In-service exhaust emission standards for road vehicles
A booklet about the procedures used to check vehicle exhaust emissions during an MOT and roadside checks.
PDF, 817KB, 222 pages
This file may not be suitable for users of assistive technology. Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email firstname.lastname@example.org. Please tell us what format you need. It will help us if you say what assistive technology you use.
This booklet explains the vehicle exhaust emissions check procedures testers and vehicle examiners use during MOT tests and roadside checks.
It also contains emissions limits for vehicles fitted with advanced emissions control systems, such as 3-way catalytic converters, and offers general advice to motorists and vehicle operators on submitting vehicles for test.
The booklet deals with petrol and diesel vehicles separately.