MOT defects: Service brake performance (Decelerometer, Service brake performance, Brake performance, Brakes)

Brakes

4 defects: 4 major. 1 can be given as an advisory instead.

Certificate wording	Severity	As an advisory	Inspection manual
Service brake performance is causing the steering wheel to severely pull one way	major	None	Brakes imbalance across an axle such that the vehicle deviates excessively from a straight line
Service brake performance is causing the vehicle to swerve to the nearside	major	None	Brakes imbalance across an axle such that the vehicle deviates excessively from a straight line
Service brake performance is causing the vehicle to swerve to the offside	major	None	Brakes imbalance across an axle such that the vehicle deviates excessively from a straight line
Service brake performance grabbing severely	major	grabbing slightly	A brake on any wheel grabbing severely

Other parts in Brakes

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

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