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Grinding Or Buzzing Noise When Pulling Away

A short buzz, grind or pedal pulse in the first few metres after starting is usually the ABS system running its self-test. It is normal on many cars.

Normal risk

Normal if it is brief and only once per journey. If the ABS light stays on or braking feels different, have it checked.

Short answer · Why does my car make a noise when I first drive off?

Many ABS systems test their pump and valves once at low speed after the engine starts. You can hear a short buzz or grinding from the front of the car and sometimes feel it in the brake pedal. If the noise happens every time you brake, or the ABS light is on, the cause is something else.

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Safe checks you can do

  1. Note when it happensOnce per journey at low speed after starting: typical self-test.
  2. Check the ABS lightIf it stays on after starting, the system has found a fault.
  3. Compare with brakingA grinding that occurs on every stop is likely brakes or ABS sensors.

Questions that narrow it down

  1. Is it only once per trip?The self-test is likely.
  2. Is the ABS light on?A fault is stored; read the codes.
  3. Does the pedal pulse on normal stops?ABS may be activating unnecessarily.

Possible causes

Listed without ranking. Use the questions above to see which ones fit your car.

  1. ABS self-testNormal brief pump and valve check.
  2. Wheel speed sensor faultCan trigger ABS at low speed.
  3. Worn brakesGrinding every time you brake.

Questions about Grinding Or Buzzing Noise When Pulling Away

Can I switch the self-test off?

No, and there is no need. It confirms the system works.

Why does it sound louder in some cars?

The location of the ABS unit and sound insulation vary.