Choosing what to include was easy; deciding what to leave out was harder. So many cars have signified an evolutionary step towards automotive improvement, but it’s those that signify a giant leap, either forwards or sideways, that made the final cut.

Some of the winners in our office debate have long enjoyed recognition – the Mini and the Lamborghini Miura both using the same engine and transmission layout to achieve polar opposite results but each redefining their class – while others draw controversy.

Was the Cisitalia 202 Gran Sport the first true GT? Did the Renault 5 Turbo 2 bring the hot hatch into the big league? From the twisting tarmac of Wales to the sunbleached version they have in Italy we wrestle with the cars and the questions they pose.

The Game Changers Issue of Classic Cars is on sale now.