The online database, which is the biggest of its kind in Europe, has been compiled by the Vehicle Certification Agency (VCA), Society of Motor Manufacturers and Traders (SMMT), and Department for Transport (DfT). It allows users to search for new van models on the UK market and compare their CO2 emissions and the fuel consumption.

Vans make up around 15 per cent of road transport emissions in the UK and their emissions are rising at the highest rate of any road vehicle. If everybody buying a new van bought the most fuel efficient model in its class the average buyer could save up to 17 per cent on both CO2 emissions and fuel costs.

Launching the database at the Low Carbon Vehicle Partnership's annual conference in London today, Transport Secretary Andrew Adonis said: "It's important to help motoring consumers make the right choice, both for themselves and for the environment.
 
"This database is good news for van buyers - it gives them access to emissions and fuel consumption information that could well shape the van they choose, as well as enable them to cut emissions and save money.

Speaking on behalf of the industry, SMMT chief executive Paul Everitt said:

"Van makers are all committed to providing information that will help buyers make better informed choices and this database provides a level playing field for easy comparison. We believe that our efforts in assisting government departments compile this information will not only impact positively on tailpipe CO2 emissions but will also help buyers select the most economical vehicle they need for their business."