Britain's greenest cars
Greenest Compact Executive: Saab 9-3 1.9 TiD 120
The diesel version of the Saab 9-3 is so good on CO2 emissions that it equals the output of the Ford Ka city car.
The saloon version is rated at just 147g/km closely followed by the estate and returns a combined 52.3mpg. Get out of town and the official figure rises to 64mpg.
There is, however, one more laurel in the 9-3's environmental crown: the 120bhp diesel and more powerful 148bhp version come with a particulate filter. This maintenance-free trap so thoroughly eliminates soot from the tailpipe emissions that the 9-3's particulate figure is officially recorded as 0.000g/km.
The Saab may not match the driver appeal of a BMW 3 Series or Mercedes
C-Class, but the 1.9 TiD has them licked on green performance.
Price: From £19,460
MPG: 52.3
CO2 emissions: 147g/km
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