The all-new Seat Leon is set to make its world debut at the 2012 Mondial de l’Automobile.

The Spanish company will unveil the Leon five-door version in Paris, spearheading a new family of models that will eventually comprise five-door hatchback, three-door SC and ST estate. Both FR and SE specifications will be on display at the show.

The third generation model represents a shift in direction for the Leon, with improved luggage capacity and its wheelbase is six centimetres longer, for increased legroom.

The new Leon, whose UK order book opens in February for March deliveries, will come to market with co2 emissions from 99g/km. That means 74.3mpg and zero annual Vehicle Excise Duty.

The new Leon offers full LED headlamps and comes with a driver drowsiness detection function and an automatic lane-keeping assistant.

Sportier FR models will come equipped with Seat Drive Profile, a system that allows the driver to alter the characteristics of the power steering, throttle and, where a DSG automatic transmission is equipped, the gearing.