The changes including revisions to the engine management system on the Insignia’s 2.0-litre turbo engine, which has lead to a drop of nearly 5% in emissions on the Sports Tourer. In addition, each of the Insignia’s 2.0-litre diesel powerplants also become greener and most cost-efficient to run.

The Insignia ecoFLEX’s emissions have now dropped from 136g/km to just 129g/km, with a corresponding improvement in fuel consumption from 54.3mpg combined, to 57.6mpg. This means that as the model falls under 130g/km, customers will pay no VED for the first year and drivers and fleets also gain from lower BiK.

Insignia Sports Tourer ecoFLEX models also benefit from efficiency gains, with a drop in CO2 to 134g/km and fuel consumption of 55.4mpg, up from 53.3mpg. Across the ecoFLEX line-up, power remains at 160PS, with torque at 350Nm from 1750-2500rpm.

In addition, the 2.0 CDTi 160PS model now benefit from CO2emissions of 144g/km (down from 154g/km), meaning 6.5% lower fuel consumption for all drivers and a 2% drop in BIK tax for company car users, down to 20% for Hatch and Saloon variants.

Completing the revised engine line-up is the 130PS version of the 2.0 CCDTi, which thanks to an all-new turbocharger, emits combined CO2 emissions of just 136g/km – an 11.5% reduction.

Vauxhall has also revised the 2.0 CDTi engine range to reduce noise and vibrations in both 130PS and 160PS units, aiding refinement and driveability.

Despite the changes, the latest Insignias’ on the road prices remains the same and all revised models are available to order now.