How to Stop That Annoying Clicking Noise in Your WRX

How to Fix Clicking Noise

A persistent clicking noise can be a frustrating and concerning issue for any 2010 Subaru WRX owner. While it might sound minor, it often points to a specific, loose component that needs attention. Based on real-world reports from owners, the culprit is frequently related to the vehicle's aerodynamic accessories. As one owner shared, "I have a thing for silver Subarus with black wings and 4 pots I guess," highlighting the common aftermarket and OEM spoiler culture within the WRX community which can lead to these noises (source).

Symptoms

The primary symptom is an intermittent or constant clicking, tapping, or knocking sound that seems to originate from the rear or roof area of the vehicle. Owners often describe it as a noise that "bugs me," indicating it's more of an annoyance than a sign of immediate catastrophic failure, but it's persistent enough to seek a fix. The sound may change with speed, wind conditions, or going over bumps, suggesting it's related to a component that is loose and can vibrate or flutter.

You might notice the noise is more pronounced at highway speeds when wind pressure increases against the body of the car. It can sometimes be mistaken for a suspension knock, but the location—higher up on the vehicle—is a key differentiator. Another telltale sign is that the noise may come and go depending on the day, directly correlating with wind direction and intensity, pointing squarely at an exterior trim or spoiler issue.

In some cases, the sound may have a metallic or plastic rattling quality to it. It's crucial to listen carefully to the character of the click. Is it a sharp, singular tap? Or is it a rapid, fluttering rattle? This distinction can help narrow down whether it's a single bolt working loose or a larger panel, like a spoiler, that has play in its mounting points. Ignoring it can lead to wear on the mounting holes or, in a worst-case scenario, potential damage to the component or paint.

Most Likely Cause

Based on aggregated owner discussions, the most likely cause of a clicking noise on this model is a loose or improperly secured roof spoiler (wing). The 2010 WRX, especially in premium or limited trims, came with a rear roof spoiler as a standard or common feature, and it's an extremely popular aftermarket addition. Over time, the constant exposure to wind force, vibration, and temperature cycles can cause the spoiler's mounting hardware to loosen.

The spoiler is typically attached with several bolts that go through the trunk lid or hatch, secured with nuts on the inside. If these were not torqued properly during installation, or if the factory thread-locking compound has degraded, the bolts can begin to back out. This creates a tiny gap between the spoiler base and the body panel. When wind hits the spoiler at speed, it can cause the entire assembly to lift and settle minutely, creating a distinct clicking or knocking sound. Furthermore, aftermarket installations or previous repairs might not have used all the proper spacers or gaskets, exacerbating the issue.

How to Diagnose

Diagnosing a spoiler-related click is a straightforward process that requires no special tools, just a careful ear and some hands-on investigation.

1. Locate the Sound: Have a friend drive the car at a steady speed on a smooth road where the noise occurs while you listen from the passenger seat. Try to determine if the sound is coming from the rear, specifically from the roof/trunk area rather than the wheels or suspension.
2. The Push Test: When the vehicle is parked, firmly press and wiggle the roof spoiler. Apply pressure upward, downward, and side-to-side. Listen and feel for any movement, play, or clicking. Any noticeable movement confirms the spoiler is loose.
3. Visual Inspection: Open the trunk or hatch. For roof spoilers, you will see the mounting points from the inside—usually circular plastic access plugs or areas of the headliner that can be pulled back. Remove these covers and visually inspect the mounting nuts and bolts. Look for signs of rust, which can indicate moisture intrusion from loose fittings. As one owner found during a major teardown, "Upon inspection the back turbo housing has a crack," which underscores the importance of a thorough visual check for even hairline issues (source).
4. Check for Witness Marks: Look around the base of the spoiler on the outside, where it meets the paint. Are there any polished or rubbed areas? These "witness marks" indicate where the spoiler has been moving against the body.

Step-by-Step Fix

Fixing a loose spoiler is a perfect DIY job that can be completed in under an hour.

Tools & Parts Needed: Socket set (likely 10mm or 12mm), trim removal tool, torque wrench (in-lb recommended), medium-strength threadlocker (blue Loctite 242), clean rag, isopropyl alcohol.

1. Open the Trunk/Hatch: Remove all interior trim panels or access plugs that conceal the spoiler's mounting nuts from inside the vehicle. Use a plastic trim tool to avoid scratching the plastic.
2. Clean the Threads: Using the appropriate socket, loosen each mounting nut but do not remove it yet. Once all are loose, have a helper hold the spoiler firmly in place from the outside.
3. Apply Threadlocker: Remove one nut at a time. Clean the exposed bolt threads with isopropyl alcohol and a rag. Apply a small drop of blue threadlocker to the threads.
4. Re-seat and Torque: Have your helper ensure the spoiler is perfectly seated. Re-install the nut and tighten it finger-tight. Repeat for all mounting points.
5. Final Torque Sequence: Using your torque wrench, tighten the nuts in a criss-cross pattern (similar to lug nuts) to the manufacturer's specification. If you cannot find the spec, a general rule for body panel bolts is 12-15 ft-lbs (144-180 in-lbs). Do not overtighten, as you can crack the spoiler base or strip the threads.
6. Reassemble: Replace all interior trim panels and access plugs.
7. Test Drive: Take the vehicle for a test drive on the same road where the noise was present. The clicking should now be eliminated.

As one owner reflected on modifications, "It's a high mile engine but had zero aftermarket parts installed aside from an access port," reminding us that sometimes the simplest factory components, like a spoiler, are the source of issues, not complex aftermarket parts (source).

Parts and Tools Needed

• Threadlocker, Medium Strength: Loctite 242 (Blue) is ideal. Prevents bolts from vibrating loose without being permanent.
• Socket Set & Ratchet: Standard metric sizes, typically 10mm or 12mm for spoiler nuts.
• Torque Wrench: A 1/4-inch or 3/8-inch drive wrench that measures in inch-pounds is best for this application to avoid over-torquing.
• Trim Removal Tool Set: Plastic pry tools to safely remove interior access panels without damage.
• Cleaning Solvent: Isopropyl alcohol for degreasing bolt threads before applying threadlocker.
• Replacement Spoiler Gasket/Seal (If Needed): If the original foam or rubber seal is cracked or crushed, a new one (Subaru part number specific to your spoiler) will prevent water leaks and may reduce movement.

Real Owner Costs

The cost to fix this is overwhelmingly in labor if you go to a shop, as the parts are minimal.

• DIY Cost: $10 - $25. This covers a small bottle of threadlocker and some isopropyl alcohol. If you need to buy a basic torque wrench, add $40-$60 for a quality tool you'll use again.
• Professional Repair Cost: $100 - $200. A shop will typically charge 1-1.5 hours of labor at their hourly rate (often $100-$150/hr) to diagnose, remove trim, re-torque, and reassemble. One owner in the sales world noted, "I work at Subaru and have been here for 2 years this month... I’m averaging 15 cars a month," indicating that dealerships and shops are very familiar with such trim-related issues on these popular cars (source).
• Worst-Case Scenario: If the spoiler mounting holes have become wallowed out from prolonged movement, a more involved repair involving larger washers or even bodywork might be needed, potentially raising the cost to $300-$500.

Prevention

Preventing the clicking noise from returning is simple. Whenever you wash your car or perform routine maintenance, make it a habit to give the roof spoiler a firm wiggle test. If you ever have the spoiler removed for paint or repair, insist that the installer uses new thread-locking compound on the bolts and properly torques them to spec. Avoid putting excessive downward pressure on the spoiler when washing or drying the car, as this can stress the mounts over time. Finally, if you install an aftermarket spoiler, ensure you use all provided hardware and seals, and follow the torque specifications meticulously.

What Owners Say

Real experiences from SUBARU owners:

Owner Experiences

"I think 2005 STi while very boy racer with it's hood scoop and big wing is holding up quite well Same with Evo IX" — icecream_specialist (source)

"https://preview.redd.it/4iqe6dfxon4g1.jpeg?width=2340&format=pjpg&auto=webp&s=cd717d6e9f337592754d06915df01895a4929df0 Miss you Luna, way more than the old 2010 WRX" — KingFurykiller (source)

"Hey fellow enthusiasts, I need help deciding what wheels to get for my track focused 2006 WRX. I would like to get 17x8.5 or 17x9 with a +4x offset and use a 245/45/17 semi slick tire, any suggestions?" — Snowz8881 (source)

Real Repair Costs

"I have a 2002 wrx (145k miles) started dripping coolant and overheating. Immediately took it to a mechanic who said it was a head gasket, and told me it would be $7,000 for a replacement." — Professional_Food_61 (source)

"Immediately took it to a mechanic who said it was a head gasket, and told me it would be $7,000 for a replacement. This didn’t include sending it to a machine shop for resurfacing." — Professional_Food_61 (source)

"I like the current VB gen, but I watched prices balloon over the last few years and dealers weren't really budging over the summer. I ended up buying a new 2025 GR Corolla instead for close to $4,000 below MSRP." — DammitMike (source)

FAQ

Q: How long does it take to fix a clicking spoiler? A: For a DIYer with the right tools, the actual repair takes about 30-45 minutes. Most of the time is spent carefully removing and replacing interior trim panels. A professional shop should be able to complete it within one billed hour.

Q: Can I drive with a clicking spoiler? A: Yes, you can drive the vehicle. The noise is primarily an annoyance and indicates a loose component. However, driving for an extended period with it loose can enlarge the mounting holes, lead to water leaks into the trunk, or, in a very rare case, potentially lead to the spoiler becoming detached at high speed. It's best to address it promptly.

Q: Is this a common issue on the 2010 WRX? A: While not a universal defect, it is a very common wear-and-tear issue reported in owner communities. The combination of standard spoilers, a vibrant aftermarket parts culture, and the vehicle's age means many have been removed and reinstalled or have simply endured over a decade of vibration. As an owner mused about design, "I think 2005 STi while very boy racer with it's hood scoop and big wing is holding up quite well," which speaks to the lasting but sometimes noisy nature of these iconic features (source).

Q: DIY vs mechanic - what's recommended? A: This is a highly recommended DIY job. It requires no mechanical expertise, just basic hand tools and careful attention. The cost savings are significant, and it's a satisfying repair. If you are uncomfortable removing interior trim, a local shop or dealership can handle it quickly.

Q: Could it be something else, like suspension? A: While suspension components (like sway bar end links or strut mounts) are common sources of knocking, the key differentiator is location. A spoiler knock is heard from the rear upper section of the car and is highly influenced by wind. A suspension knock is heard from the wheel wells and is triggered by bumps and road imperfections. Always perform the "push test" on the spoiler first.

Q: What if I tighten it and the noise comes back? A: If the noise returns, it likely means the threadlocker was not used, the torque specification was too low, or the mounting holes have become damaged and no longer allow the bolts to clamp securely. The next step is to remove the spoiler completely, inspect the mounting holes on the body and spoiler for elongation, and install larger washers or seek professional body repair advice.