The Mercedes-Benz GLA 45 AMG, produced from January 2017 to October 2019 as part of the X156 facelift generation, represents the high-performance variant of the compact GLA SUV. Positioned at the top of the GLA lineup, it offered a significant performance upgrade over the standard models, targeting enthusiasts seeking a blend of practicality and exhilarating driving dynamics. This model year saw refinements to the original X156, with the GLA 45 AMG benefiting from updated styling and technology. It competed directly with performance-oriented compact SUVs like the Audi SQ5 and BMW X2 M35i.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLA |
| Generation | GLA (X156, facelift 2017) |
| Type | AMG GLA 45 (381 Hp) 4MATIC AMG SPEEDSHIFT DCT |
| Start of production | January, 2017 |
| End of production | October, 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9.6 l/100 km (24.5 US mpg, 29.4 UK mpg, 10.4 km/l) |
| Fuel consumption (extra urban) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption (combined) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| CO2 emissions | 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 | 4455 mm (175.39 in.) |
| Width | 1804 mm (71.02 in.) |
| Width including mirrors | 2022 mm (79.61 in.) |
| Height | 1479 mm (58.23 in.) |
| Wheelbase | 2699 mm (106.26 in.) |
| Drag coefficient (Cd) | 0.33 |
| 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 | 7 |
| Gearbox type | 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 |
| Tires size | 235/45 R19; 235/40 R20 |
| Wheel rims size | 8J x 19; 8J x 20 |
INTRODUCTION
The GLA 45 AMG, launched in 2017 following the X156 facelift, was a significant offering in the burgeoning subcompact luxury SUV segment. Built on the 1HX0/A3 platform shared with other compact Mercedes-Benz models, the GLA 45 AMG distinguished itself through its potent engine and performance-tuned chassis. It aimed to deliver a more engaging driving experience than its competitors, while still providing the practicality and space expected of an SUV. The facelift brought subtle styling updates, improved interior materials, and enhanced technology features.
Powertrain & Engine Architecture
At the heart of the GLA 45 AMG lies the M133.980 2.0-liter turbocharged inline-four engine. This engine, a hallmark of Mercedes-AMG’s compact performance models, produced 381 horsepower at 6000 rpm and 350 lb-ft of torque between 2250 and 5000 rpm. The engine utilized direct fuel injection and a twin-scroll turbocharger, along with an intercooler, to maximize power output and minimize turbo lag. The engine code ‘133’ signifies its displacement in liters multiplied by 10. The engine’s high specific output (191.4 hp per liter) was achieved through a combination of advanced technologies and meticulous engineering. Power was delivered to all four wheels via Mercedes-Benz’s 4MATIC all-wheel-drive system and a seven-speed AMG SPEEDSHIFT DCT dual-clutch transmission. This transmission offered incredibly fast and precise gear changes, contributing to the car’s impressive acceleration.
Driving Characteristics
The GLA 45 AMG delivered a noticeably more aggressive driving experience compared to the standard GLA models. The dual-clutch transmission provided rapid shifts, and the all-wheel-drive system ensured excellent traction. While the 2.0-liter engine might seem small for an SUV, the substantial torque output and responsive turbocharger meant that the car felt quick and eager in most driving situations. Acceleration from 0 to 60 mph took approximately 4.2 seconds. The suspension was tuned for a firmer ride, providing better body control during cornering, but at the expense of some ride comfort. The steering was precise and well-weighted, offering good feedback to the driver. Compared to the manual transmission versions (not widely available in the US), the DCT offered smoother and faster shifts, though some purists might have preferred the engagement of a manual gearbox.
Equipment & Trim Levels
The GLA 45 AMG came standard with a comprehensive list of features, including sport seats upholstered in Artico leather and Dinamica microfiber, a flat-bottom steering wheel, aluminum pedal pads, and red contrast stitching throughout the interior. Standard technology included a 7-inch infotainment display, Bluetooth connectivity, and a rearview camera. Optional extras included a larger 8-inch display, navigation system, a premium sound system, and a panoramic sunroof. The interior design was generally sporty and modern, with a focus on driver engagement. The overall aesthetic was a step up from the standard GLA models, reflecting the AMG’s higher price point and performance focus.
Chassis & Braking
The GLA 45 AMG featured a sport-tuned suspension with stiffer springs and dampers compared to the standard GLA. The front suspension utilized McPherson struts, while the rear employed a multi-link setup. Larger ventilated brake discs were fitted at all four corners, providing ample stopping power. The braking system also included ABS, electronic brake-force distribution, and brake assist. The chassis was reinforced to handle the increased power and stresses of high-performance driving. While the rear brakes were ventilated discs, they were smaller than the front, reflecting the front-biased weight distribution of the vehicle.
Market Reception & Comparison
Critics generally praised the GLA 45 AMG for its impressive performance and engaging driving dynamics. However, some reviewers noted that the ride could be firm, and the interior, while well-appointed, wasn’t as luxurious as some of its competitors. Fuel economy was reasonable for a high-performance SUV, averaging around 31.8 US mpg in combined driving. Compared to the standard GLA 250, the 45 AMG offered a significant performance boost but came at a higher price. The 45 AMG also differed from other GLA variants, such as the GLA 220d, in terms of its engine and performance characteristics, targeting a different type of buyer – one prioritizing speed and handling over fuel efficiency.
Legacy
The GLA 45 AMG (X156) remains a popular choice in the used car market, appealing to buyers seeking a compact, high-performance SUV. The M133 engine, while known for its power, requires diligent maintenance, particularly regarding oil changes and cooling system upkeep. The dual-clutch transmission is generally reliable but can be expensive to repair if issues arise. Overall, the GLA 45 AMG represents a compelling blend of performance, practicality, and style, and continues to be a sought-after model among enthusiasts.
