Parking brake (handbrake) not working well enough

How it can appear on an MOT certificate

  • “Parking brake efficiency below requirements”
  • “Parking brake lever has excessive movement”
  • “Parking brake inoperative on one side”

What it is

The parking brake holds the car when it's parked. It may be a lever, a pedal or an electronic switch, and it usually works on the rear brakes.

Why it matters

A weak parking brake may not hold the car on a slope, so it could roll away. Too much lever travel usually means the cable needs adjusting or the rear brakes need attention.

What to check when viewing a car

On a test drive, stop on a slope and apply the parking brake to see whether it holds. Count the clicks on a lever handbrake: a lever that comes up very high suggests adjustment is needed.

Has the car you're looking at had this before?

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What the MOT categories mean

Dangerous
A direct and immediate risk to road safety, or a serious impact on the environment. The car fails and shouldn't be driven until it's repaired.
Major
It may affect the car's safety, put other road users at risk or harm the environment. The car fails and should be repaired straight away.
Minor
No significant effect on safety or the environment. The car passes, but it should be repaired as soon as possible.
Advisory
Something to keep an eye on that could need repairing in future. The car passes.

Related: brakes

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Buying a used car?

General information about this type of MOT defect, not advice about a particular car. How serious it is depends on the car; have any car you're buying inspected by a qualified mechanic.