Brabus.

[News_Stig]

Your dog had better be strapped in. Your wardrobe had better be tied down. Your wife had better be belted in. You had better be holding onto the steering wheel real tight before touching that loud pedal, as Brabus have tinkered with the AMG CLS Shooting Brake......... (and the diesel ones too).

Mercedes tuning specialist Brabus has unveiled a raft of packages for the new CLS Shooting Brake. A range of tune-ups, body addenda, alloy wheel designs and sports exhaust packages are to be offered, but the real headline act is the 611 bhp option for the flagship CLS63 AMG variant.

It's not just a mad-cap power struggle though; Brabus offers a three-year/62,000-mile warranty on all its power upgrades, so bear that in mind if the other half isn't convinced your new family estate needs McLaren 12C-chasing poke.

That depends which you opt for. Mercedes is only bringing one petrol-powered Shooting Brake to the UK: the V8 bi-turbo AMG range-topper. Brabus uses a new intercooler and ECU to lift power from 549 bhp to 611 bhp, and torque from 590 lb ft to 737 lb ft, which works out in new money as a nice, round 1000Nm.

All that twist is still applied to the road by the rear wheels alone, which can be specced up to 20 inches in diameter. The headline Top Trumps stats read like this: 0-62 mph in a Boxster-embarrassing 4.2 sec, and a full 200 mph flat-out.

However, Brabus has also breathed on the two diesel-powered Shooting Brakes Mercedes is offering in the UK: the CLS250 CDI and CLS350 CDI. The smaller four-cylinder 250 is up 31 bhp to 232 bhp, while torque jumps 78lb ft to 446 lb ft. Opt for the six-pot 350 CDI and you get a rather trick-two stage system depending on which driving mode you're in.

Stay in 'Eco' mode, and power output remains at 261 bhp, with only torque boosted (from 457lb ft to 590 lb ft). Switch to 'Sport' and power also makes the jump, up to 308 bhp from 261 bhp. That means 0-62 mph in 5.9 sec and a top speed pegged back at 155 mph.

Aside from those massive wheels, and the bodykit you can specify in plastic or lacquered carbonfibre, there's also a 35 mm ride height drop, and a sports exhausts that you can set to 'Coming Home' mode to avoid annoying the neighbours with a V8 blare. Brabus also fits a limited-slip diff for tail-out antics when the family aren't on board.

Inside, the CLS cabin gets treated to Brabus-branded leather, lashings of carbonfibre inlay, and you can even have an integrated iPad inside. Aluminium pedals, gearbox shift paddles and a choice of 211 mph or 250 mph speedos complete the tweaks.

Prices haven't been announced, but we have a feeling that the Brabus Shooting Brake will sit under the heading market 'if you have to ask, you can't afford it.'