Welsh Government consultation launched on tougher fines for vehicle engine idling

The Welsh Government has opened a consultation on plans to increase fines for drivers who leave their vehicle engines running while stationary on public highways.
Under current law, drivers can be fined £20 for engine idling, rising to £40 if the penalty is not paid on time.
The government proposes raising the penalty range to between £50 and £100, giving local authorities the flexibility to set fines that reflect local needs.
Stationary engine idling contributes to air and noise pollution, wastes fuel, and can affect vulnerable groups, such as children outside schools.
The consultation document describes idling as “an unnecessary contributor to air pollution and noise,” noting the potential health risks involved.
The current penalty, set more than 20 years ago, has not kept pace with inflation and is considered too low to deter the behaviour effectively.
The Welsh Government says the proposed increase will support local authorities in taking more effective enforcement action.
If a fine is not paid within the specified period, the penalty would increase by 50%, meaning a maximum fine could reach £150.
Income from fines would be used specifically for measures to improve air quality, ensuring enforcement revenue supports environmental improvements.
The consultation also emphasises encouraging drivers to reduce idling through awareness campaigns and behaviour change, with penalties seen as a last resort.
The Welsh Government is committed to improving air quality as part of its Clean Air Plan for Wales and the recent Environment (Air Quality and Soundscapes) (Wales) Act 2024.
Responses to the consultation can be submitted until 30 September 2025.
If approved, new regulations would come into force in August 2026 alongside a public awareness campaign.
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