The Mercedes-Benz GLA 45 AMG, produced from July 2015 to 2017 as part of the X156 GLA generation, represented the high-performance variant of the compact GLA SUV. Positioned as the flagship model within the GLA lineup, it offered a significant performance upgrade over the standard GLA 250 and GLA 200 models. This variant aimed to deliver a blend of everyday practicality with exhilarating performance, appealing to enthusiasts seeking a sporty driving experience in a smaller package. The GLA 45 AMG distinguished itself through its potent turbocharged engine, upgraded braking and suspension systems, and aggressive styling cues.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLA |
| Generation | GLA (X156) |
| Type | AMG GLA 45 (381 Hp) 4MATIC AMG SPEEDSHIFT DCT |
| Start of production | July, 2015 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 9.6 l/100 km (24.5 US mpg, 29.4 UK mpg, 10.4 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| CO2 emissions (NEDC) | 172 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), Electronically limited |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 4 kg/Hp, 252.3 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 314.6 Nm/tonne |
| Power | 381 Hp @ 6000 rpm |
| Power per litre | 191.4 Hp/l |
| Torque | 475 Nm @ 2250-5000 rpm (350.34 lb.-ft. @ 2250-5000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | M 133.980 |
| 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 | 8.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Kerb Weight | 1510 kg (3328.98 lbs.) |
| Max. weight | 2105 kg (4640.73 lbs.) |
| Max load | 595 kg (1311.75 lbs.) |
| Trunk (boot) space – minimum | 421 l (14.87 cu. ft.) |
| Trunk (boot) space – maximum | 1235 l (43.61 cu. ft.) |
| Fuel tank capacity | 56 l (14.79 US gal | 12.32 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Length | 4445 mm (175 in.) |
| Width | 1805 mm (71.06 in.) |
| Width including mirrors | 2022 mm (79.61 in.) |
| Height | 1479 mm (58.23 in.) |
| Wheelbase | 2699 mm (106.26 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle | 11.84 m (38.85 ft.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives front wheels, rear wheels driven by clutch. |
| Number of gears and type of gearbox | 7 gears, automatic transmission AMG SPEEDSHIFT DCT |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Wishbone, Transverse stabilizer, Trailing arm |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 235/45 R19; 235/40 R20 |
| Wheel rims size | 8J x 19; 8J x 20 |
INTRODUCTION
The Mercedes-Benz GLA 45 AMG, built on the 1HX0/A3 platform, debuted in 2015 as the performance leader of the GLA range. It aimed to bring the AMG experience to a more accessible, compact segment. Unlike the standard GLA models focused on fuel efficiency and practicality, the 45 AMG prioritized driving dynamics and a sporty character. It was positioned above the GLA 250 and GLA 200, offering a substantial power increase and a more aggressive aesthetic. Production continued until 2017, before being superseded by the updated GLA 45 in the subsequent model year.
Powertrain & Engine Architecture
At the heart of the GLA 45 AMG lies the M133.980 2.0-liter inline-four cylinder engine. This engine is a highly-tuned unit, featuring direct fuel injection and a twin-scroll turbocharger. The twin-scroll design minimizes turbo lag, providing quicker response and improved low-end torque. The engine boasts a relatively high compression ratio of 8.6:1, contributing to its power output. The engine code ‘M133’ is known for its robust construction and ability to handle significant power increases with modifications. The engine is transversely mounted in the front of the vehicle. Power is transmitted to all four wheels via Mercedes-Benz’s 4MATIC all-wheel-drive system and the AMG SPEEDSHIFT DCT 7-speed dual-clutch transmission. This transmission offers incredibly fast and precise gear changes, enhancing the driving experience. The DCT transmission features multiple driving modes, including a manual mode for driver control, and a launch control function for optimal acceleration.
Driving Characteristics
The GLA 45 AMG delivers a noticeably different driving experience compared to its less powerful siblings. The 381 horsepower and 475 Nm (350 lb-ft) of torque provide brisk acceleration, with a 0-60 mph time of around 4.2 seconds. The dual-clutch transmission ensures seamless gear changes, and the 4MATIC system provides excellent traction in various conditions. While the engine is relatively small for the performance it delivers, the turbocharger provides a strong mid-range punch. The gear ratios are tuned for acceleration, with shorter gearing in the lower gears. Compared to the GLA 250, the 45 AMG offers significantly more power and a more responsive throttle. The ride is firmer due to the sport-tuned suspension, but still reasonably comfortable for daily driving. The steering is precise and well-weighted, providing good feedback to the driver.
Equipment & Trim Levels
The GLA 45 AMG came standard with a comprehensive list of features. Interior appointments included sport seats upholstered in a combination of leather and Dinamica microfiber, along with aluminum pedal pads and AMG floor mats. The dashboard featured unique AMG gauges and trim. Standard exterior features included AMG body styling, including a front splitter, side skirts, and a rear diffuser. Optional extras included a panoramic sunroof, upgraded audio system, and various driver assistance packages. The interior color schemes were typically darker, emphasizing the sporty character of the vehicle. Navigation and infotainment systems were also available as options, offering connectivity and convenience features.
Chassis & Braking
The GLA 45 AMG featured a sport-tuned suspension system designed to enhance handling and stability. The front suspension utilized McPherson struts with a coil spring and anti-roll bar, while the rear suspension employed a multi-link setup with a transverse stabilizer. Braking performance was significantly improved over the standard GLA models, with ventilated discs on all four wheels. The AMG braking system provided strong stopping power and resistance to fade. The chassis was reinforced to handle the increased power and torque, improving rigidity and responsiveness. The 4MATIC all-wheel-drive system intelligently distributed torque between the front and rear axles, optimizing traction and stability.
Market Reception & Comparison
The GLA 45 AMG received generally positive reviews from automotive critics. It was praised for its impressive performance, engaging driving dynamics, and relatively compact size. Some critics noted that the ride could be firm, but acknowledged that this was a trade-off for the improved handling. Compared to the GLA 250, the 45 AMG offered a substantial performance upgrade, but at a higher price point. The GLA 45 AMG competed with other high-performance compact SUVs, such as the Audi RS Q3 and the BMW X2 M35i. Fuel economy, while not a primary focus, was respectable for a vehicle of its performance, averaging around 31.8 US mpg in combined driving. Reliability reports have been generally positive, with the M133 engine proving to be relatively durable.
Legacy
The GLA 45 AMG established itself as a popular choice among enthusiasts seeking a high-performance compact SUV. The M133 engine became renowned for its power and tunability, and remains a sought-after powertrain in the used car market. While newer versions of the GLA 45 have been released with even more power and advanced technology, the original X156 model retains a loyal following. The GLA 45 AMG demonstrated Mercedes-Benz’s commitment to offering high-performance variants across its entire model range, and paved the way for future AMG models in the compact segment. Well-maintained examples continue to command a premium in the used car market, reflecting their performance capabilities and desirability.
