The two vehicles are the 2009 VW Jetta TDI, which won in 2008, and the 2010 Audi A3 TDI, which won in 2010. Green Car Journal (GCJ) did not say if it would retroactively name any replacement winners.
This is the first time in the history of the Green Car Of The Year Awards that the honor has been taken away from the winner. In a statement announcing the change, GCJ publisher Ron Cogan wrote that, "this award rescission should not cast a negative light on advanced diesel technology in general. Many diesel models from a variety of auto manufacturers meet EPA and CARB emissions standards, bringing with them higher fuel efficiency, decreased petroleum use, and lower carbon emissions – all important environmental goals."