The new Mercedes-Benz GLA 45 AMG is engineered for those who crave exhilarating performance without sacrificing everyday practicality. Whether it’s conquering the racetrack or embarking on a weekend adventure, the Mercedes-Benz GLA 45 AMG stands ready to deliver an unmatched driving experience. This nimble all-rounder packs a punch that can rival even dedicated sports cars, thanks to its groundbreaking 2.0-liter engine – the most potent series-produced four-cylinder turbo engine globally. Generating a staggering 382 horsepower, this innovative powerhouse surpasses its predecessor and redefines performance benchmarks in its class. Complementing this immense power is the active, fully-variable AMG Performance 4MATIC+ all-wheel drive system, intelligently distributing power with AMG TORQUE CONTROL for superior traction in all conditions. This advanced system features a newly designed rear axle differential with two multi-disc clutches, allowing for selective power delivery to each rear wheel. The AMG SPEEDSHIFT DCT 8-speed dual-clutch transmission ensures lightning-fast gear changes, seamlessly channeling the engine’s might to the wheels for an adrenaline-pumping ride.
Tobias Moers, Chairman of the Board of Management of Mercedes-AMG GmbH, stated, “The second generation of our very successful compact sports model is now complete. The GLA portfolio, in the form of the Mercedes-AMG GLA 45, now also includes our innovative four-cylinder turbo engine, so setting the benchmark in this segment. In addition, the new GLA 45 is not only significantly more dynamic, but also more practical in everyday use than its predecessor, thereby ensuring its appeal to a dynamic, leisure-oriented target group.”
Precision Dynamics with AMG Performance 4MATIC+ and Torque Control
A cornerstone of the GLA 45’s exceptional driving dynamics is the active, fully variable AMG Performance 4MATIC+ all-wheel drive. This sophisticated system incorporates AMG TORQUE CONTROL to enable selective power distribution to the rear wheels. This means power is not just shifted between the front and rear axles, but also intelligently distributed between the left and right rear wheels. The system continuously adjusts power delivery based on driving conditions, optimizing traction on any surface and through every corner. This remarkable capability stems from a redesigned rear axle differential equipped with two electronically controlled multi-disc clutches, each dedicated to controlling power flow to an individual rear wheel. This intricate system allows for nuanced power adjustments, maximizing grip and responsiveness whether you’re navigating city streets or pushing limits on a track.
The Heart of a Champion: New Four-Cylinder Turbo Engine
At the core of the Mercedes-Benz GLA 45 AMG lies the newly developed M139 2.0-liter engine, a marvel of engineering and the world’s most powerful turbocharged four-cylinder engine in series production. In the GLA 45, this engine unleashes 382 horsepower and 354 lb-ft of torque, outperforming its predecessor in both metrics. Adhering to the prestigious “One Man, One Engine” principle, each engine is meticulously handcrafted on an innovative production line in Affalterbach, ensuring unparalleled quality and precision. This commitment to craftsmanship results in an engine that not only delivers breathtaking power but also embodies the spirit of AMG performance.
This potent engine propels the compact performance SUV from 0 to 60 mph in a mere 4.3 seconds (estimated), showcasing its exceptional acceleration. The top speed is electronically limited to 155 mph, emphasizing the GLA 45’s focus on controlled high-performance driving. Beyond sheer power, the engine is engineered for responsiveness. AMG engineers meticulously tuned the torque curve (“torque shaping”) to deliver peak torque of 354 lb-ft across a broad range from 4,750 to 5,000 rpm. This careful calibration provides a power delivery characteristic reminiscent of a naturally aspirated engine, offering linear and immediate response throughout the rev range.
Innovative Engine Design for Peak Performance
The M139 engine boasts a suite of intelligent design features that contribute to its exceptional performance. Unlike the transverse mounting found in the AMG 35-series models, this engine is rotated 180 degrees on its vertical axis. This repositioning places the turbocharger and exhaust manifold at the rear, closer to the firewall, while the intake system is positioned at the front. This innovative configuration enables a flatter and more aerodynamic front-end design for the vehicle. Furthermore, the revised layout optimizes airflow with shorter, less convoluted ducts for both intake and exhaust, enhancing engine breathing and efficiency.
The engine utilizes a new twin-scroll turbocharger, engineered to provide both rapid responsiveness at lower engine speeds and substantial power at higher rpm. For the first time, the compressor and turbine wheel shaft are mounted on anti-friction bearings, minimizing mechanical friction within the turbocharger. This advanced bearing technology allows the turbocharger to respond swiftly and reach its maximum speed of up to 169,000 rpm with remarkable speed. With a peak charge pressure of 2.1 bar, this 2.0-liter four-cylinder turbo engine leads its segment in boost pressure as well. The electronically controlled wastegate (exhaust relief valve) offers precise and flexible charge pressure management, further optimizing responsiveness, especially during acceleration from partial load conditions.
Advanced Fuel Injection and Cooling Systems
To achieve optimal combustion and power delivery, the new high-performance four-cylinder engine employs a two-stage fuel injection system – a first for AMG’s four-cylinder engines. The first stage utilizes highly precise and rapid piezo injectors to directly inject fuel into the combustion chambers at pressures up to 200 bar, managed by the engine control system. The second stage supplements this with intake manifold injection using solenoid valves. This dual-injection approach is crucial for achieving the engine’s high specific output and ensuring efficient fuel delivery under varying load conditions. The electronically controlled fuel supply operates at a pressure of 6.7 bar, ensuring consistent and reliable fuel delivery.
Managing the immense heat generated by such a high-output engine requires a sophisticated cooling system. The system is intelligently designed to cool the cylinder head and crankcase to different temperature levels. This innovative approach allows for a cooler cylinder head, maximizing power and enabling efficient ignition timing, while maintaining a warmer crankcase to reduce internal engine friction. A mechanical water pump handles cylinder head cooling, while a second, electrically driven high-performance water pump manages crankcase cooling. This electric pump remains inactive during cold starts until the engine warms up, and during operation, it is regulated by the engine control unit to ensure optimal crankcase temperature management based on driving conditions.
“One Man, One Engine”: Handcrafted Excellence
The M139 engine is a testament to handcrafted excellence, assembled entirely by hand at AMG’s engine production facility in Affalterbach. A completely redesigned production line embodies the “One Man, One Engine” principle, integrating Industry 4.0 processes to an innovative level. This facility reflects the latest advancements in ergonomics, material flow, quality assurance, sustainability, and efficiency. AMG’s hand assembly operation, in its pursuit of Industry 4.0, embodies “smart production,” ensuring maximum flexibility, transparency, and efficiency. Innovative digital technologies safeguard and enhance engine quality and production processes, maintaining the highest standards of AMG craftsmanship.
Agile Gear Shifts with AMG SPEEDSHIFT DCT 8-Speed Transmission
Contributing to the Mercedes-Benz GLA 45 AMG‘s agile and dynamic character is the AMG SPEEDSHIFT DCT 8-speed dual-clutch transmission. The gear ratios are meticulously configured to provide highly responsive acceleration across the speed range, combined with rapid gear changes and optimized transitions during upshifts. Depending on the selected AMG DYNAMIC SELECT driving mode, the driver experiences distinct drive configurations with varying accelerator and gearshift characteristics.
The standard RACE-START function enables maximum acceleration from a standstill, delivering an exhilarating performance launch. This is further amplified by the dynamic drive sound, featuring partial ignition interruption during upshifts and automatic double-declutching during downshifts. Despite its performance focus, the GLA 45 incorporates efficiency features. In “Comfort” mode, the ECO start/stop function is active, and the “gliding” function can be selected in “Individual” driving mode, showcasing a balance between performance and efficiency.
Enhanced Traction with AMG Performance 4MATIC+ and AMG TORQUE CONTROL
The standard fully variable all-wheel drive system significantly enhances the dynamic driving experience. The key innovation is AMG TORQUE CONTROL within the new rear axle differential. This system utilizes two electronically controlled multi-disc clutches, each connected to a rear axle drive shaft. This allows for variable power distribution not only between the front and rear wheels but also selectively between the left and right rear wheels. The result is consistently optimized traction, even in challenging road conditions or during aggressive cornering, such as on a closed race circuit.
The drive torque control for both front-rear axle distribution and left-right rear wheel distribution is electromechanical. Factors influencing torque distribution include driving speed, lateral and longitudinal acceleration, steering angle, wheel speed differences, gear selection, and accelerator position. Electromechanical control offers advantages over electrohydraulic systems, primarily in providing more refined driving dynamics due to significantly faster response and speed-independent actuation of the discs across the entire adjustment range.
The all-wheel drive control characteristics are influenced by the selected drive mode and AMG DYNAMICS setting. In “Basic” and “Advanced” AMG DYNAMICS settings, the 4MATIC system operates in “Comfort” mode. In “Pro” and “Master” (part of the optional AMG DYNAMIC PLUS package), the 4MATIC system switches to “Sport” mode, delivering even more agile handling and pushing the limits of dynamic performance.
Optimized Suspension for Dynamic Handling
The new AMG suspension system provides the foundation for exceptional directional stability and dynamic cornering, minimizing body roll. Simultaneously, comfort is improved compared to the previous GLA 45. Longitudinal and transverse dynamics are perfectly coordinated. All suspension components are thoroughly revised to achieve higher maximum lateral acceleration while maintaining easy vehicle control at the limits.
The front axle utilizes a McPherson strut design, featuring one transverse control arm below the wheel center, one suspension strut, and one tie rod. The specialized axle geometry reduces torque steer, enhancing both comfort and agile handling. New aluminum wishbones reduce unsprung mass, improving spring response sensitivity. Race-derived radially bolted front axle brake calipers enhance stability. The front axle carrier is rigidly attached, further stiffening the front section.
The 4-link rear suspension is also rigidly connected to the body via a rear axle carrier, ensuring torsional rigidity. Each rear wheel features three transverse control arms, one trailing arm, and specific bearings. This design maximizes driving stability and agility, contributing to the GLA 45’s confident handling.
Adaptive Damping with AMG RIDE CONTROL
The adaptive damping system AMG RIDE CONTROL offers drivers a choice of three distinct suspension control modes, ranging from comfort-focused to highly sporty. The system automatically adapts damping forces for each wheel based on driving conditions and road surfaces within milliseconds, offering infinitely variable damping characteristics across a wide spectrum. This results in a balanced enhancement of both ride comfort and agility, allowing drivers to tailor the GLA 45’s ride to their preferences and driving scenarios.
High-Performance Braking System
The high-performance braking system ensures reliable fade-resistant deceleration and short braking distances. On the standard Mercedes-Benz GLA 45 AMG, 4-piston fixed front calipers work with 13.8 x 1.3-inch brake discs, while 1-piston floating rear calipers engage 13.0 x 0.9-inch discs. The discs are internally ventilated and perforated to enhance heat dissipation and prevent brake fade, even under extreme driving conditions. Grey-painted brake calipers with white AMG lettering are standard.
For even greater braking performance, the optional AMG DYNAMIC PLUS package upgrades the braking system with larger 6-piston fixed front calipers and 14.2 x 1.4-inch brake discs. These upgraded calipers are painted red and feature a black AMG logo, visually distinguishing the enhanced braking system.
Precision Steering with Variable Ratio
The electromechanical AMG speed-sensitive power steering supports a sporty driving style with direct cornering response. It features a special rack with a variable transmission ratio and two characteristic curves. Depending on the selected drive program, the steering provides either taut and sporty feedback or more comfort-oriented steering feel. Rigid mounting in the integral carrier enhances steering precision and connects the steering system more directly to the body.
Wide Range of AMG DYNAMIC SELECT Drive Programs
The six AMG DYNAMIC SELECT drive programs – “Slippery,” “Comfort,” “Sport,” “Sport+,” “Individual,” and “RACE” (available with the optional AMG DYNAMIC PLUS package) – provide a broad spectrum of vehicle characteristics, from comfortable cruising to highly dynamic performance. These programs modify numerous parameters, including:
- Powertrain: Accelerator pedal characteristics, shift times, and shift timing (Reduced, Moderate, Sport, or Dynamic).
- AMG DYNAMICS: Agility functions like all-wheel control, steering characteristics, and ESP® functions (Basic, Advanced, Pro, or Master).
- Suspension: Damping characteristics (Comfort, Sport, Sport+).
- Exhaust System: Sound and sound characteristics (Balanced or Powerful).
AMG DYNAMICS for Enhanced Agility and Stability
A new feature in the AMG DYNAMIC SELECT drive programs, AMG DYNAMICS, enhances agility and stability. This integrated agility control system extends the stabilizing functions of ESP® with agility-enhancing interventions in all-wheel drive control, steering characteristics, and additional ESP® functions. For example, during high-speed cornering, brief braking intervention at the inner rear wheel generates a controlled yaw motion around the vertical axis, improving turn-in response and precision.
AMG DYNAMICS offers a spectrum from extremely stable to highly dynamic settings. The multimedia display shows the AMG DYNAMICS symbol and corresponding information when a drive program is selected.
- “Basic” mode, linked to “Slippery” and “Comfort” programs, prioritizes very stable handling with high yaw damping.
- “Advanced” mode, activated in “Sport” mode, maintains neutral vehicle balance, reducing yaw damping and steering angle requirement for enhanced agility, ideal for dynamic driving on winding roads.
- “Pro” (Professional) mode, associated with “Sport+” program, further enhances dynamic driving assistance, increasing agility and road feedback during cornering.
- “Master” mode, linked to “RACE” mode (AMG DYNAMIC PLUS package), is designed for closed circuits, offering slight oversteer, low steering angle requirement, and more agile steering for maximum dynamism. Activating “Master” mode requires switching ESP® to ESP® SPORT Handling Mode or ESP® OFF using a separate center console button.
In “Individual” drive program, drivers can customize AMG DYNAMICS levels (“Basic,” “Advanced,” “Pro,” “Master”) and directly select settings using AMG steering-wheel buttons.
Reinforced Body Shell for Enhanced Dynamics
AMG engineers extensively reinforced the body shell to ensure precise self-steering characteristics, track stability, and camber stability, even at high speeds. A lightweight aluminum “shearing plate” bolted under the engine increases torsional rigidity at the front end. Diagonal struts in the underbody further enhance rigidity, reducing longitudinal and lateral torsional movement and minimizing rolling and pitching during cornering, braking, and load changes.
Athletic and Muscular Exterior Design
The exterior of the Mercedes-Benz GLA 45 AMG exudes dynamic appeal. A long hood with powerdomes, a compact greenhouse, and muscular shoulders over the wheel arches clearly signal its sports car DNA. The AMG-specific radiator grille with vertical slats identifies it as an AMG Performance family member. Standard LED High Performance headlamps illuminate the road ahead. Flared front fender wheel arches and large air intakes with silver chrome inserts enhance its powerful presence. A silver chrome front splitter optimizes airflow and aerodynamic performance.
Aerodynamically optimized 19-inch light-alloy 10-spoke wheels and door panels with silver chrome inserts (or optional high-gloss black) are striking in profile. Optional 21-inch light-alloy wheels are also available.
The rear features twin round tailpipes (3.2-inch diameter) and a wide rear bumper. Slim two-piece rear light clusters emphasize width. A diffuser with four vertical fins enhances aerodynamic performance. A body-color airflow break-away edge on the roof spoiler completes the distinctive rear profile.
Driver-Focused Interior with MBUX Infotainment
The high-quality interior, featuring sporty appointments and the MBUX infotainment system, creates a close connection between driver and machine. Contoured sport seats with firm lateral support offer a commanding driving position. Optional AMG Performance seats are available. Standard upholstery combines black MB-Tex with DINAMICA, featuring red double topstitching and AMG carbon fiber-look trim. Optional Neva Grey/Black MB-Tex upholstery with mid-grey double topstitching and light-longitudinal-grain aluminum trim is also available, alongside four optional leather upholsteries.
The piano black lacquer-look center console includes a touchpad control and additional switches for 3-stage ESP®, manual transmission mode, and optional AMG RIDE CONTROL adaptive damping.
AMG-Specific MBUX Displays
The MBUX infotainment system blends sporty design with sophisticated details, creating a closer connection between vehicle, driver, and passengers. Appealing presentations enhance clear control structures with brilliant 3D graphics on two displays under a shared glass cover, forming a Widescreen Cockpit emphasizing horizontal interior design.
Drivers can choose from three AMG display styles for the instrument cluster: “Classic,” “Sport,” and “Supersport.” “Supersport” mode is particularly striking, featuring a central round rev counter and bar-graph style supplementary information with a 3D perspective extending to a simulated horizon. The AMG menu provides access to special displays like gear indicator, Warm-up, Set-up, G-Meter, RACETIMER, and Engine Data. The touchscreen multimedia display also reinforces the dynamic configuration with AMG-specific displays, such as driving mode visualization and telemetry data.
The voice control system, activated by “Hey Mercedes,” is also integrated, recognizing and understanding natural language commands for infotainment and vehicle operation using artificial intelligence.
AMG Performance Steering Wheel with Steering Wheel Buttons
A multifunction sport steering wheel in Nappa leather with a flattened rim, perforated grip area, and red or black topstitching (depending on upholstery) ensures driver-vehicle symbiosis. Galvanized steering wheel shift paddles enable sporty manual gear changes.
The AMG Performance steering wheel is available in Nappa leather, DINAMICA, or Nappa leather/DINAMICA. Optional AMG steering-wheel buttons provide direct access to AMG drive programs and other AMG functions.
AMG TRACK PACE Data Logger for Track Performance
Optional AMG TRACK PACE, a virtual race engineer, is available on the Mercedes-Benz GLA 45 AMG. Integrated into the MBUX infotainment system, it continuously monitors over 80 vehicle-specific data points (e.g., speed, acceleration) during track driving. Lap and sector times are displayed, along with comparisons to a reference time. Green or red display elements instantly indicate whether the driver is faster or slower than their best lap.
Post-session data analysis helps drivers improve their skills. Acceleration and deceleration values (e.g., 0-60 mph, ¼ mile, 60-0 mph) can be measured and saved. A new algorithm precisely determines vehicle position, even detecting circuit departures or shortcuts using GPS data and vehicle sensors (acceleration, gyroscope, steering angle, wheel speeds).
Data is displayed on the multimedia display, instrument cluster, and optional head-up display. Pre-loaded race tracks like the Nürburgring and Spa Francorchamps are included, and custom circuits can be recorded. The map display can switch between 2D and 3D and is updated online.
MBUX Augmented Reality function can overlay the ideal racing line of a stored track on the multimedia or head-up display, providing a virtual driving instructor to improve lap times.
Dynamic Sound Experience
The AMG exhaust system emphasizes the sporty yet versatile character of the new GLA 45. Sound signatures range from harmonious and discreet (in “Slippery,” “Comfort,” and “Sport” modes) to dynamic and sporty (“Sport+” and “RACE”). An exhaust gas flap controls sound characteristics based on engine speed and load.
Technical Specifications
| 2021 Mercedes-AMG GLA 45 | |
|---|---|
| Engine | Handcrafted AMG 2.0-liter Inline 4 Turbo |
| Displacement | 1991 cc |
| Max. output | 382 hp at 6,500 rpm |
| Peak torque | 354 lb-ft at 4,750-5,000 rpm |
| Drive | AMG Performance 4MATIC+ fully variable all-wheel drive with AMG TORQUE CONTROL |
| Transmission | AMG SPEEDSHIFT DCT 8-speed dual-clutch transmission |
| Acceleration 0-60 mph | 4.3 s |
| Top speed | 155 mph* |
* Electronically limited
