The debuts include the GTC Paris, Vauxhall's new concept, which is tipped to preview the design direction for next year's three-door Astra Sporthatch.

The carmaker said: 'The name, GTC Paris, evokes both the character of the vehicle and the fashionable city where it will have its debut. With its dramatic proportions and sculptural shapes the GTC Paris showcases an expressive, sporty compact hatch.'

The brand will also pull the covers off the Astra Sport Tourer, the second model to join the new Astra range.

The vehicle, which will be assembled exclusively at Vauxhall's Ellesmere Port plant in the UK, and is said to combine a sleek and rakish body from Brit Mark Adams' design team along with high levels of practicality – load volume is up by 30 litres to 500 litres with the rear seats up, increasing to 1,550 litres with the seats down. Features include new FlexFold functionality, which allows each section of the 60:40 split-fold rear seatbacks to be lowered at the press of a button, and the Easy-Access Cargo Cover.

The Sport Tourer's upper-body structure has been engineered at Vauxhall Engineering Centre in Bedfordshire and the carmaker says that UK versions will be tuned for local roads.

Also at the show will be the new Corsa ecoFLEX; the first Vauxhall to feature Start/Stop technology. This enables the new Euro 5-compliant 1.3 CDTi (75PS) models to achieve 4L/100km (70.6mpg) – up by over 7% – on the combined cycle with CO2 emissions of 105g/km.

Finally, Opel/Vauxhall's stand will feature the latest Ampera development car prior to its launch in early 2012.