BMW bulletin B310126
BMW filed this with NHTSA as a service bulletin dated Feb 4, 2026, received Feb 23, 2026, about the suspension. It names 7 model years (2023–2024). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhen driving over an uneven road surface, a “thumping� noise can be heard from the front axle. Seeattached video V 31 01 26. Under certain weather conditions, a “groaning� noise may be heard during steering movements
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| B310126 | Service bulletin | Feb 4, 2026 | 11028921 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it 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.
Common questions
Source: NHTSA, 49 CFR 579.5Is BMW B310126 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 B310126 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.
Which vehicles does B310126 cover?
The manufacturer filed it against 7 model years: 2024 BMW 4 Series, 2024 BMW X1, 2024 BMW X2, 2024 BMW X3, 2024 BMW X4, 2023 BMW Z4 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.