Currently reading: Mercedes A-class AMG: more power than RS3
The forthcoming Mercedes A-class AMG's will be more powerful than the Audi RS3 says AMG's boss
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2 mins read
5 February 2012

Mercedes’ AMG division has called on the services of its High Performance Engine (HPE) offshoot in Brixworth, Northamptonshire, for engineering help in the development of the upcoming A-class AMG’s turbocharged 2.0-litre, four-cylinder engine.

Set to make its world debut at the Paris motor show in September, the four-wheel-drive mega-hatch is set to receive a heavily reworked version of Mercedes’ existing M271/M274 petrol engine.

The unit features the same 7mm wall thickness and 90mm bore centre space as Mercedes-Benz HPE had envisaged for its stillborn turbocharged 1.6-litre Formula 1 engine. This powerplant was under development before the world motorsport governing body, the FIA, ratified conflicting turbocharged 2.4-litre V6 engine rules for the 2013 F1 season.

AMG’s decision to involve HPE in the development of the engine follows tough engineering targets laid down by its boss, Ola Kallenius — a former head of HPE. He has insisted that the turbocharged 2.0-litre unit produce more power than the 335bhp turbocharged 2.5-litre, five-pot engine in the Audi RS3 Sportback and the 316bhp turbocharged 3.0-litre straight six used by BMW’s forthcoming M135i hatch. The new BMW hot hatch is earmarked to make an appearance at the Geneva motor show in March.

Further details remain scarce, although Autocar sources suggest the engine will receive a bore and stroke of around 83mm x 89mm, hinting at a capacity of 2.0-litres.

Despite earlier plans to provide the new engine with pressure-wave turbocharger technology from Swiss firm Hyprex, it is now set to run a more conventional exhaust gas-driven twin-scroll turbocharger in combination with the latest in piezo-guided direct injection.

As well as appearing in the A-class AMG, the new engine is earmarked for the larger CLC AMG and CLC Shooting Brake AMG, both scheduled to be launched next year. The engine and running gear are being tested in a B-class test mule, the B-class sharing its underpinnings with the CLC.

Renowned for turning out Mercedes’ F1 engines, as used by McLaren, Force India and its own factory-backed team, HPE is becoming increasingly involved in the engineering of the German car maker’s production car engines. Along with the A-class AMG’s engine, HPE has been approached to help in the development of the upcoming SLS E-Cell’s all-electric driveline.

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mullogutherum 8 February 2012

Re: Mercedes A25 AMG: more power than RS3

toptidy wrote:

No it won't be, but I also have my doubts about whether it will actually sell - I mean a hot A class is surely only ever going to look like someone has overdone it with the Max Power makeover, the basic shape just does not lend itself to a purposeful looking hot version.

I also don't think hot hatch buyers will consider Mercs any more than Merc buyers will consider a hot hatch, but maybe I will be proved wrong in time.

Remember that there will be extensive revision to the A class shape/style, if the Shanghai concept is any indication. Indeed, the concept looked like an AMG out-of-the-box. Post-Shanghai shots of the cooking versions derived from the concept look very disappointingly watered down, but the production AMG model might avoid that fate, and restore some of the conceptual magic.

And I at least, having owned both AMGs and hot hatches in the past, would be very interested to see what the combination would be like. It's already encouraging to see AMG pursuing an edgy screamer of an engine for the class, rather than the traditional big cubes approach.

Tuffty 6 February 2012

Re: Mercedes A25 AMG: more power than RS3

I'm with Fidji on the badging issue.

AMD did the same thing with their processors I think. The 2.6GHz would be called a D3000 because it "performed the same as an Intel 3.0GHz".

I suppose I would prefer an incorrect engine denotation to a pretentious name but why put engine notation on at all? So your peni5 is bigger than mine, bothered!

toptidy 6 February 2012

Re: Mercedes A25 AMG: more power than RS3

TegTypeR wrote:

.

I don't suppose it is going to be the most exciting and entertaining hot hatch, in the same way that the RS3 wasn't but it doesn't mean it won't be a good car. Mercedes have been getting a lot right recently (return to old values, decent AMG machinery) so it would be a foolish person to bet against this car.

No it won't be, but I also have my doubts about whether it will actually sell - I mean a hot A class is surely only ever going to look like someone has overdone it with the Max Power makeover, the basic shape just does not lend itself to a purposeful looking hot version.

I also don't think hot hatch buyers will consider Mercs any more than Merc buyers will consider a hot hatch, but maybe I will be proved wrong in time.

By the way has anyone ever seen one of the Brabus Forfours on the road? I wonder if they actually sold any.

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