A mysterious Aston Martin prototype has been spied undergoing testing on the Nürburgring.

A mysterious Aston Martin prototype has been spied undergoing testing on the Nürburgring.

Little is known about the model but speculation suggests it could be a mule used for testing the next-generation architecture that will underpin the replacements for the DB9 and Vantage. While nothing is official, the prototype features widened fender flares and appears to be based on the V12 Vantage S.

That's not much to go on but the next-generation of Aston Martin vehicles will benefit from the company's partnership with Daimler. The agreement calls for AMG to develop a bespoke V8 engine for use in future models such as the next-generation V8 Vantage. It will reportedly be based on the twin-turbo 4.0-liter V8 that resides in the C63 AMG and Mercedes-AMG GT.

Aston Martin has been coy on when we can expect the new models to arrive but previous reports have suggested a DB9 successor will be launched in 2017 and be followed by a new Vantage in 2018.

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