Best in class:
Volvo S80 1.6 TD DRIVe - 119g/km
Volvo V70 1.6 TD DRIVe - 119g/km
Best of the rest:
BMW 520 D - 132g/km
Mercedes E 220 CDI Blueefficiency - 137g/km
Audi A6 2.0 TDI 136 E - 139g/km
They're all diesels, and all turn in good CO2 figures given their size. For the first time in any segment, Volvo now has two models at the top of the class, thanks to its DRIVe programme. A figure of under 120g/km is a real breakthrough for an executive car. The BMW 520d has slipped down to third place, just ahead of the Mercedes E220 CDI Bluefficiency.
