We test the new 991-generation Porsche 911 GT3 against the Aston Martin V12 Vantage S, the fastest ever Aston. Read more: Porsche 911 GT3 review: http://bit.ly/1lBdJtm Aston Martin V12 Vantage S review: http://bit.ly/1fWikjJ Subscribe to our YouTube channel http://bit.ly/11Ad1j1 Subscribe to the mag http://subscribe.autoexpress.co.uk/yt There are few things more evocative than a V12 sports car, bu
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