Audi Sport quattro
You don't get much more justification for being in this list than ranking as a landmark. Hello,
Audi Quattro. This car defined an entire section of motorsport in world rallying. All those Evos and Imprezas would be nothing without it. And let's not forget the seriously daft Sport quattro - rarer, wider, a whole foot shorter and packing up to 444bhp from its turbo five. Unique.