MINI Cooper 2017–2021 — technical service bulletin
Bulletin M110420 · NHTSA communication 10182925 · issued Oct 1, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2021
model years
12
vehicle entries
Official summary
SERVICE ACTION - MOUNTING THE OIL FILLER CAP CORRECTLY: The oil filler cap may not be mounted correctly. The cap was not installed correctly during assembly.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.