The mysterious Aston Martin Vantage prototype has been spied once again testing on a wet Nürburgring.

The mysterious Aston Martin Vantage prototype has been spied once again testing on a wet Nürburgring.

Initially, it was believed the car was a chassis testing mule of the next-gen AMG-powered Vantage but apparently this will be a more track-focused version of the current generation set to use the "GT3" designation. The model will likely make use of carbon fiber body panels, a stripped out cabin and magnesium wheels to lose some weight, with the company's engineering boss Ian Minards previously confirming a 100 kg (220 lbs) diet is easy to accomplish.

Power of the model would come from an evolution of the 6.0-liter V12 engine bringing a bump in output from the current 565 bhp (421 kW) to around 600 bhp (447 kW). By shaving off a considerable amount of weight while adding power, Aston Martin will probably enable the V12 Vantage S GT3 to be significantly quicker in the 0-62 mph (0-100 km/h) run than the regular version which needs 4.1 seconds (3.9s for 0-60 mph).

Chances are Aston Martin will introduce the version in March 2015 at the Geneva Motor Show.

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Aston Martin Vantage prototype spied again, likely a hardcore current-gen GT3 version