Service bulletins for the 2018 Audi A6
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.
700 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Fuel tank are shown. Show all
| A1921222046712_3 | 2021-08-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap. |
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| A2020252050276_5 | 2020-03-05. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for when the customer has problems filling the fuel tank and DTC P045100, P044100, P202500, and/or P045300 is present. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.