Mercedes AMG A45 S – Pumped full of Power

The Mercedes AMG A45 S is here and is full of power and ready to beat down its rivals, in the super-hot hatchback market. The battle between car manufacturers to create the fastest most powerful hot hatchback as been going on for years. Each is trying to get the upper hand over the others in this competitive market place, bringing together quality interior and technology along with highly tuned powerful engines.

For us petrolheads, this is an excellent source of competition as it pushes each manufacturer to push the boundaries further and further. To create some of the most aggressive, fun and great looking motors out there, to put a smile on our faces and bring back the kid inside. Most of these super hot hatchbacks are now poster cars, which can sit proudly with the more exotic supercars on any bedroom wall.


The Mercedes AMG A45 S is one of the more expensive cars in its class. For your money though, you do get a high level of kit as standard. These include 19inch alloy wheels, an AMG-specific grille, an AMG leather steering wheel, sports seats made in Artico leather and Dinamica microfibre, red brakes callipers and AMG suspension with AMG Ride Control. The list of standard features goes on and on, both in and outside the car, some will be touched on later.

Continue reading the yoauto review to help you decide if the Mercedes AMG A45 S is the right car for you. If the AMG A45 S doesn't tick all of your boxes, then don't forget to visit our Used Car buying page, where you will find thousands of cars available across the UK at excellent prices.

Power, Performance and Style

The AMG A45 S comes fitted with two sets of large (90mm) round twin exhaust tailpipes, featuring AMG lettering, flared wheel arches, a wider side skirt and more. These all combine to make the A45 S more imposing and athletic and shouts out as the new Alpha Leader.

The AMG A45 S is only available with one choice of engine, a two-litre four-cylinder turbocharged monster, developing a staggering 421hp and 500Nm torque. This currently makes it the most powerful four-cylinder engine road car on sale. The new AMG engine is assembled entirely by hand following the Mercedes-AMG principle 'one man, one engine'. To aid this, a new production line was constructed at the AMG factory in Affalterbach, emphasising the importance and value Mercedes put on perfecting this new engine. The A45 S will go from 0-62mph in just 3.9secs and go on to a top speed of 168mph, quicker than any other hot hatchback currently on sale.


The engine is mated to the new 8-speed, AMG Speedshift DCT 8G dual-clutch transmission, which can change gears in milliseconds and is perfect in all driving modes. The AMG A45 S is also fitted with the fully variable, AMG Performance 4MATIC+ all-wheel-drive system. It has AMG Torque control, which helps to create a unique and dynamic driving experience, in any conditions and using any of the AMG Dynamic Select driving modes. There are six driving modes, Slippery, Comfort, Sport, Sport+, Individual and Race, so something to play around with and learn which suit you best.

New AMG suspension is fitted along with frequency-selective shock absorbers, to provide dynamic handling and stability while also making a more comfortable ride than the previous model. AMG has developed a more rigid bodyshell for the A45 S to help it cope with all the power and torque, to maintain excellent balance through corners with minimal body roll. The AMG A45 S now comes with a 'drift' mode, which uses a similar torque vectoring system to the one found in the Ford Focus RS and can be used when in 'race' mode. For such a sporty performance car, it should be more comfortable than you'd expect. Mercedes has worked hard to maintain the practicalities of the family hatchback mould.

Interior design and technology

The interior of the AMG A45 S is similar to the standard A-Class model but with upgraded features. There are new AMG sports seats, which are figure-hugging but still comfortable. Made from Artico leather and Dinamica microfiber and colourful yellow stitching, to enhance the sporty look. There's an AMG leather and microfibre sports steering wheel, with multi-functional controls.


The A45 S comes with the Mercedes' MBUX infotainment system, with a 10.25-inch touchscreen and 10.25-inch digital instrument cluster. This sits side by side, horizontally, to look like one large screen. There is a choice of three AMG display options for the instrument cluster 'Classic', 'Sport' or 'Supersport'. I think this feature looks great and very eye-catching when you look inside for the first time. There are yellow trim pieces throughout the cabin/dashboard, which all helps to bring it life and emphasise the A45 S' racing characteristics.

Some of the standard features you get are Apple CarPlay and Andriod Auto, wireless charging and Mercedes' impressive augmented sat-nav. With this being an AMG model, there are a few unique features as standard such as the AMG Track Pace Pack. This gives you a 'virtual race engineer' which records lap times and acceleration times, as well as using the sat-nav to overlay famous race tracks from around the world. A feature well worth finding more about and will undoubtedly be a conversation starter with your friends. There is also a G-Meter, Gear display, warm-up menu, SetUp menu and Race-Timer found in the AMG menu which can all be displayed.

In the back, space is as would be expected in a regular A-Class car, so it's roomy enough for a couple of adults to be comfy. The boot is again quite good for such a performance happy car, coming in at 370 litres capacity. Everything inside looks and feels of real quality as you'd expect from the Mercedes-AMG technicians.

Mercedes-AMG-A45S - rearview

The AMG A45 S comes with an array of safety features as standard including Speed limit assist, attention assist, active brake assist and active lane keep assist. All of which should help the A45 S achieve high safety scores when it goes through the vigorous Euro NCAP tests.

The AMG A45 S is a remarkable feat of engineering and design, creating a majestic engine, which provides the performance of a supercar even quicker than an Aston Martin Rapide S 0-62mph. With a starting price of over 50K, the Mercedes is not cheap. However, for what you get, both equipment, performance and styling, I would happily buy this. I'd find the nearest race track, and just enjoy everything it has to offer, and it is a lot! Deliveries of the Mercedes AMG A45 S should start in November. My guess is there'll be a queue of customers waiting to get there hands on one of these.

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Stuart Porro

Stuart is a nationally and internationally recognised automotive content creator. Reviewing cars for some of the biggest names in the four wheeled world, you can catch him right here on Yoauto.
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