Question to the Department for Transport:

To ask Her Majesty’s Government, in the light of the failure of London, Leeds, and Birmingham to maintain nitrogen dioxide levels within legal limits over the past five years, what assessment they have made of whether relaxing emissions standards for cars is compatible with public health and legal requirements to control urban pollution.

The Government is committed to taking action on vehicle emissions testing that restores consumer confidence and delivers our wider air quality and climate objectives. We strongly support the current Real Driving Emissions agreement, which is expected to significantly reduce average real world NOx emissions from new diesel cars from 2017. It makes type approval requirements for diesel vehicles significantly more stringent by requiring manufacturers to ensure real-world emissions are maintained below 2.1 times the laboratory-testing limit in 2017 and at or below the laboratory-testing limit by 2020 (with a margin for measurement uncertainty). Issues relating to vehicle emissions are considered in the context of the UK Government’s plans for air quality. More detail is set out in the air quality plans published by the Department for Environment, Food and Rural Affairs on the 17^th December.