Can the new Vauxhall Insignia Grand Sport steal sales from premium players?

The 2017 Vauxhall Insignia Grand Sport has been revealed and it's aiming right at the BMW 3 Series and Mercedes-Benz C-Class
For years, Mondeo men have been transferring in their droves to premium executive saloons, so it’s no surprise that the latest Volkswagen Passat, Skoda Superb and now Insignia have been keenly targeted at the vehicles that have been stealing their proverbial lunch. Even Ford, with its Vignale trim level, has been looking up to these heights.
For the buyer, the a