The Department has not completed any assessment on the air quality impact of the decision to delay the end of sale date for new diesel and petrol cars from 2030 to 2035. The Government has however laid the Vehicle Emissions Trading Schemes Order 2023 before the Houses of Parliament, the Scottish Parliament and the Senedd Cymru on 16th October (which implements the Zero Emission Vehicle (ZEV) mandate across Great Britain). The ZEV mandate is Government biggest carbon reduction measure and will significantly reduce air pollutant emissions as set out in the cost benefit analysis published by the Department. The Vehicle Emissions Trading Schemes Order 2023 (legislation.gov.uk)