Question to the Department for Transport:

To ask Her Majesty's Government what is their assessment of the cost of implementing a national diesel scrappage scheme as a part of their plans to improve air quality.

A national diesel scrappage scheme was considered as a policy option in the development of the UK plan for tackling roadside nitrogen dioxide concentrations. The cost of such a national scheme was estimated to be up to £60 billion.

On 22 November we launched a consultation on additional measures to support individuals and businesses affected by local NO₂ plans. Options considered include retrofitting vehicles, support for car clubs, vehicle scrappage or improved public transport offers.