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2019 Subaru Crosstrek Humming Noise from Rear Wheel

By ClearTheCode · Published 2026-05-31 · ~7 min read

Experiencing a 2019 Subaru Crosstrek humming noise from the rear wheel? Learn common causes, how to diagnose, and repair options to restore quiet driving.

At a glance

Difficulty
6/10 — Moderate
Est. repair cost
$100 – $900 (parts + typical shop labor)
OEM tooling
Standard OBD-II scanner and hand tools
Common symptoms
  • Grinding or growling noise: As the bearing deteriorates further
  • the humming can evolve into a more distinct grinding or
  • Loose or wobbly wheel: In severe cases
  • you might notice excessive play when trying to wiggle the affected wheel by hand
  • Vibration: A subtle to noticeable vibration can be felt through the steering wheel
  • floor

Is your 2019 Subaru Crosstrek developing an annoying humming noise from the rear wheel that gets louder as you accelerate? This distinct sound, often described as a growl or drone, is a common indicator of a failing rear wheel bearing. Ignoring this symptom can lead to safety issues and more costly repairs down the road, so understanding the problem and addressing it promptly is crucial for your Crosstrek's longevity and your peace of mind.

What drivers notice on this 2019 Subaru Crosstrek

Drivers of the 2019 Subaru Crosstrek often first notice a persistent, low-frequency humming or droning noise emanating from the rear of the vehicle. This sound typically:

  • Increases in volume with vehicle speed.
  • May change pitch or intensity when turning, especially when cornering at higher speeds (e.g., a right turn might put more load on the left rear wheel bearing, making the noise more prominent if that bearing is failing).
  • Can sometimes be accompanied by a subtle vibration felt through the floorboard or steering wheel.
  • Is often mistaken for tire noise initially, but persists even after tire rotation or replacement.
  • May become more pronounced during cold weather or after driving for extended periods.

At a glance: difficulty, repair cost, and diagnostic workflow

  • Difficulty Rating: 6/10 — Moderate
  • Common Symptoms: Grinding or growling noise: As the bearing deteriorates further, the humming can evolve into a more distinct grinding or; Loose or wobbly wheel: In severe cases, you might notice excessive play when trying to wiggle the affected wheel by hand; Vibration: A subtle to noticeable vibration can be felt through the steering wheel, floor, or seat, especially at certai; ABS or traction control light: While less common for a simple bearing hum, extreme bearing failure can sometimes disrupt
  • Estimated Repair Cost: $100–$900 (parts + typical shop labor)
  • OEM Tooling Required: Standard OBD-II scanner and hand tools

Diagnostic workflow:

  1. Confirm the symptom on your vehicle.
  2. Scan for stored or pending codes with an OBD-II tool.
  3. Inspect the most common causes in this guide (visual checks first).
  4. Run verification tests before replacing parts.
  5. Repair, clear codes, and verify on a test drive.

Symptoms and warning signs

Beyond the primary humming noise, a failing rear wheel bearing on your 2019 Subaru Crosstrek can manifest with several other indicators:

  • Grinding or growling noise: As the bearing deteriorates further, the humming can evolve into a more distinct grinding or growling sound, indicating metal-on-metal contact within the bearing assembly.
  • Loose or wobbly wheel: In severe cases, you might notice excessive play when trying to wiggle the affected wheel by hand, indicating significant bearing wear.
  • Vibration: A subtle to noticeable vibration can be felt through the steering wheel, floor, or seat, especially at certain speeds.
  • ABS or traction control light: While less common for a simple bearing hum, extreme bearing failure can sometimes disrupt the ABS wheel speed sensor, triggering related warning lights on your dashboard.
  • Uneven tire wear: Though not a direct symptom, a severely compromised bearing can sometimes lead to uneven wear patterns on the affected tire due to improper alignment or wheel wobble.

How to verify and confirm the issue

Confirming a failing rear wheel bearing on your 2019 Subaru Crosstrek involves a combination of sensory checks and physical inspections:

  • Road Test: Drive the vehicle on a quiet road. Listen carefully for the humming noise. Try weaving gently from side to side at speed; if the noise changes (gets louder or quieter) when loading or unloading a specific side of the vehicle, it strongly points to a wheel bearing on that side. For example, a left turn puts more load on the right-side bearings.
  • Lift and Inspect: Safely lift the rear of your Crosstrek using a jack and jack stands. With the wheel off the ground, grasp the wheel at the 12 and 6 o'clock positions, then at 3 and 9 o'clock. Try to wiggle the wheel. Any noticeable play or clunking indicates a worn bearing or suspension component. Repeat for the other rear wheel for comparison.
  • Spin the Wheel by Hand: With the vehicle lifted and the transmission in neutral, spin the suspect wheel by hand. Listen closely for any grinding, rumbling, or rough sounds coming from the hub area. A healthy bearing should spin smoothly and quietly.
  • Visual Inspection: While the wheel is off, visually inspect the area around the hub for any signs of grease leakage (which could indicate a seal failure) or damage. Check the condition of the tires as well, as sometimes tire cupping or uneven wear can mimic bearing noise.
  • Stethoscope Test: For a more precise diagnosis, use an automotive stethoscope (or a long screwdriver held to your ear) to listen to the hub area while the wheel is spinning (carefully, with the vehicle securely on stands). A bad bearing will transmit a distinct grinding or rumbling sound through the stethoscope.

Common causes (most likely first)

Failing wheel bearings in a 2019 Subaru Crosstrek are typically due to one or more of these factors:

  • Normal wear and tear: Bearings are wear items. Over time and miles, the internal components (rollers, races, grease) simply degrade and fail. This is the most common cause.
  • Impact damage: Hitting potholes, curbs, or other road debris can put immense stress on the wheel bearings, causing premature failure.
  • Corrosion and water intrusion: Exposure to water, road salt, and contaminants can wash away bearing grease and lead to rust, accelerating wear. This is particularly relevant in harsh climates.
  • Manufacturing defects: While less common for a 2019 model, a bearing could have a defect from the factory that leads to early failure.
  • Improper installation (previous repair): If the wheel bearing was previously replaced, improper installation (e.g., overtightening, not using proper tools) can significantly shorten its lifespan.

Step-by-step diagnosis and fixes

Diagnosing and replacing a rear wheel bearing on your 2019 Subaru Crosstrek can be a DIY project, but it requires patience and the right tools. Always prioritize safety.

  1. Confirm the Diagnosis: Perform the road test and physical wheel play checks as described in the

This guide is not a substitute for OEM service procedures; use a qualified technician for safety-critical repairs.

Frequently asked questions

How urgent is this problem?

If symptoms are worsening or safety systems are affected, diagnose soon; minor issues can often wait for a scheduled service visit.

Can I drive with this issue?

Short trips may be acceptable for some faults, but stop driving if you notice overheating, loss of braking, steering problems, or strong fuel smells.

Do I need a dealer scan tool?

A basic OBD-II scanner helps confirm codes; some steps still need visual checks and meter tests described above.

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