Tiff and Jason are going head to head to see which car is better, the Porsche Cayenne Turbo or the Audi Q7 V12 TDI.
For more fantastic car reviews, shoot-outs and all your favourite Fifth Gear moment...
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The official video for my new single ‘Come And Get It’ taken from my second album Revolve
Get 'Come And Get It' now on iTunes: http://po.st/ComeAndGetItPR
New album '...