The groups are Friends of the Earth, the Aviation EnvironmentFederation, the National Society for Clean Air, and the Heathrow Association for the Control of Aircraft Noise.
"Business as usual is not going to move us towards a carbon neutral world, " said Jeff Gazzard, of the Aviation EnvironmentFederation, who nevertheless welcomes the Davos declaration.
The European Federation for Transport and Environment said in a recent report that around 75% of the region's auto makers were failing to improve fuel efficiency and meet the voluntary targets set by the EU, having reduced CO2 emissions by only around 1% from last year.