It was the first car launched by Alpine under Renault ownership (though Alpine had been affiliated with Renault for many years). It effectively updated the design of its predecessor, the Alpine A310, updating that car's silhouette with modern design features like body-integrated bumpers and a triangular C pillar with large rear windshield. It used the PRV V6 engine in a rear-engined layout, with extensive use of Polyester plastics and fibreglass for the body panels making it considerably lighter and quicker than rivals such as the Porsche 944. It was one of the most aerodynamic cars of its time, the naturally aspirated version achieved a world record 0.28 drag coefficient in its class.
The GTA name, used to denote the entire range of this generation, stands for "Grand Tourisme Alpine" but in most markets the car was marketed as the Renault Alpine V6 GT or as the Renault Alpine V6 Turbo. In Great Britain it was sold simply as the Renault GTA, as Sunbeam (and then Chrysler/Talbot) had been using the "Alpine" badge since the 1950s.
Source: Wikipedia (original)