Why does my car knock when going over bumps?

Worn suspension — usually drop links, anti-roll bar bushes, top mounts, or wishbone bushes. All are routine wear items on UK roads.

Here's a quick, honest answer from a working UK mechanic — what causes it, what it costs to fix, and what to do next.

Can I drive on it? — Short term yes, but get it inspected — broken drop links can damage the anti-roll bar and degrade handling.

Why does my car knock only when cold? — Bushes stiffen in cold weather; small play becomes audible until the rubber warms up.

Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email [email protected].