Are you looking to buy a new car? A number of T&E member organisations have created lists of the cleanest models available.

Germany (VCD)
www.vcd.org/auli_2009_2010.html

Netherlands (Natuur en Milieu)
www.top10.hier.nu

Portugal (Quercus)
www.top10.pt

Switzerland (VCS-ATE)
www.verkehrsclub.ch/de/politik-kampagnen/ratgeber/auto-umweltliste.html

UK (Environmental Transport Association)
www.eta.co.uk/car_buyers_guide/ten_best

T&E doesn't publish a list of green cars, but we do study the progress of car manufacturers in reducing average CO2 emissions, based on sales in Europe.
Download the latest report (2007 sales)