Photos: Volvo's DRIVe eco cars (C30, S40, V50)

C30 SportsCoupe
Rated at 64.2mpg and 115g/km CO2, this coupe's a massive improvement on the emissions of the normal C30. The normal 1.6 litre model spews a relatively huge 167g/km.

Like the rest of the new DRIVe range, Volvo says it's achieved the low emissions through reduced air resistance and rolling resistance, higher gear ratios and a more efficient engine.