The most priceless example of the legendary sports car that pioneered four-wheel-drive for production road cars is Audi UK’s own unregistered car with zero miles, and will never be put up for sale.

So rare is this car – the last right-hand-drive quattro sports car ever made – that Audi is forced to keep it in a secret location and stored in a sealed, dehumidified environment.

An untouched and as new car could actually be worth an unlimited sum to an enthusiast Audi collector. “We would never be able to replace this car and its value to the brand is inestimable” said Jeremy Hicks Director of Audi UK. “Whenever we have exhibited it, we have received a succession of surprisingly high offers, but sadly this particular car, the quattro that started it all for the company in the early eighties, will never be for sale”.

Production ceased on the quattro almost twenty years ago. “We are seeing renewed interest in our classic cars and we fully expect demand for the first Audi quattro to rise dramatically this year,” concluded Mr Hicks.

Intriguingly, Audi has always spelt 'quattro’ with a lower case Q.