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Motor Vehicles: Exhaust Emissions

Asked by Helen HayesLabourDepartment for Energy Security and Net ZeroTabled Answered 9 December 2025UIN 95692

The question

To ask the Secretary of State for Energy Security and Net Zero, what discussions he has held with the Secretary of State for Environment, Food and Rural Affairs and the Secretary of State for Transport regarding cross-government action to address illegal levels of nitrogen oxide emissions from vehicles fitted with defeat devices.

Answered by Michael Shanks

The Secretary of State for Energy Security and Net Zero (DESNZ) engages regularly with the Secretary of State for Environment, Food and Rural Affairs (Defra) and the Secretary of State for Transport (DfT) on climate change mitigation. Transport policy, including transport emissions, is led by DfT. The Driver and Vehicle Standards Agency is investigating cases of possible non-compliant diesel emissions in cars and vans. The investigations aim to ensure any non-compliance found is fixed as soon as reasonably possible, working together with manufacturers to achieve real-world impacts on air quality.

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