According to the data company JATO Dynamics, Fiat already has the most fuel-efficient car line-up in Europe, and although it sells one low-CO2 model - the Bravo Eco - the Italians accept that other companies with a range of super-clean models are grabbing the green headlines.

The Fiat Group, which includes Alfa Romeo, Lancia, Ferrari and Maserati, will announce new environmental policies later this year. CEO Sergio Marchione wants Fiat to be acknowledged as the greenest car brand in the world.