The engine comes from the Vauxhall Insignia ... and that remains the case with the Biturbo, feeling keener still with lower suspension. Better yet is the GTC three-door, whose HiPerStrut front ...

Vauxhall has introduced a new twin-turbocharged diesel engine to top the Insignia’s oil-burning range. With 192bhp and 295lb ft on tap, the new motor has 35bhp and 37lb ft more than the single ...