Mazda CX9
2017–2021 only
2017–2021 Mazda CX9 models have 389 classified complaints on record for these years specifically, plus 4 recalls. The most common issue in this range is Head gasket and cylinder head, typically surfacing around 68,000 miles.
Computed directly from stored federal records for 2017–2021 model years only — not blended with the rest of this vehicle's production run. See the full Mazda CX9 report for every year combined.
Where this range fits
What breaks, and when — 2017–2021 only
Median onset: 68,000 miles.
Tends to show up later than this model's other issues. · More common in older model years. · Typical repair: $1,620–$3,010 nationally.
Which other vehicles have head gasket failures? →Median onset: 28,000 miles.
More common in newer model years.
Median onset: 28,000 miles. 6.1% of these reported an injury, a death, or a crash with fire.
More common in newer model years.
Which other vehicles have driver-assist problems? →Onset mileage not consistently reported.
More common in older model years. · Typical repair: $260–$1,910 nationally.
Onset mileage not consistently reported.
More common in older model years.
Which other vehicles have oil consumption problems? →Median onset: 40,069 miles. 5.9% of these reported an injury, a death, or a crash with fire.
More common in newer model years.
Median onset: 64,000 miles.
Tends to show up later than this model's other issues. · More common in newer model years.
Median onset: 15,816 miles.
Tends to show up earlier than this model's other issues. · Typical repair: $630–$1,700 nationally.
From owner-filed complaints to NHTSA, not independently verified. Federal mileage reporting on recent complaints is sparse — see how it works. Cost ranges are national estimates from book labor hours and parts pricing, not this vehicle's actual repair history — they don't account for your location or shop type.
Cost estimator: what will this one cost you?
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Sources: NHTSA Office of Defects Investigation — complaints and recalls, scoped to 2017–2021 model years. See the full Mazda CX9 report for every year and full specs/safety data.