Service bulletins for the 2020 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.
251 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Axle are shown. Show all
| B310719 | 2020-02-18. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. SERVICE ACTION: APPLY CAVITY WAX PROTECTION INSIDE THE FRONT AXLE SUPPORT: The corrosion protection applied to the inside of the front axle support during the manufacturing process may have minor coating defects. In individual cases this can lead to localized rust damage on the front axle support over the service life of the vehicle. Manufacturing process error. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.