BMW bulletin B320725
What it saysRattling/knocking noise from the front axle at low speeds of less than 15 mph. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Jun 11, 2025, received Jun 17, 2025, about the suspension. It names 1 model year (2025). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationRattling/knocking noise from the front axle at low speeds of less than 15 mph. The noises are induced by driving over rough road surface or by brake operation. The noises occur during straight ahead driving or cornering.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B320725 | Service bulletin | Jun 11, 2025 | 11019562 | PDF, 181 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 63 complaints with NHTSA since 2015.
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the suspension
Source: same model, same component group5 other manufacturer communications filed against the BMW X5 under the same component group (suspension), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B310326 | Service bulletin | Feb 23, 2026 | Various external influences can cause premature aging of the tension strut hydro-mount elastomer; which can lead to cracks in the material… |
| B310122 | Service bulletin | Jan 3, 2026 | During inspection and/or diagnosis there is noticeable dirt/grease buildup on the axles near the inner and/or outer CV boots. |
| B064625 | Other | Sep 5, 2025 | Control Arm Return |
| 0037360200 | Service campaign | Jun 12, 2025 | The air line on the air suspension supply system may not be properly installed. In the event of a fault, residual pressure is maintained in… |
| 0061140900 | Service campaign | Apr 18, 2025 | Due to unfavorable tolerances, the Power Control Unit (PCU) may switch off under heavy loads and nolonger charge the Lithium-Ion (Li-Ion) Au… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for BMW, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is BMW B320725 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the B320725 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every BMW warranty extension on file lists the ones BMW has filed.
Which vehicles does B320725 cover?
The manufacturer filed it against 1 model year: 2025 BMW X5. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.