Skip advert
Advertisement

Mercedes-A45 AMG replacement set to breach 400bhp

German firm's next hot hatchback will take power outputs to new levels for the class

The never-ending German horse power race is set to continue with Mercedes' next generation A45 AMG.

Speaking to our sister title Auto Express, boss of Mercedes in-house skunkworks AMG, Tobias Moers, has revealed the replacement for the range-topping A-class will see power eclipse 400bhp. This will return bragging rights to Stuttgart after Audi announced its 394bhp RS3 at the Paris Motor show.

Advertisement - Article continues below

The third generation A-class is set to hit showroom floors in the latter half of 2017, so the AMG derivative will likely follow in 2018.

According to Moers, there was no further headway to be made with the present engine beyond its current 376bhp guise, with temperature management the limiting parameter prohibiting further development of the M133 engine. So, the four-cylinder, two-litre, twin-scroll turbocharged powerplant will be ditched in favour of a new motor. 'For sure, the limiting factor is the heat management in the cylinder head, so we’re not moving forward with that engine any more.'

> Also read: Mercedes-AMG A45 review

Engineers have started work on a 'blank piece of paper', concocting a brand new, ground-up design for the supplanting engine. As with the current super hatch, power is expected to be deployed via a dual-clutch transmission, driving four wheels, courtesy of an AMG-tweaked Mercedes 4MATIC system. That combination would not only adorn the A45 with 400bhp-plus, but also give it a fighting chance of being the first hatch to crack 0-60mph in under four seconds.  

Such impressive performance will likely command a considerable price, with the next generation likely to cost from around £45,000. There are rumours Mercedes will fill the gap between the flagship A-class and quickest non-AMG model, at present the A250 4MATIC, with a tamer AMG version. This would mimic the firm's approach of late, introducing '43'-badged deputies to the full-bore AMG models as seen with the GLC, C-class and E-class models.

Skip advert
Advertisement
Skip advert
Advertisement

Most Popular

Polestar 5 review – cheaper and faster than a Porsche Taycan but not quite as sharp
Polestar 5 front
Reviews

Polestar 5 review – cheaper and faster than a Porsche Taycan but not quite as sharp

Polestar’s flagship finally arrives, with a bespoke aluminium structure, electric powertrain and suspension. But will anyone actually buy it?
1 Jun 2026
New Morgan Supersport 400 review – a real Porsche 911 rival with added power and focus
Morgan Supersport 400 front
Reviews

New Morgan Supersport 400 review – a real Porsche 911 rival with added power and focus

A 67bhp power hike makes this the most powerful Morgan road car ever, and one of the most exciting
27 May 2026
Honda Prelude v Toyota GT86 – controversial Japanese coupes face off
Honda Prelude v Toyota GT86
Group tests

Honda Prelude v Toyota GT86 – controversial Japanese coupes face off

A lack of new coupes means we look to the past for a left-field rival to Honda’s new Prelude
31 May 2026