There won't be many who try the latest Mercedes-AMG A45 S and require extra performance - it's a searingly rapid hatchback. But there will always be a few, because there always is - and for those people Brabus is on hand once again. Its new B45-450 upgrade "unleashes the dormant reserves in this four-cylinder turbo without impairing the robustness and durability."
It says a lot about how far AMG pushed the M139 2.0-litre in standard format that Brabus has only freed another 29hp - from the factory it makes 421hp. Torque has climbed by a reasonably modest - at least by Brabus standards - 37lb ft, too, for a total of 406lb ft. The gains mean a couple of tenths can be shaved from the 0-62mph time - now just 3.7 seconds - and, while the 168mph limiter remains, you can assume it's going to feel stronger at all speeds. These outputs exactly match an M2 CS, which weighs a similar amount to the AMG as well.
The additional power and torque have been achieved through "more than just special mapping for the A45 S's electronic engine management system", says Brabus. However, it's presumably doing a lot of the heavy lifting, given the additional modifications for the B45 package are a PowerXtra CPC auxiliary control unit, a different duct for the air box and a BoostXtra adapter, said to produce a "sporty blow-off noise like a race car". Hmm.
Of course, buyers could just leave it there; it isn't hard to see the appeal of a fairly modest A45 like this one (they are available without the rear spoiler!) that's as fast as anything this side of a 911 Turbo. But there's plenty more besides the B45 upgrade available from Brabus. A new range of Monoblock wheels are on offer (with bespoke tyres from Continental) as well as height adjustable springs, with anything up to a 30mm ride height drop possible. Oh yes, and it wouldn't be a Brabus without some sprinkles on top: illuminated stainless steel scuff plates, embossed floor mats and aluminium pedals are also on the extras list.
It's the power kit that's most interesting, though, particularly with Brabus offering a 62,000-mile Tuning Warranty and TUV approval with the B45-450. Nice to know when the engine is making 225hp per litre. Who said the days of crazy tuner specials were done! Given the current situation, Brabus suggests that assembly is only possible at Bottrop for the moment. And the price is on request. Still, when the world finally opens up, it's easy to imagine plentiful demand for the B45-450 parts; however fast it's made, there are always people who want to go faster...
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