Wales engine idling fines rise to £75 to £150 from 30 September

Why Wales has raised the engine idling penalty

The Welsh Government confirmed the higher penalties in a release dated 29 September 2026. Its stated aim is to reduce exposure to exhaust pollution, particularly for children, older people and people with existing health conditions. It identifies schools and healthcare settings as places where switching off can protect people nearby.

The government marked the change at Marshfield Primary School in Newport, where pupils had designed an anti-idling banner through a project with Newport Council. The school setting illustrates the behaviour being targeted: a driver parked while waiting for somebody, leaving an engine running beside people who are breathing the exhaust.

Why the fine is not £150 everywhere in Wales

The amendment regulations let a council choose a single amount within the £75 to £150 range for all stationary idling offences in its area. Alternatively, it can set a scale with different amounts for different circumstances, including how close the offence is to particular premises or types of premises.

Before an offence occurs, the council must have set and published the amount or scale on its website. Where a scale applies, the notice must identify the relevant circumstances. A headline maximum therefore cannot tell you the amount a particular council will charge. Check its published policy and the notice itself.

The regulations also change the late-payment increase to 50% of the amount stated on the notice. They restrict how councils use the money: enforcement and administration, local air-quality improvements, or reducing public exposure to transport emissions. It is not unrestricted income for other council services.

An officer must ask the driver to switch off first

The council enforcement process includes an opportunity to comply. The Welsh Government's consultation response describes authorised officers asking drivers to stop an engine where they reasonably believe a stationary idling offence is taking place. A fixed penalty can follow a refusal. Its draft enforcement guidance repeats that sequence.

That distinction matters when reading warnings about fines for waiting in a car. The council power is not described as an immediate charge triggered simply by an engine being on. Equally, being asked to switch off is a request to end the behaviour, not permission to carry on until a notice arrives.

The government's response to concerns about the impact on lower-income drivers emphasised that complying with the request avoids a fixed penalty. Its approach treats penalties as a last resort alongside public awareness and encouragement to stop unnecessary idling.

Traffic queues and fault diagnosis remain different from parking

Rule 123 of the Highway Code already prohibits unnecessary engine running while stationary on a public road, and leaving a parked vehicle unattended with its engine running. It allows an engine to run when a vehicle is stationary in traffic or when diagnosing faults. Those distinctions remain relevant after the Welsh penalty increase.

The Code advises applying the parking brake and switching off if a stationary vehicle is likely to remain so for more than a couple of minutes. That is practical advice about reducing emissions and noise, not a published countdown after which a council automatically issues a fine.

Welsh Government advice gives waiting to collect or drop off passengers, charging a phone, listening to music and running heating or cooling for comfort as unacceptable reasons for unnecessary idling. Plan to switch off when parked rather than keep the engine running for those activities.

Clearing a windscreen needs care, not a blanket exemption

The Welsh Government's public advice recognises de-icing and demisting before a journey as situations where an engine may need to run. Its draft council guidance adds an important qualification: there is no specific idling exemption for clearing windscreens, even though the Highway Code requires a clear view before driving.

The draft suggests councils may take a practical approach, such as advising on alternative ways to clear glass. Drivers should not treat that as a guaranteed exemption or drive before they can see properly. The distinction is between preparing a vehicle safely and leaving its engine running simply to make waiting more comfortable.

The council guidance consultation does not delay the new range

The consultation on local authority guidance opened on 11 September 2026 and closes on 4 December 2026. It asks for views on how councils communicate about idling and use their enforcement powers consistently. The supporting PDF is draft guidance, so its suggested approaches should be read in that context.

The consultation page separately confirms that the regulations came into force on 30 September 2026. The open consultation is about guidance for implementing the powers; it does not leave the higher penalty range waiting for a future decision.