Mazda Miata NC (2006-2015 US model years): First steps mods
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What are the best first steps 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 first steps build entry we have sourced for this car: NC first steps: recall, coolant tank and drains (Reported). Each lists caveats, related problems and sources so you can match it to your goal.
NC first steps: recall, coolant tank and drains Reported
Run the VIN for the 2006 airbag campaign, inspect or replace the plastic coolant expansion tank, clear the soft-top or PRHT drains, and on PRHT cars check for an aftermarket roof module.
Caveats: The tank can fail without warning on the gauge; treat it as a wear item.
Related issues: Recall 06V-103: driver airbag horn-assembly bolt (early 2006 cars), Plastic coolant expansion tank cracks and dumps coolant, Plugged soft-top drains put water in the footwells (2006-2009 TSB), PRHT slow, stuck or rattling after an aftermarket roof module, PRHT drains clog too
Parts: Moroso aluminum coolant expansion tank (NC)
Sources (5)
- NHTSA recall 06V-103: 2006 MX-5 driver airbag horn-assembly bolt (2,600 units) — NHTSA (regulatory; read 2026-10-26; full page read)
- NC tech note: coolant expansion tank failures and stuck thermostat — MX-5 Club of Victoria (club tech article) (editorial; read 2026-10-26; full page read)
- 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)
- Mazda M-Tip: 2008-2013 MX-5 power retractable hardtop slow, won't open or rattles (2012) — Mazda North American Operations (M-Tip technician tip) (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.