1990 Mazda MX-5 Miata (NA) — Should You Buy One?
Typical asking price: $6,000–$18,000. There is 1 high-severity known issue you need to know before handing over a check.
Kestrel Take
The best-handling cheap classic in the world and the friendliest first collector car anyone can buy. Cheap, reliable, endlessly supported, and genuinely fun. The only real enemies are rust in the rockers and the timing belt on a motor that will otherwise run forever.
What we checked
Checked against public records, 2026-09-25
Federal complaint records thin out badly before about 2000, so there is little here to check against. What follows is our own write-up. Treat a short list as us having less to go on, not as the vehicle having fewer faults.
Known Issues for the 1990 Mazda MX-5 Miata (NA)
Ranked by wallet impact. These are documented, recurring problems — not freak accidents. How we decide that.
NA Miatas rot at the rockers, the front frame rails, and behind the rear wheels. Rocker and rail rust is structural. A clean California car is worth a real premium over a rusty one.
Repair cost (estimate): $1,000-$5,000 — about 42% of what this car is typically worth
Source: not yet checked against public records.
The 1.8L is an interference engine — a snapped belt bends valves. The 60,000-mile timing belt is essential. Many neglect it.
Repair cost (estimate): $500-$900 on schedule
Source: not yet checked against public records.
The convertible top, bushings, and clutch wear with age. All cheap and easy on this car.
Repair cost (estimate): $300-$1,500
Source: not yet checked against public records.
The crank angle sensor and radiator fail with age, causing stalling and overheating.
Repair cost (estimate): $200-$700
Source: not yet checked against public records.
Walk-Away Red Flags
- ✗Rocker and frame rail rust — the structural killer
- ✗No timing belt service record
- ✗A soggy, mildewed top and interior
- ✗Track abuse with no maintenance history
Good Signs
- ✓A documented timing belt service
- ✓Fresh bushings, top, and clutch
- ✓An honest, well-maintained original
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