The new Mercedes-AMG A 45 4MATIC+ and CLA 45 4MATIC+: The super-sportscars in the compact class

Outstanding performance, the ultimate driving dynamics, expressive design ‑ the new Mercedes-AMG compact A 45 4MATIC+/ A 45 S 4MATIC+ sports cars and CLA 45 4MATIC+/ CLA 45 S 4MATIC+ reassert their leading positions in their segments. They seamlessly continue the success story of their predecessors, while setting numerous new standards. Available in two output and torque variants, the completely newly developed 2.0-litre engine is the world’s most powerful turbocharged four-cylinder engine in manufactured for series production.

Even the basic model with 387 hp is more powerful than its predecessor. The S-variant with 421 hp jostles with considerably higher vehicle classes. Perfect sequences in all driving situations, and fast gearshifts measured in milliseconds, are guaranteed by the new AMG SPEEDSHIFT DCT-8G dual-clutch transmission with eight gears. The active, fully-variable AMG Performance 4MATIC+ all-wheel drive distributes the power to the rear axle wheel-selectively by AMG TORQUE CONTROL – for top traction and the spectacular Drift mode. This is made possible by a new rear axle differential featuring two multidisc clutches – one for each rear wheel.

Exterior design: AMG family membership even more apparent

The new Mercedes-AMG A 45 4MATIC+ and CLA 45 4MATIC+ models are even more distinctive than their predecessors. The exterior conveys sheer driving pleasure even at standstill. For the first time, the compact class now also features the AMG-specific radiator grille with a wider lower contour and twelve vertical louvres – as a clear indicator of AMG Performance family membership. At the same time, the pronounced “shark nose”, the slim, deeply contoured headlamps and the flat, aerodynamically favourable bonnet with powerdomes visually lower the front section to create the impression of extremely dynamic forward thrust.

The imposing presence is also accentuated by the wider front wings with flared wheel arches. These create space for the wider front axle, and underline the athletic appearance. This muscular impression is even stronger with the A 45 4MATIC+ than with the CLA 45 4MATIC+, as the basic CLA already has a wider front track and the wings could be flared to a lesser extent.

Individual details as distinguishing features

The front apron is also a distinguishing feature. In the A 45 4MATIC+ it is in a jet-wing design. Horizontal fins in the outer air inlets and the stretched lower air inlet emphasise the impression of width. The CLA 45 4MATIC+ has an even more expressive appearance with its jet-like external air inlets, showing its close family relationship with the AMG GT 4-door Coupé.

Viewed from the side, the wider AMG side skirts visually lower these compact sportscars so that they appear to hug the road more closely. If the Silver Chrome package is specified, the inserts are in silver chrome, and with the AMG Night package they are in high-gloss black.

The exterior mirrors are mounted on the door muscle, echoing the look of Mercedes-AMG coupés and sportscars. This not only looks very sporty, but also improves the aerodynamics.

In the basic models the AMG high-performance braking system features grey-painted brake callipers with white AMG lettering. The S-versions are recognisable by their larger, red-painted 6-piston brake callipers with black AMG lettering.

The AMG-specific centre console in piano lacquer finish with a standard touchpad has additional buttons that control the functions ESP®, manual transmission mode and Adaptive Damping System (optional). In conjunction with the leather package, it features a silver chrome surround.

Drive system: new turbocharged four-cylinder with ample power

with an output of up to 421 hp, the completely newly developed 2.0-litre engine is the world’s most powerful turbocharged four-cylinder manufactured for series production. Mercedes-AMG has bettered the output of the preceding engine by 40 hp. Maximum torque has also increased from 475 to up to 500 newton metres. With an output per litre of up to 155 kW 211 hp, the new Mercedes-AMG high-performance turbo engine even ranks ahead of many well-known super-sports car engines. The new, highly efficient powerpack is produced on an innovative production line in Affalterbach, on the “One Man, One Engine” principle.

This positioning logic has already proved successful for the AMG Performance models with a V8 engine, and meets individual customer wishes even better. The new compact sportscars absolve the sprint from zero to 0-62mph in record time: the A 45 S 4MATIC+ requires only 3.9 seconds (CLA 45 S 4MATIC+: 4.0 seconds), while the basic A 45 4MATIC+ model absolves this discipline in 4.0 seconds (CLA 45 4 MATIC+ in 4.1 seconds). The top speed of the basic models is electronically limited to 155mph, while the S-models are capable of up to 167mph ex factory.

AMG SPEEDSHIFT DCT 8G dual-clutch transmission: agile and responsive

The 8-speed AMG SPEEDSHIFT DCT 8G dual-clutch transmission likewise contributes to the agile and dynamic character. The gear ratios have been configured so that the driver experiences very spontaneous acceleration in all speed ranges, combined with fast shifting and optimum connections when shifting up. Depending on the selected AMG DYNAMIC SELECT driving mode, the driver receives a specific drive configuration with different accelerator and gearshift characteristics.

Anyone who prefers to change gear for themselves can select the manual transmission mode in every drive program. Using the temporary M-mode, this is possible very rapidly merely by operating a steering wheel shift paddle.

AMG Performance 4MATIC+ all-wheel drive with AMG TORQUE CONTROL

The extremely dynamic driving experience in a completely new dimension is greatly assisted by the fully variable all-wheel drive included as standard. The secret is AMG TORQUE CONTROL in the new rear axle differential: This has two electronically controlled multidisc clutches, each of which is connected to a rear axle drive shaft. In this way the drive power can not only be completely variably distributed between the front and rear wheels, but also selectively between the left and right rear wheel. This means that depending on the driving mode and situation, the drive torque can be separately distributed to both rear wheels.

The result is consistently optimum traction, even in adverse road conditions and during extreme cornering manoeuvres, for example on the racetrack. Furthermore, this sophisticated solution allows Drift mode (standard in the S-models, included in the optional AMG DYNAMIC PLUS package for the basic models), which makes “powersliding” possible for even more driving pleasure.

Drift mode can be called up in the “RACE” driving mode using the shift paddles, provided that ESP® is deactivated and the transmission is in manual mode.

AMG RIDE CONTROL adaptively adjustable damping: with three modes

The optional AMG RIDE CONTROL adaptive damping system enables the driver to choose between three different suspension control modes. The spectrum ranges from comfort-focused to sporty. The system operates fully automatically, adapting the damping forces for each wheel according to the driving situation and road conditions. This happens within milliseconds and is infinitely variable, with a wide spread of damping characteristics. The result is that ride comfort and agility are enhanced in equal measure.

AMG exhaust system: with exhaust flap for sound modulation

As standard the exhaust system has an exhaust flap which is automatically controlled depending on the engine speed and load. Depending on the drive program selected it modulates the sound from harmoniously discreet (in the programs Slippery, Comfort and Sport) to emotively sporty (in Sport+).

Register your interest in the new Mercedes-AMG A45 4MATIC or CLA 45 4MATIC