Service bulletins for the 2018 BMW 340i
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.
80 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Exhaust and emissions are shown. Show all
| B121318 | 2020-04-20. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. DME FC 21A02D - COMBUSTION CONTROL: VALVE LIFT AT IDLE This Service Information Bulletin (Revision 3) replaces SI B12 13 18 dated September 2019. The vehicle will run rough or hesitate when accelerating from a stationary position. |
|---|---|
| B710218 | 2018-08-06. Service bulletin. EQUIPMENT:OTHER:LABELS; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. VOLUNTARY EMISSIONS RECALL CAMPAIGN 18E-A02: REPLACE UNDER HOOD EMISSIONS LABEL |
| B120318 | 2018-07-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. NO AUDIBLE DIFFERENCE IN EXHAUST WITH "M PERFORMANCE POWER AND SOUND KIT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.