The Spanish Government has revealed that it wants to increase the tax on diesel vehicles because they ‘contaminate more’. The change will be a modification on the vehicle matriculation tax. The Secretary of State for the Environment, Federico Ramos, gave the news after meeting with the environment experts and said that in principle the regional administrations are in agreement. The local City and Town Halls say they now want to first analyse the financial consequences for them. Diesel vehicles not only pollute with CO2 but also emit Nitrogen Dioxide, and particles in suspension.