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The AIR Index – Methodology Infographic
Every AIR Index rating requires at least two cars of the same type to be tested at least three times, recording at least five x 10km trips, which each take approximately 20 minutes per trip.
Each car is independently tested in accordance with a voluntary standardised European protocol CWA 17379.
This infographic shows a high level view of the methodology used by AIR when testing vehicles for rating in the AIR Index.
Would you donate £10 to support the work of the AIR Alliance?
We provide practical solutions, including the AIR Index vehicle ratings, to ensure that independent, scientifically robust data are available to inform discussions and policy decisions which can help reduce the impact of harmful vehicle emissions. We are guided by a committee of the world's leading emissions and air quality experts who give their time and expertise to support our common goal of improving air quality and tackling the climate crisis. The AIR Index ratings and our expertise are used by public authorities and organisations across Europe to inform policy decisions. The AIR Alliance is a not-for-profit organisation and we fund our own testing and scientific programmes to provide AIR Index ratings free of charge. Please would you consider making a donation to support our work?
A small donation can make a big difference and takes moments to send. If you can. please consider supporting us with a regular amount each month.