Power and speed. That’s what we love and Brabus knows as much. Whenever news of a tuned model by the Mercedes specialist hits our inbox, we expect big numbers. And for its latest effort, called the Brabus 850 6.0 Cabrio, it hasn’t disappointed. In fact, the tuner was so confident in their powerhouse creation that they chose to unveil it during the 24 Hours of Le Mans. That’s confidence for you – and when looking at the newbie, we feel it was very well placed indeed. It is aggression personified.

Based on the Mercedes-AMG S63 Cabriolet, Brabus has given this a real shot in the arm. Make that two shot. The regular model makes 577 horsepower from that massive 5.5-litre twin-turbo V8 – but the Brabus version produces a monstrous 850 horses. You might have guesses as much from its name but how have they managed that, we hear you cry? Well for starters, the standard 5.5-litre V8 just wouldn’t cut it so displacement grew to 6.0-litres. Brabus added a longer stroke crankshaft, enlarged cylinder bore and matching forged pistons and connecting rods while two cylinder heads were re-machined to improve performance. The reworked motor (it also has larger turbos and there’s a new exhaust system too) now has a scarcely believable 1,450Nm of torque from 2,500rpm (but it has been electronically limited to 1,150Nm, otherwise the seven-speed automatic would probably disintegrate) and it can propel the luxurious, all-wheel drive Merc from 0-100kph in just 3.5 seconds. It has a top speed of 350kph which makes it the fastest four-seat convertible. The Bentley Continental GTC Speed or even the V12-powered Mercedes-AMG S65 Cabriolet are not match for this one.

Brabus has dressed up the car too and we like the look of the 21in Monoblock “Platinum Edition” alloys which are wrapped with large 255/35ZR21 tyres at the front and extra beefy 295/30ZR21 at the back. There’s also a new suspension module that drops the ride height by 15mm to give it a really menacing stance while the carbon fibre detailing on the front and rear bumpers and side skirts is a nice touch.  As for the interior, there’s lots of carbon fibre trim, illuminated Brabus scuff plates, aluminium paddle shifters and best of all a 400kph speedo.