Mazda Miata NC (2006-2015 US model years): Reliability mods
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What are the best reliability mods for the Mazda Miata NC (2006-2015 US model years)?
It depends on the car’s condition and how you use it. These are the 1 reliability build entry we have sourced for this car: Keep NC soft-top and PRHT drains clear (Reported). Each lists caveats, related problems and sources so you can match it to your goal.
Keep NC soft-top and PRHT drains clear Reported
Pour water into each drain a few times a year and clear blockages with compressed air; on early soft tops check whether the drain TSB parts were fitted.
Caveats: PRHT drain advice comes from a single club source.
Related issues: Plugged soft-top drains put water in the footwells (2006-2009 TSB), PRHT drains clog too, Water leak at the front of the soft top (early 2006, TSB 09-013/06)
Sources (3)
- Mazda TSB 09-046/10: 2006-2009 MX-5 soft top, water in footwell from plugged drains (10/15/2010) — Mazda North American Operations (service bulletin) (mfr spec; read 2026-10-26; full page read)
- NC PRHT water drains: how to check and clean them — MX-5 Club of Victoria (club tech article) (editorial; read 2026-10-26; full page read)
- 2006 Mazda MX-5 Owner's Manual (Form 8U35-EA-05F, Edition 4 / Print 4, Nov. 2005) — Mazda Motor Corporation (owner's manual) via mazdausa.com (mfr spec; read 2026-10-26; full page read)
More for this car
- All Mazda Miata NC (2006-2015 US model years) fitment answers · NC common problems
- Newsletter archive: past issues with every new and corrected entry
Report a correction — spotted an error or have a better source? Email hello@chassisdex.com.