Vauxhall has reduced C02 emissions and improved fuel consumption to its Insignia range, with some cars in the range now producing emissions of 129g/km.

While changes to the Insignia’s 2.0-litre turbo engine have yielded a near 5% drop in emissions on the Sports Tourer, each of the Insignia’s 2.0-litre diesel powerplants also become greener.

The Insignia ecoFLEX’s emissions have now dropped from 136g/km to 129g/km, with a corresponding improvement in fuel consumption from 54.3mpg combined to 57.6mpg.

Insignia Sports Tourer ecoFLEX efficiency gains mean a drop in CO2 to 134g/km and fuel consumption of 55.4mpg, up from 53.3mpg.

Regardless of the ecoFLEX model, power remains at 160PS, with torque at 350Nm.

But Vauxhall’s greenest Insignias aren’t the only ones to benefit in the range. The 2.0 CDTi 160PS model now benefit from CO2 emissions of 144g/km (down from 154g/km), meaning 6.5% improved fuel consumption and a 2% drop in BIK tax for company car users, down to 20% for Hatch and Saloon variants.

Keep up to date with all the latest car reviews with Fleet News.