Biofuels such as bioethanol, biodiesel and biogas, made from plant matter (colza, sunflower, beet), are an excellent alternative to conventional fossil fuels, With extremely low CO2 emissions. A full 75% of Renault vehicles sold in Brazil are flexfuel, i.e. running on petrol or ethanol, produced from the country’s abundant sugar cane production.
Petrol is already being replaced by other fossil energy sources. Liquefied petroleum gas (LPG), consisting of butane and propane, is widely used in Europe today. Burning this fuel emits fewer CO2 emissions than burning petrol.
Compressed natural gas (CNG) comes from natural deposits. It is less widely used than LPG but has even more impressive environmental credentials.
Renault is developing hybrid prototypes, combining a combustion engine with an electric motor. This technology cuts fuel consumption and CO2 emissions. Renault revealed the hybrid Ondelios concept car at the 2008 Paris Motor Show.