MOT defects: Valves (Air and vacuum systems)

Brakes

6 defects: 1 dangerous, 4 major, 1 minor. 3 can be given as an advisory instead.

Certificate wording	Severity	As an advisory	Inspection manual
Valves leaking such that brake functionality is affected	dangerous	None	Valve leaking such that brake functionality is affected
Valves damaged and function impaired	major	damaged but function not impaired	External damage likely to affect the function of the braking system
Valves leaking	major	slightly damaged or slight leak	Valve damaged or excessive air leak
Valves inadequately mounted	major	None	Valve insecure or inadequately mounted
Valves insecure	major	None	Valve insecure or inadequately mounted
Valves has an excessive discharge of oil	minor	slight discharge of oil	Excessive oil discharge from a compressor or brake valve

Pre-2018 names for this part

Dabers ANPR shows the full MOT history, defects included, for the car in any photo. How it works

Contains public sector information from the DVSA licensed under the Open Government Licence v3.0.