Question to the Department for Transport:

To ask the Secretary of State for Transport, what assessment her Department has made of the potential health and social impacts of illegal vehicle emissions on communities living in areas that already breach air-quality standards; and how those findings inform the Government’s net-zero and energy-efficiency policies.

Defeat devices are illegal, misleading for drivers and can have negative health impacts on the public. The Department for Transport has not conducted a specific assessment of the potential health and social impacts of illegal vehicle emissions on communities living in areas that already breach air-quality standards.

Local authorities are best placed to determine the most effective route to reducing nitrogen dioxide in their cities, and we continue to support them in meeting legally binding obligations to improve air quality. This includes implementing seven Clean Air Zones and other measures such as improved traffic management, cycle lanes and funding for vehicle upgrades. Evidence shows that Clean Air Zones are effective in reducing air pollution.

The government is committed to reducing emissions from diesel cars by reinstating the 2030 phase-out date for new cars relying solely on internal combustion engines, and by committing to phase out all new non-zero emission cars and vans by 2035.