The new Insignia has a range of up to 1175 miles, Vauxhall has claimed.

Vauxhall’s engineers have reduced the vehicle’s drag coefficient to under 0.25 for the Insignia hatchback and 0.28 for the Sports Tourer.

Insignia 2.0 CDTi ecoFLEX models with start stop also feature an additional, ultra-modern aerodynamic element: an active front air shutter. Air flowing through the front grille to cool the engine usually accounts for up to eight per cent of total vehicle air drag. The shutter in the lower front grille automatically closes to prevent air causing turbulence.

These changes help the ecoFLEX variant achieve CO₂ emissions of 99g/km and 76.3mpg on the combined cycle.

This gives a range of up to 1175 miles, which means that an average company car driver could have to fill up just 18 times a year, according to data provided by leasing company Zenith.

“Taking all improvements into account, Vauxhall has succeeded in giving the new Insignia benchmark levels of aerodynamic performance along with rock bottom CO₂ emissions of just 99g/km on the new 2.0 CDTi engine,” said Peter Hope, Vauxhall’s marketing director.

Available as a five-door hatch, four-door saloon and Sports Tourer, the new range starts at £16,279. As with all new Vauxhalls, the New Insignia comes with a Lifetime Warranty that gives first owners peace of mind as long as they own the car.

Order banks for the New Insignia are now open, with first cars reaching customers in October.