Following a comprehensive upgrade, the Mercedes-AMG A45 4MATIC opens up a new dimension in vehicle dynamics. With peak output of 280 kW (381 hp) and a maximum torque of 475 Nm, the entry-level model from Mercedes-AMG is the world's most powerful compact sports model. The revised gear ratios, aerodynamic fine-tuning and the new DYNAMIC SELECT driving modes raise overall performance to a higher level, underlining the claim to leadership in this market segment. The compact saloon absolves a sprint from standstill to 100 km/h in 4.2 seconds, 0.4 seconds faster than the preceding model. Maximum traction also on tight bends is ensured by the standard all-wheel drive and the optional front axle differential available for the first time. At the same time fuel consumption has remained as before: no other high-performance model in this class can better its NEDC fuel consumption from 6.9 litres per 100 kilometres (corresponding to 162 g/km CO2).
Mercedes-AMG's entry into the compact class in 2013 exceeded all expectations: the sophisticated A45 immediately took the top position in its market segment. The sporty and exciting driving experience plus an emotionally appealing design immediately impressed the dynamic and individualistic target group, and gained new customers for the sports car brand.
"We never rest on our laurels, but constantly strive to develop our products further," says Tobias Moers, Chairman of Mercedes-AMG GmbH. "The A45 still had so much improvement potential that we felt compelled to realise it to the full. Our brand claim simply obliges us to." The AMG development team intelligently optimised numerous features of the compact bestseller to further enhance the vehicle dynamics and driving pleasure.
Modifications to the transmission, suspension, electronics, design and appointments have turned the compact sports model into a completely new car delivering 280 kW (381 hp) and 475 newton metres of maximum torque to enter dimensions previously the province of higher vehicle classes, and unrivalled by any competitior: 100 km/h is already reached from standstill in 4.2 seconds. This means that the new Mercedes-AMG A45 accelerates 0.4 seconds faster than its predecessor.
Low fuel consumption at the level of the preceding model
At the same time its fuel consumption has been kept at the previous level: no other high-performance model in this class can match its NEDC fuel consumption from 6.9 litres per 100 kilometres (corresponds to 162 g/km CO2). The agile, turbocharged four-cylinder engine combines its power and efficiency to produce a top figure in its class: the output of 141 kW (191 hp) per litre marks a record for a series production four-cylinder engine, and raises the high-performance AMG power unit to the level of thoroughbred super sports cars.
The engine specialists at AMG mainly achieved this increase in power output with a newly configured valve assembly. In addition the combustion processes have been optimised by reconfigured timing and turbocharging. The maximum charge pressure continues to be 1.8 bar.
On the road the turbocharged AMG 2.0-litre four-cylinder engine thrills with extremely fast responses to accelerator movements, high torque, enormous flexibility and an emotional engine note. The exhaust system features an automatically controlled exhaust flap as standard. The emotional appeal of the engine sound can be varied depending on driving mode or at the touch of a button.
From the GT and C 63: The new AMG DYNAMIC SELECT driving modes
Already familiar from the Mercedes-AMG GT sports car and the top-of-the-line C-Class model, the Mercedes-AMG C 63, the DYNAMIC SELECT driving modes "Comfort", "Sport", "Sport +" and "Individual" now also allow the driver of the Mercedes-AMG A45 to preset the handling characteristics according to personal preferences or the driving situation.
Driving mode "Comfort" allows relaxed, non-stressful driving with a subdued engine note and gentle gearshifts. The "sailing" function installed for the first time, plus the ECO start/stop system, help to save fuel. "Sport" mode emphasises agility and driving pleasure, with a sporty engine and transmission configuration. The sound of the turbocharged engine becomes more throaty. In "Sport +" mode the transmission responds even faster to dynamic load changes. The shift strategy of the transmission is optimally modified for the needs of a very sporty driving style - including extremely short shift times, emotional double declutching and faster responses to the accelerator. Over and above the preconfigured modes, the "Individual" driving mode makes it possible to vary individual parameters for the engine, transmission mode and 3-stage ESPÂ® .
New: The AMG DYNAMIC PLUS package as an optional extra
Completely new for the Mercedes-AMG A45, the AMG DYNAMIC PLUS package sharpens up the vehicle dynamics even further. It clearly shows the influence of the numerous motor racing successes by Mercedes-AMG on the development of road vehicles. One major component is the newly developed, mechanical front axle locking differential, which significantly improves traction when driving in a sporty style. The greatest advantages become apparent during fast acceleration out of bends, where the locking differential allows maximum grip and high rates of lateral acceleration. Moreover, the A45 is stabilised even more effectively during load changes and at high speeds.
The AMG DYNAMIC PLUS package also includes the AMG RIDE CONTROL sport suspension: one of its new features is the two-stage, adaptive damping adjustment. The system operates fully automatically, adapting the damping forces for each wheel according to the driving situation and road conditions. The driver is also able to preselect the basic damping characteristics in two stages for a personally configured setup. The RIDE CONTROL sport suspension is also available individually as a separate optional extra. The speed-sensitive sports power steering of the A45 fundamentally supports a sporty driving style with its high steering precision and direct self-steering characteristics. It likewise has two different sets of characteristics: depending on which damper setup the driver has selected, it provides a taut, sporty or more comfortable steering feedback.
The fifth DYNAMIC SELECT driving mode "Race" is included with the AMG DYNAMIC PLUS package and the AMG RIDE CONTROL sport suspension: this makes the Mercedes-AMG A45 ideally suited to fast laps on the racetrack.
The response characteristics of the 2.0-litre turbocharged engine and the accelerator are now even more immediate than in "Sport +". The exhaust system, suspension and steering remain at "Sport +" level, while 3-stage ESPÂ® changes to "SPORT HANDLING MODE" and allows wider drift angles. The transmission activates "Race" mode, which is configured to maintain an optimum engine speed in the lowest possible gear when driving at racetrack speeds. "RACE" mode is rounded off by rapid and responsive gearshifts.
Lower ratios: The AMG SPEEDSHIFT DCT 7-speed sport transmission
Another dominant factor in the agile and dynamic character of the power transfer is the AMG SPEEDSHIFT DCT 7-speed sport transmission. Thanks to the now shorter transmission ratios in 3rd to 7th gear, the driver experiences even more dynamic acceleration in all speed ranges. Together with optimised response and shift times, the closer ratio spread ensures better transitions when upshifting.
Excellent traction and great driving pleasure: The all-wheel drive AMG Performance 4MATIC
The AMG Performance 4MATIC all-wheel drive system combines the best possible traction with outstanding driving pleasure. To suit the dynamic handling requirements, the Mercedes-AMG A45 features infinitely variable torque distribution. The range extends from front-wheel drive only to a 50:50 percent distribution to the front and rear axles. In the compact class this variability suited to the driving situation results in an optimum measure of dynamism, efficiency and traction.
Design and aerodynamics:More stability, more dynamism
The influences from motor sport are immediately apparent in the new Mercedes-AMG A45: the muscular AMG design with new features impressively accentuates the dynamic design idiom of the A-Class. The front skirt in the new A-wing design gives the compact proportions an even sportier emphasis. The distinctive, three-dimensional A-wing also acts as an air feed to the three exclusively styled, AMG-specific cooling air inlets. New LED High Performance headlamps with "eyebrows" as daytime driving lamps are included as standard. The A45 also shows clear motorsport influences at the rear: the rear apron with four vertical fins and a striking spoiler lip in the diffuser provides a visual highlight.
Yet it is not only the design, but also the aerodynamics of the A45 that the AMG developers have improved even further. The aim for a sports car is not only to achieve perfect streamlining, but also the greatest possible downforce. In the A45 the new combination of a spoiler lip under the front splitter, a rear apron with a diffuser insert and an AMG spoiler lip on the roof spoiler generates even more downforce for increased handling stability. These measures also improve the aerodynamic balance, with a positive effect on handling.
Passion for performance extends into the interior
The dynamic and sports character continues in the interior: the new multifunction sport steering wheel ensures a perfect link between the car and its driver. The steering wheel rim with a flattened lower section, perforated leather in the grip area and red contrasting topstitching is both attractive and pleasant to the touch. For better adjustment to suit different body sizes, the sport seats now feature seat cushion depth adjustment as standard.