← Mazda Miata NA (1990-1997) problems

Rocker and floor rust from clogged drains

Reported · Severity: Medium · Years: 1990-1997

Symptoms

Smelly or wet carpets, rusty rockers (notably ahead of the rear wheel arches), blown-out floors.

Cause

Hagerty says the body drains plug up quickly, letting water back up inside.

Fix (summary)

Clear the drains, inspect the rockers and floors, and have a body shop repair rust.

Sources

• Your handy (1990-97) Mazda Miata buyer's guide — Hagerty Media (Mar 2021) (editorial; read 2026-10-15; full page read)

Summaries are in our own words. Not repair instructions; consult the factory service manual.