Your Subaru is telling you something with that noise, and it's worth listening. Maybe it's a hollow clunk every time you drop into a rough patch on SR-49, or a squeak that kicks up after a rainy morning on the I-80 grades. Either way, your suspension is handing you real diagnostic information. A clunk and a squeak aren't the same problem. They aren't the same parts, and they aren't the same level of urgency. The sound pattern itself points toward the answer before you ever get under the car.
Schedule a service appointment at Gold Rush Subaru if you'd rather have a trained technician read the noise directly.
What's Actually Going On Under There?
Suspension parts make noise for one of two reasons, and both come down to wear, either a component has developed play it shouldn't have or the rubber isolators between the metal parts have dried out and lost their ability to absorb friction, and the sound you hear is just the byproduct of whichever failure is underway. Match what you're hearing to the table below and you'll have a working diagnosis before you drive in.
| What you hear | When it happens | Likely cause | How urgent |
|---|---|---|---|
| Hollow clunk, one knock | Over a bump or pothole | Worn strut mount or sway bar end link | Moderate (schedule within a few weeks) |
| Rapid clank-clank | Over bumps, one or both sides | Sway bar end link failure | Moderate, schedule soon |
| Grinding creak while turning | Slow turns, parking lot speeds | Seized strut mount bearing | Moderate to high, affects steering geometry |
| High-pitched squeak | Cold mornings, after rain, low speed | Dried or cracked rubber bushings | Low to moderate, watch and confirm |
| Thud plus slow rebound | Any bump, car bobs instead of settling | Worn strut or shock absorber | High, braking distance is reduced |
| Speed-building hum | Highway driving, consistent | Worn wheel bearing | High, do not delay |
Which noises can wait, and which can't? A noise that only turns up over a speed bump is annoying, but you can usually live with it in the short term. A noise paired with a handling change, longer stopping, or a pull to one side? That's a different conversation entirely.
Sway Bar End Links and Strut Mounts Lead the List
Auburn's roads work a Subaru's suspension harder than flat-city driving ever does, and the small connecting parts feel it first, because the I-80 corridor through the Sierra Nevada foothills brings real elevation change and a compression-and-rebound cycle on every descent over pavement that swings from summer heat to foothill freeze-thaw. SR-49 through town adds surface irregularities from ongoing road maintenance. All of it speeds up wear on the hardware that holds a Subaru's suspension geometry together.
Sway bar end links are the short rods that tie the sway bar to the suspension at each corner. Subaru's parts documentation describes a worn or broken sway bar end link as producing a "rapid clank-clank noise when going over bumps." When a clunk complaint comes in, these are among the first parts our service team checks. They carry load through every bump and every corner, and high-mileage foothill driving adds up fast.
Strut mounts sit at the top of each front strut, joining the strut assembly to the vehicle body. Every mount holds a bearing that lets the strut rotate as you steer. When that bearing corrodes or seizes (temperature cycling and moisture intrusion get it there over time), turning the wheel throws a grinding creak from the strut tower. You'll feel it under load at parking-lot speed. Subaru issued TSB 05-90-24R specifically addressing a strut design concern on 2019 through 2023 Ascent models. NHTSA also documented a lower control arm ball joint recall (23V392000) affecting a subset of 2023 Ascent vehicles. If you drive one, run your VIN at NHTSA.gov to confirm your recall status.
The Outback draws consistent owner-reported strut mount noise at higher mileage, especially in vehicles with sustained rough-road exposure. One thing is worth knowing first. Replacing struts does not fix bushing noise, because those are different components. We've had cars come in after a strut replacement elsewhere, clunking the same as before, because the strut mount bearing was the actual source all along.
DIY vs. Letting Our Team Handle It
You can try one thing at home before you hand this off, and there's a clear line where you should stop, because a squeak in the rubber is fair game for a driveway test while anything involving struts, ball joints, or control arm bushings needs a lift and torque specs you can't fake.
The reasonable home step. A persistent squeak that shows up on cold mornings or after rain and fades once the car warms is often dried-out sway bar bushings. Rubber bushings dry out as they age, and when the temperature drops or moisture shifts the friction at the contact point, the rubber grabs the metal instead of sliding smoothly. A rubber-safe silicone spray at the sway bar bracket mount points is a legitimate diagnostic step. If the squeak clears for a few days and comes back, you've confirmed the location. The spray fixes nothing on its own. Still, the information is genuinely useful.
Where to stop. Any work involving struts, ball joints, or control arm bushings calls for a lift, proper torque specifications, and (critically) a four-wheel alignment after any strut replacement. Skipping the alignment isn't a minor oversight. It drives uneven tire wear that can burn through a full set of tires sooner than you should need them. None of that is an upsell. Uneven wear is just what a half-finished job produces.
Crosstrek owners on rough foothill roads are a good example of the pattern. The Crosstrek's Subaru Symmetrical AWD and 9.3 inches of ground clearance (per Subaru's official specs) invite exactly the kind of use that stresses suspension hardware, so it pays to stay ahead of these wear items instead of chasing a noise months after it started. A proper inspection tells you what needs attention now and what can wait.
Schedule a Suspension Inspection
The foothill driving that makes a Subaru the practical choice around Auburn is also what puts real work through a suspension system over time. Read the noise early.
Frequently Asked Questions
Is a clunking noise in my Subaru's suspension actually dangerous?
It depends on which component is making the noise and whether your handling has changed. A worn sway bar end link produces a clunk but typically doesn't affect steering geometry significantly in its early stages. A failed strut mount bearing, cracked ball joint, or worn-out strut are more serious: they can reduce braking effectiveness and alter steering response. If the clunk is paired with any change in how the car drives, a pull to one side, or the nose dipping further than normal under braking, treat it as urgent and have a qualified technician inspect it right away rather than scheduling it for later.
Why does my Subaru squeak in the morning or right after rain, but the noise goes away as I drive?
That temperature-and-moisture pattern is a reliable indicator of aged rubber bushings. Bushings are the rubber (or polyurethane) cushions located at every pivot and mounting point throughout the suspension. As exposure to heat cycles and ozone causes them to dry out and develop micro-cracks, they begin gripping the metal sleeve rather than moving smoothly against it. The result is a squeak or creak that is most pronounced when the rubber is cold and stiff, and that fades once the material warms and flexes. Confirming silicone spray at the suspected contact point can identify the location temporarily, but deteriorated bushings need replacement for a lasting resolution.