Vauxhall has addressed a significant BusinessCar criticism of its Insignia with big improvements to the refinement levels on the new model-year version. Refinement is still far from class-leading, but is at least no longer a major issue with the engineering changes.

The model-year upgrade also sees a new four-wheel drive diesel join the range, opening up a new line of opportunity for Vauxhall as there are very few volume models available with all-wheel drive.

The bad news is that the 4×4 system adds around £3000 to the car’s cost, and also tips the Insignia over the 160g/km capital allowance point at 164g/km for the Sports Tourer and 1g/km less for the hatchback. It also makes a 7.8p difference to the cost per mile figure, now at 68.9p, thanks to the higher price, lower efficiency and poorer residual value.

Vauxhall Insignia Sports Tourer 4×4 2.0 CDTi SE Nav
P11D price £28,295
Model price range £18,295-£33,690
Fuel consumption 45.6mpg
CO2 (tax) 164g/km (24%)
BIK 20/40% per month £113/£226
Service interval 20,000 miles
Insurance (1-50) group 23
Warranty 100,000mls
Boot space min/max 540/1530 litres
Engine size/power 1956cc/160hp
Top speed/0-62mph 130mph/10.0secs
On sale September 2010
Score 6/10
Verdict Refinement improvements
make a big different but 4×4
version CO2 are just the
wrong side of 160g/km