Service bulletins for the 2021 BMW M340i
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
183 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Automatic transmission are shown. Show all
| B340122 | 2022-06-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. When driving off from a standstill, a delayed or sluggish throttle response may be noticed sporadically. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.