Jeremy Clarkson, James May and Richard Hammond take the new BMW M3, Mercedes C63 AMG and Audi RS4 to Spain. In a thorough test of performance, they find out which one has the best handling and which one makes you look like a hair gelled weasel. James tests the brand new Jaguar XF. Dr Who star David Tennant is the 'star in a reasonably priced car'. Plus, the boys make the ultimate Christmas present by turning a G-Wiz into a high performance radio controlled car.