2021 BMW 330i Front Axle Noise Service Action
BMW has issued a SERVICE ACTION to address acoustic abnormalities in the front axle of certain 2021 BMW 330i, M340i, Z4, and 330e vehicles. This issue stems from incorrectly pressed-in rubber or hydraulic mounts in the wishbone or tension strut, requiring replacement.
S'applique également à
- BMW 330e
- 2021
- BMW M340i
- 2021
- BMW Z4
- 2021
BMW has identified a manufacturing issue leading to a SERVICE ACTION concerning certain 2021 BMW vehicles, including the 330i. This action, documented under NHTSA ID 10181218, addresses acoustic abnormalities originating from the front axle. Owners of affected vehicles experiencing a BMW 330i front axle noise should be aware of this important service campaign.
Symptoms
Owners of affected 2021 BMW 330i, M340i, Z4, and 330e models may notice "acoustic abnormalities in the front axle." These noises typically manifest as unusual sounds coming from the front suspension area during vehicle operation.
Diagnosis and Trigger Conditions
The root cause of the BMW 330i front axle noise has been traced to a process fault at a supplier. This fault resulted in the rubber mounts within the wishbone, or the hydraulic mounts within the tension strut, being "incorrectly pressed-in." This improper installation leads to the audible issues in the front axle.
Repair Procedure Summary
To resolve the "acoustic abnormalities in the front axle," the SERVICE ACTION requires technicians to "REPLACE THE WISHBONE OR TENSION STRUT" in the affected vehicles. This procedure ensures that the new components have correctly installed mounts, eliminating the source of the noise. The specific component (wishbone or tension strut) to be replaced will depend on the vehicle's configuration and the exact location of the incorrectly pressed-in mount.
Owner Action
If you own a 2021 BMW 330i, M340i, Z4, or 330e and are experiencing any unusual noises from the front axle, it is recommended to contact your authorized BMW dealership. They can determine if your vehicle is covered by this SERVICE ACTION and arrange for the necessary inspection and repair. This repair should be performed free of charge under the terms of the service action.
Source: NHTSA Manufacturer Communication 10181218
Frequently Asked Questions
- What is the specific issue causing front axle noise in 2021 BMW vehicles?
- The issue is caused by a manufacturing defect where the rubber mounts in the wishbone or hydraulic mounts in the tension strut are "incorrectly pressed-in," leading to "acoustic abnormalities in the front axle."
- Which BMW models are affected by this front axle noise service action?
- This service action primarily affects 2021 BMW 330i, M340i, Z4, and 330e models.
- What is the repair for the incorrectly pressed-in mounts?
- The repair involves a SERVICE ACTION to "REPLACE THE WISHBONE OR TENSION STRUT" in the affected vehicles to correct the improperly installed mounts.
What BMW 330i owners report
Counted from the records in our database across 16 model years.
- 818
- Owner complaints
- 39
- Recalls
- 863
- Service bulletins
- 30
- Crashes reported
- 38
- Fires reported
- 36
- Injuries reported
The 2021 model year
29 complaints, the 10th most of 16 model years on file. Owners reported 1 crash, 3 fires and 1 injury for this year, which also has 7 recalls on file.
Suspension, the system this article covers, accounts for 13 of 818 complaints (2%), including 2 for 2021.
Complaints by model year
| 2001 | 116 | |
|---|---|---|
| 2002 | 45 | |
| 2003 | 77 | |
| 2004 | 113 | |
| 2006 | 219 | |
| 2017 | 42 | |
| 2018 | 32 | |
| 2019 | 41 | |
| 2020 | 53 | |
| 2021 | 29 |
Most-reported systems
- Air Bags — 246
- Exterior Lighting — 153
- Electrical System — 132
- Engine — 89
- Power Train — 44
Latest recalls for the 2021 model year
- 26V056000 — Electrical System (Jan 2026)
- 25V636000 — Electrical System (Sep 2025) — Park outside
- 23V584000 — Electrical System (Aug 2023)
Recent owner reports about suspension
I bought my car in 2023 with 12,000 miles. I currently have 43,000 on it. I don’t drive it hard and have always had the maintenance done. I had my rear brakes replaced today at BMW and I was told my engine mounts have failed and need to be fixed asap.
Read owner complaints →The front axle support and the right front control arm bearing bracket may be separating, which is causing my vehicle to continually fall out of alignment.
Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.
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