Some could argue that the sixth-generation of the Mercedes SL Roadster was mental enough: 4.7-litre turbocharged V8; 0-100kph in 4.6s; an electronically limited 250kph top speed; and looks that could chill the blood at twenty paces. These are details to take with a snort of contention.

Some could also argue that a more powerful, more lunatic version is hardly something to turn a cold shoulder too either. And for proof of that we need only look at the various adjustments the boys and girls at Brabus have made.

This tuned SL500 for example punches out – ready? – 520hp (85hp more than its stock counterpart) from the same 4.7-litre V8 courtesy of its new B50-520 PowerXtra CGI power kit. Plus new engine mapping, intercoolers and the use of high performance oil.

Once that’s all safely tucked away under the bonnet, the Brabus SL500 delivers 100kph from standstill in just 4.4s and an electronically limited top speed of 300kph. A rather handy 604 lb-ft of torque helps too.