The Vauxhall Insignia comes with four engine options split equally between petrol and diesel. The only model we have tried is the GSi which is powered by a 230PS 2.0-litre four-cylinder petrol that, ...

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For starters, Vauxhall claims that the ... 315mm at the rear). The Insignia GSi BiTurbo gets a tweaked version of the familiar 2.0-litre diesel already used in cooking models.