The hottest current-generation Mini has been snapped with minimal camouflage, revealing its aggressive new bodykit and massive rear wing.

Mini's upcoming performance flagship has been outed during testing at the Nurburgring Nordschleife, wearing essentially no camouflage over its wild new aerodynamics package.

The new JCW GP will be built in very limited numbers – just 3000 will be offered – and is designed to represent the pinnacle of performance for the current-generation Mini three-door hatch.

With that in mind, it's wearing a pretty wild bodykit, even compared to what we've seen on previous GP models. The wheel arches wear slim extensions that appear to pull the air into the body, and the front splitter wears a deeper, more aggressive edge.

The rear wears a pair of massive exhaust pipes, but the highlight is undoubtedly the massive rear wing. It was previewed by the JCW concept car in 2017, but appears to have made production without change.

Although those wheels aren't likely to be the production units, they look wider than the standard rims, and hide a set of uprated brakes. The ride also looks to have been dropped compared to the standard JCW, although we'd need to get out there with a ruler to confirm how much.

Previous JCW GP models have run with no rear seats and a roll cage, and we'd expect that to continue with this generation.

Power will come from a turbocharged four-cylinder petrol engine making more than 220kW. Which engine isn't entirely clear, but we'd wager it'll be a variation of the 2.0L unit in the X2 M35i xDrive.

It makes 225kW and 400Nm in that application, although all-wheel drive is on hand to help manage those outputs. Could the JCW GP be all-wheel drive? Time will tell.

At the moment, the most powerful model in the Cooper Hatch line-up – the JCW – makes 170kW, all put to the front wheels. The previous limited-edition GP, of which just 55 came to Australia, offered 160kW from its 1.6-litre four-pot.