2021 BMW 3 Series / Z4 Front Axle Noise TSB
BMW has issued a Service Action (NHTSA ID 10182906) for certain 2021 3 Series and Z4 models regarding acoustic abnormalities from the front axle. This issue is linked to incorrectly pressed-in rubber or hydraulic mounts in the wishbone or tension strut, requiring replacement.
Também se aplica a
- BMW 330e
- 2021
- BMW M340i
- 2021
- BMW Z4
- 2021
Symptoms of Front Axle Noise
Owners of certain 2021 BMW 3 Series and Z4 models may experience "acoustic abnormalities" originating from the front axle. This can manifest as unusual noises or sounds during vehicle operation, indicating a potential issue with the front suspension components.
The Cause: Suspension Mount Issues
According to BMW's Service Action, the root cause of the 2021 BMW 330i front axle noise is an incorrectly pressed-in rubber mount within the wishbone or a hydraulic mount in the tension strut. This manufacturing defect stems from a process fault at the supplier, leading to improper installation of these critical suspension components.
Repair Procedure Summary
To address the acoustic abnormalities in the front axle, the recommended repair involves replacing the affected wishbone or tension strut. This Service Action, identified as NHTSA Manufacturer Communication 10182906, ensures that the correctly manufactured and installed components are used to resolve the noise issue and restore proper suspension function.
What Owners Should Do
If you own a 2021 BMW 330i, 330e, M340i, or Z4 and notice any unusual noises from the front axle, it is advisable to contact your authorized BMW dealership. They can inspect your vehicle and perform the necessary replacement of the wishbone or tension strut under this Service Action.
Source: NHTSA Manufacturer Communication 10182906.
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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