The mysterious Bentley Continental GT V8 white prototype was spied once again testing on the Nürburgring.

The mysterious Bentley Continental GT V8 white prototype was spied once again testing on the Nürburgring.

It seems Bentley is developing a more potent variant of the Continental GT V8 S since a prototype equipped with a fixed rear wing has been seen around the 'Ring. It also had a different front splitter and chances are other aerodynamic bits and pieces are in the works for what could possibly be an "RS" derivative.

It will likely maintain the V8 4.0-liter twin-turbo engine but output will be taken beyond the 521 bhp (389 kW) and 680 Nm (502 lb-ft) inside the GT V8 S. The added power and improved aerodynamics will probably make it faster in the 0-62 mph (0-100 km/h) sprint which currently takes 4.5 seconds for the "S".

A reveal could occur as early as October at the 2014 Paris Motor Show.

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Possible Bentley Continental GT V8 RS spied again