 – 25.6 US mpg, 31 – 30.7 UK mpg, 11 – 10.9 km/l) |
| CO2 emissions (NEDC) | 209-211 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.4 sec |
| Acceleration 0 – 62 mph | 4.4 sec |
| Acceleration 0 – 60 mph | 4.2 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Power | 387 Hp @ 6500 rpm |
| Power per litre | 194.4 Hp/l |
| Torque | 480 Nm @ 4750-5000 rpm (354.03 lb.-ft. @ 4750-5000 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 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Wheelbase | 2729 mm (107.44 in.) |
| Drivetrain Architecture | All-wheel drive (4×4) with permanent four-wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission AMG SPEEDSHIFT DCT |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 350 mm |
| Rear brakes | Ventilated discs, 330 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Wheel rims size | 19″ |
Powertrain & Engine Architecture
The heart of the GLA 45 AMG is the M139 engine, a 2.0-liter turbocharged inline-four. This engine is notable for its unique design, featuring the turbocharger and exhaust manifold switched to the front of the engine, a configuration typically found in larger displacement engines. This layout allows for improved exhaust flow and reduced turbo lag. The M139 utilizes direct fuel injection and a twin-scroll turbocharger to produce 387 horsepower at 6,500 rpm and 354 lb-ft of torque between 4,750 and 5,000 rpm. The engine also incorporates features like plasma-sprayed cylinder linings (NANOSLIDE) to reduce friction and improve durability. The engine is paired with an 8-speed AMG SPEEDSHIFT DCT dual-clutch transmission, which provides rapid gear changes and enhances the driving experience. This transmission features selectable drive modes, allowing the driver to adjust the shift points and responsiveness.
Driving Characteristics
The GLA 45 AMG delivers a significantly more engaging driving experience than the standard GLA models. The combination of the powerful engine, quick-shifting transmission, and all-wheel-drive system results in impressive acceleration and handling. The 4MATIC+ all-wheel-drive system is fully variable, allowing it to seamlessly distribute torque between the front and rear axles for optimal traction. In practice, the GLA 45 AMG feels nimble and responsive, with minimal body roll in corners. While the ride quality is firmer than the standard GLA, it remains reasonably comfortable for everyday driving. The dual-clutch transmission provides incredibly fast shifts, especially in Sport+ mode, contributing to the car’s overall performance feel. Compared to other AMG models, the GLA 45 offers a more accessible and manageable performance experience due to its smaller size and lighter weight.
Equipment & Trim Levels
The GLA 45 AMG came standard with a comprehensive list of features, including AMG-specific styling elements, such as a unique front grille, aggressive body kit, and quad exhaust outlets. Inside, the cabin featured sport seats upholstered in Artico leather and Dinamica microfiber, along with AMG-branded steering wheel and pedals. Standard technology included a 10.25-inch touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, a digital instrument cluster, and a premium sound system. Optional extras included a panoramic sunroof, head-up display, and advanced driver-assistance systems like adaptive cruise control and lane-keeping assist. The interior trim options allowed for some personalization, with choices in aluminum or carbon fiber accents.
Chassis & Braking
The GLA 45 AMG features a specially tuned chassis designed to handle the increased power and performance. The suspension utilizes independent McPherson struts at the front and a multi-link setup at the rear, with stiffer springs and dampers compared to the standard GLA. The braking system consists of ventilated discs on all four wheels, with larger rotors (350mm front, 330mm rear) and upgraded calipers for improved stopping power. The AMG braking system provides consistent and reliable performance, even under demanding driving conditions. The steering is precise and well-weighted, providing good feedback to the driver.
Market Reception & Comparison
The GLA 45 AMG was generally well-received by automotive critics, who praised its performance, handling, and overall driving experience. However, some reviewers noted that the ride quality could be firm and that the engine, while powerful, lacked the character of some larger AMG engines. Compared to the standard GLA models, the 45 AMG offered a substantial performance upgrade, but at a significantly higher price point. Fuel economy was also lower, reflecting the increased power output. Against its rivals, the GLA 45 AMG offered a compelling combination of performance, practicality, and technology, making it a popular choice for enthusiasts seeking a high-performance compact SUV.
Legacy
The M139 engine, first introduced in the GLA 45 AMG, has proven to be a robust and reliable powertrain. While some early models experienced minor software glitches, these were generally addressed through software updates. The GLA 45 AMG has maintained a relatively strong resale value in the used car market, reflecting its performance capabilities and AMG badge appeal. The model helped establish the GLA as a desirable entry point into the Mercedes-AMG lineup, and its success paved the way for future high-performance variants of the GLA.
