Subscribe to our YouTube channel http://bit.ly/11Ad1j1
Read more: http://www.autoexpress.co.uk/audi/r8 and http://www.autoexpress.co.uk/porsche/911

We've taken two four-wheel drive supercars to the track to see which is quicker, the Porsche 911 Carrera 4S or Audi R8 V8 Coupe?

Subscribe to Auto Express magazine and get 6 issues for £1 plus a free gift: http://subscribe.autoexpress.co.uk/yt