Reliability & 5-year cost of ownership — 2021 Mazda CX-9
NHTSA data on file today
The 2021 Mazda CX-9 has 1 NHTSA recall campaign and 40 owner complaints on file as of . Recall data is refreshed daily from NHTSA.
NCAP overall rating: 5.0 out of 5 stars, averaged across 2 NHTSA-tested trims.
Recall campaigns on file
- NHTSA #21V750000 Seat May Slide Forward in a Crash/FMVSS 210 NHTSA notice
Most-cited components in owner complaints
- Engine 21 complaints
- Unknown or Other 6 complaints
- Power Train 5 complaints
- Forward Collision Avoidance 4 complaints
- Service Brakes 4 complaints
- Vehicle Speed Control 3 complaints
Of the 40 complaints on file, 7 report a crash; across all 40 complaints, owners report 1 injury (owner-reported, not verified by NHTSA).
Average
Estimated 5-year repair + maintenance cost: $4,000–$9,000AI estimate — not from NHTSA data
The 2021 Mazda CX-9 has an average reliability rating, with concerns primarily focused on the engine and brakes, which lead the complaint counts. Potential recall issues with seat assembly further impact its reliability.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| engine | 30,000–50,000 miles | $500–$2,500 | common |
| service brakes | 40,000–60,000 miles | $300–$1,500 | occasional |
| forward collision avoidance | 20,000–40,000 miles | $400–$1,200 | occasional |
AI estimate — not from NHTSA data: the mileage bands and repair-cost ranges above. Get a written repair quote before you budget.
Scheduled maintenance to budget
Routine items every owner should plan for.
- oil and filter changes
- brake pad replacement
- tire rotations and balancing
- coolant flush
- transmission fluid change
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- engine misfires or stalling
- reduced braking performance
- unexpected forward collision warnings
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2021 Mazda CX-9 at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.