Iit is already illegal to use a vehicle on UK public roads if its factory-fitted car emission controls have been deleted, disabled, or removed.
The Legal Framework
Under the Road Vehicles (Construction and Use) Regulations (specifically Regulation 61a), it is an offense to use a vehicle on a public road that has been modified in a way that causes it to no longer comply with the air pollutant emissions standards it was designed to meet.This ban covers all major emission control systems, including:Diesel Particulate Filters (DPF) and Gasoline Particulate Filters (GPF)Exhaust Gas Recirculation (EGR) valves and coolers (whether blanked off or mapped out)Catalytic ConvertersAdBlue / SCR (Selective Catalytic Reduction) systems
Penalties and Consequences
MOT Failure
During an MOT test, inspectors check for standard emissions equipment. If a component like a DPF or catalytic converter has been removed or visibly tampered with, it results in an automatic MOT failure, making it illegal to drive the vehicle on the road
.Fines:
Driving a modified vehicle that breaches these standards can incur roadside fines of up to £1,000 for a car and £2,500 for a light commercial vehicle/van.
Invalidated Insurance:
Removing emission controls is a modification that affects roadworthiness. Failing to declare this modification to your insurer typically voids your policy, leaving you personally liable in the event of an accident.
Exceptions
Modifying or deleting emission controls is only legal if the vehicle is used exclusively off-road, on private land with no public access, entered into dedicated motorsport/track events, or intended strictly for export to countries where such modifications are permitted.
Last edited by JohnHarris; 30/08/26 06:11 PM.
