Another day, another Porsche, but will Jeremy be able to tell the difference between this new 911 Turbo and the old one? He also drives the Brabus S Biturbo Mercedes SL. James and Richard try to turn a Reliant Robin into a space shuttle. Simon Pegg is the Star in a Reasonably Priced Car.

Jeremy Clarkson, Richard Hammond and James May set out to buy second hand convertibles and discover some of the unusual pitfalls to watch out for when picking up a used car bargain. Also, Jeremy is on the test track in the insanely powerful Pagani Zonda R. Meanwhile, Simon Pegg and Nick Frost are the stars in the Reasonably Priced Car.