Saab has introduced revisions to its 9-3 for the 2012 model year that will see diesel SportWagon versions fall under 120g/km of CO2 for the first time.

It means the estate version using the 180bhp twin-turbo diesel engine now joins the saloon in its class-leading CO2 emissions per bhp.

The model year changes also bring in revised bumper designs, new headlamps and trim enhancements inside.

As well as offering 119g/km, the 180bhp TTiD also achieves 62.8mpg on the combined cycle.