At 4.46 metres, the GTC Paris promises ample space for five people, yet still maintains a svelte and sporting appearance. Adams' team has maximised 'tension' in the design by limiting the amount of lines in the car's profile, and leaving the impression that the car's highlights and surfacing are 'pressed' on to the concept's 21-inch wheels.
Vauxhall's signature blade mimics that on the Insignia and creates a fine, tense crease along the rocker panel. This combines with a second line running from the door handle to the rear of the car, emphasising both a fine undercut and broad shoulder. A third line following the silhouette of the roof is finished in fine brushed aluminium accentuating the window graphic and leads to a sharply accented integrated spoiler.
Slim, eagle-eye shaped headlamps, flanked by LED running lights with chrome surrounds dominate the front of the GTC Paris. A sharp centreline crease runs down the bonnet (a trademark styling cue from Vauxhalls of yore) and leads to a dramatically low trapezoidal grille incorporating a chrome emblem bar.
At the rear, the imposing features of the concept are enhanced with LED tail lights, showcasing a long, stretched 'wing' night time graphic.
Underpinning the GTC Paris is a specially designed chassis with an extra-wide stance. Hinting at the car's power potential is an electronic limited slip differential and an updated version of Vauxhall's FlexRide adaptive damping system. The new Astra's unique compound crank / Watt's link rear suspension provides excellent packaging and secure, driver-focused dynamics.
A four-cylinder, 2.0-litre turbocharged engine, with direct petrol injection and Start/Stop technology is mated to a six-speed manual gearbox, providing drivers with high levels of performance and fuel efficiency.