Question to the Department for Transport:

To ask the Secretary of State for Transport, what research her Department is undertaking into developing alternative vehicle fuels, such as synthetic and bio fuels.

In recognition of their established carbon reduction benefits the Government supports the use of low carbon fuels in surface transport vehicles through the Renewable Transport Fuel Obligation (RTFO) scheme. Under the scheme the supply of synthetic fuels and biofuels produced from renewable inputs is eligible for support, where these low carbon fuels meet stringent sustainability criteria.

Whilst my Department does not generally undertake its own research into developing alternative vehicle fuels, it does periodically fund specific research studies to inform policy development and the deployment of such fuels. A recent example is a study on higher bio content fuel deployment in heavy-duty transport, the outputs of which were published online in August 2025.

Additionally, the Department provides funding for latter stage development and deployment of hydrogen, a synthetic fuel, through the Zero Emission HGV and Infrastructure Demonstrator (ZEHID) and the Zero Emission Bus Regional Areas (ZEBRA) programmes.