Efforts to reduce emissions of CO2 and pollutants from cars has resulted in significant technological advances and the replacement of old vehicles. However, pollution levels remain high, requiring new effective measures. The EU funded uCARe project will propose measures based on the collection of dispersed high-quality data and by studying motorists’ behaviour. It will also analyse the impact of user-related reduction measures and possibilities to improve existing pollutant emission legislation and policies. It will create easy to use instruments based on measures targeting the reduction of emissions. The project will develop information campaigns through stakeholders and provide technical data for the improvement of emission legislation.