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...
Chris Brown X Tyga's "Ayo" available now! iTunes: http://smarturl.it/CBTygaAyo?Iqid=yt
Amazon Music: http://smarturl.it/CBTygaAyoAm?Iqid=yt
Google Play: http://smarturl.it/C...