How to tell if your shock absorbers are worn

Shock absorbers wear out slowly; you do not notice the car handling a little worse every day. Yet worn shock absorbers directly affect braking distance and how well the car grips in corners.

Signs

1. Oil on the body of the shock. If the shock absorber is oily and covered in dust, the oil inside is leaking out.
2. The car keeps bouncing after a bump. A healthy shock absorber stops the movement after the body rises and falls once or twice.
3. Excessive lean in corners and a floating feeling at high speed.
4. The nose dives noticeably under braking.
5. Wavy, cupped wear on the tyres. The tyre does not stay fully in contact with the road, so it wears unevenly.

A simple check

With the car standing, push down hard on one corner and let go. The body should rise once and settle. If it goes up and down two or three times, have the shock absorber checked. This test only gives a rough idea; for an accurate result you can have it measured on a shock absorber tester at a workshop.

What to watch when replacing them

• If the top mount, dust cover and bump stop are also worn, renew them at the same time.
• Removing the coil spring requires a proper spring compressor; this job takes experience.
• Have the wheel alignment checked after the replacement.

You can see shock absorbers and control arms that fit your car in the front suspension & steering parts category by selecting your vehicle.

FAQ

How long do shock absorbers last?

It varies a lot with road conditions and driving style; having them checked at regular intervals is the best approach.

Can a single shock absorber be replaced?

It is not recommended. Both shock absorbers on the same axle should be replaced together.

This guide gives general information. Torque values, fluid quantities and service intervals vary by vehicle; follow your owner's manual. If you are unsure about safety-related work, ask a mechanic.