BMW bulletin B180125
What it saysDiscolorization of exhaust system rear silencer NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated May 11, 2026, received Feb 24, 2025, about the structure — 2 documents under this number. It names 5 model years (2024–2025). 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 communicationDISCOLORIZATION OF EXHAUST SYSTEM REAR SILENCER
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B180125 | Service bulletin | May 11, 2026 | 11033031 | PDF, 2,805 KB |
| B180125 | Service bulletin | Feb 21, 2025 | 11014423 | PDF, 2,791 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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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 5 model years this bulletin names have filed 55 complaints with NHTSA since 2015. 8 of them name Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Our X1 has a lot of "slip" in the transmission. It's most apparent when you back up and then switch to drive. In our X1, the car keeps rolling backward like it's in neutral. Drive doesn't engage until after a long delay
2024 BMW X1 · Power Train · filed with NHTSA Jan 8, 2026 · ODI 11709771
As with other complaints, the dual clutch transmission/powertrain is faulty. The BMW dealership and BMW North America are unwilling to acknowledge the safety issue, issue a recall, or buy back.
2025 BMW X1 · Power Train · filed with NHTSA Sep 29, 2026 · ODI 11767732
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 structure
Source: same model, same component group29 other manufacturer communications filed against these BMW models under the same component group (structure), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B511126 | Service bulletin | Oct 24, 2026 | Various noises can be heard between 50and 75 mph, such as whistling, or a heavyairflow coming from front bumper area. |
| B640826 | Service bulletin | Aug 28, 2026 | Customers may hear a noise from underneath the vehicle, or feel something rubbing being transmitted intothe body of the vehicle while drivin… |
| B630426 | Service bulletin | Jul 1, 2026 | The front interior reading light(s) (arrows) willrandomly turn ON and OFF while driving. The reading lights are normally activated bytouchin… |
| B512022 | Service bulletin | Jun 30, 2026 | While driving on rough roads, a cracking sound is heard coming from the headliner area. |
| B511225 | Service bulletin | Jun 12, 2026 | A “groaning” noise is heard from the tailgate when driving on rough roads. |
| B641224 | Service bulletin | May 4, 2026 | 1. Use of aftermarket accessory hang-on cellular phone holders and/or air fresheners can break the instrument panel air vent slats. Damage a… |
| B512224 | Service bulletin | Mar 18, 2026 | On the main door seal, detachment behaviorcan be detected at the sealing joint . Over time, the seal gradually and increasinglydetaches whic… |
| B540325 | Service bulletin | Nov 20, 2025 | Contamination on the outer track(s) of thes unroof cassette. This can occur on either one or both side of the sunroof cassette. |
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 B180125 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 B180125 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 B180125 cover?
The manufacturer filed it against 5 model years: 2024 BMW 2 Series, 2025 BMW X1, 2024 BMW X1, 2025 BMW X2, 2024 BMW X2. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.