There aren't many car noises more concerning than a loud 'clunk' when you turn the steering wheel. One minute you're driving along fine, the next you're navigating a roundabout and your car makes a sound like something's seriously loose underneath. It's a common problem we see in the garage all the time, so don't panic, but it's also not a noise you should ever ignore. That clunking or knocking sound is your car's way of telling you that a component in the steering or suspension system has worn out and now has too much 'play' or movement. These are the systems that keep your tyres firmly on the road and pointing in the right direction, so they're absolutely critical for safety. The sound is often more noticeable at low speeds, like when manoeuvring into a parking space or turning at a junction, because the forces on the suspension are changing direction. This guide will walk you through what that noise usually means, the most common culprits on UK cars, what you can safely check yourself, and what to expect when you bring it into a garage. We'll be honest and straight-talking, so you know exactly where you stand.
What this usually means
In simple terms, a clunking noise when turning means something that should be tight and secure is now loose. Your car's steering and suspension is a complex network of arms, joints, and pivots designed to allow your wheels to move up and down over bumps while also turning left and right. Every single one of these connections is designed to have a precise, controlled range of movement. Over many thousands of miles, rattling over British potholes and navigating countless roundabouts, these joints wear down. The hard-wearing plastic or rubber bushes perish, and the sealed, greased ball joints los
Most common causes (UK cars)
While it could be several things, years of experience tell us the clunk is usually down to one of a few usual suspects. Our rough, pothole-ridden roads in the UK are particularly hard on these parts. * **Worn CV Joint (Constant Velocity Joint):** This is the classic cause, especially if the noise is more of a click-click-click that gets faster as you accelerate through a turn. The outer CV joint allows the driveshaft to deliver power to the front wheels while they steer and move up and down. A split rubber boot is the primary killer; it lets protective grease out and road grime in, quickly des
What to check yourself before booking in
Before you ring the garage, there are a few simple and perfectly safe things you can check that might just save you a trip. This is all about ruling out the simple stuff first. **Do not jack up the car or get underneath it unless you are trained and have the correct safety equipment like axle stands.** First, the obvious one: check your boot. Is the spare tyre, jack, or wheel brace properly secured? A heavy object rolling around in the boot or spare wheel well can make a surprising amount of noise and sound like it's coming from the suspension. Check under the seats and in the glovebox too. Se
Is it safe to keep driving?
I have to be completely honest here: no, it's not a good idea to keep driving with a clunking noise from your steering or suspension. While the cause might be a relatively minor part like a drop link, it could also be something far more serious, like a failing ball joint. The problem is that from the driver's seat, you can't tell the difference. That 'clunk' is a clear warning sign that a critical component has failed or is about to fail. These aren't cosmetic parts; they are fundamental to keeping you in control of your car. If a ball joint or tie rod end were to separate completely, you coul
What a garage will do to fix it
When you bring your car to the garage, the first thing a good mechanic will do is listen. They'll ask you the questions we mentioned earlier: when does it happen, what does it sound like, left or right turn? They might even ask to take a short drive with you to hear the noise for themselves. Next, your car will go up on a vehicle lift so we can get a clear look underneath. The diagnostic process is very hands-on. We'll perform a visual inspection of all the rubber boots on the CV joints, ball joints, and steering rack. A split, leaking boot is a dead giveaway. Then comes the physical check. We
Typical UK repair costs (2025)
The cost to fix a clunking noise can vary widely depending on what's wrong, the make and model of your car, and even where in the UK you are, as labour rates differ. The following are some realistic ballpark figures you can expect to pay at a good independent garage. * **Anti-Roll Bar Drop Links:** This is often the cheapest fix. The parts are relatively inexpensive, and they're usually quick to replace. Expect to pay somewhere in the region of **£80 - £150** per side, including the part, labour and VAT. * **Outer CV Joint:** This is more involved. The driveshaft often has to be removed from t
My clunk is more of a rhythmic click on full lock. Is that a CV joint? — Yes, almost certainly. A rapid, rhythmic clicking or ticking sound that gets faster as you accelerate while turning sharply (like in a car park) is the textbook symptom of a worn outer CV joint. The individual balls within the joint are moving over worn tracks, creating the noise. A 'clunk' can be a more severe version, but that distinct clicking is the classic giveaway for a CV joint that needs r
Why does the clunking sound worse in cold weather? — This is quite common. Metal contracts in the cold, which can slightly increase the amount of 'play' or free space in a worn joint, making any knocking sound more pronounced. Additionally, the lubricating grease inside the joints becomes much thicker and less effective at low temperatures. This means there's less cushioning for any metal-on-metal contact, so the clunk sounds louder until the car ha
Can a big pothole suddenly cause a clunking noise? — Absolutely. A severe impact from a pothole can be the final straw for a part that was already worn, or it can be violent enough to damage a perfectly good component instantly. The sudden, immense shock can break a drop link, destroy the internals of a ball joint, or bend a steering component. If you notice a brand new clunking noise immediately after hitting a particularly nasty pothole, you shoul
Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email bob@bobsmechanicalrepairs.co.uk.