Mazda MAZDA3 2019–2026 — technical service bulletin
Bulletin 09-034-25 · NHTSA communication 11022624 · issued Aug 20, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2019–2026
model years
8
vehicle entries
Official summary
Some customers may notice water in the trunk after a car wash or heavy rain. This may be caused by insufficient sealing performance of the trunk lid weatherstrip. Due to improper installation of weatherstrips, the lip of the weatherstrip may lean toward the inside of the trunk, resulting in insufficient sealing performance.
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.