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2021 Mazda Cx-90 Mhev
Solid pick. The public record on this car is clean for its age. Inspect it, then negotiate with confidence.
35 owner complaints · 1 recalls · data verified July 19, 2026 · source: NHTSA
Why buy?
Engine problems dominate (51% of complaints, typically reported near 4k miles).
Very few owner complaints for its age and sales volume.
Score breakdown, by factor
Full methodology →#50 of 408Among the 2021 models with a matured record, the 2021 Mazda Cx-90 Mhev ranks #50, scoring higher than 86% of them. See the 2021 ranking →
Complaints filed per year
Fading = early teething worked out. Climbing = problems aging in.
How it crashes
NHTSA’s own crash tests, separate from the reliability score above.
5/5 overall
NHTSA 5-Star Safety Rating · 2021 Mazda CX-9 SUV AWD
Rollover risk in a single-vehicle crash: 16%
No open NHTSA defect investigations on file.
Source: nhtsa.gov/ratings. Star ratings compare vehicles within the same class and size, not across every car on the road.
The road ahead
What breaks on a 2021 Mazda Cx-90 Mhev, plotted where owners report it happening.
Mileage medians come from owners who mentioned an odometer reading in their NHTSA complaint, a rough guide, not a schedule.
Engine
51%18 complaints · typically near 4k mi · 4 in the last 2 years
“Check engine light comes on and error P0303 comes on. Had an independent mechanic do the following and after each one, error P0303 still came on 1. Swap the ignition c…”
Brakes
11%4 complaints · 1 in the last 2 years
“The driver side airbag did not deploy in a front end collision on the drivers side. When approaching a vehicle that had come to a sudden and complete stop, the brakes …”
Driver assistance
9%3 complaints · 1 in the last 2 years
“6/29/2023--Vehicle stopped suddenly with i-ACTIVESENSE system malfunction, Dynamic Stability Control malfunction, Engine malfunction, engine output reduced, Front rada…”
Backup camera & sensors
6%2 complaints · 1 in the last 2 years
“Backup camera shows three to four feet before red collision line is not accurate causing severe damage to my garage door.”
Check it against this car’s mileage
Type the odometer reading on the actual car you’re looking at to see which of these problem areas owners tend to report before it, around it, or after it.
We can place 1 of this model's commonly reported problem areas against a mileage. Nothing is stored.
Read all 35 owner complaints in their own words → · just the 6 crash/fire/injury reports →
Recalls (1)
Safety recall repairs are free at the brand’s franchised dealers. Before buying, run the VIN at nhtsa.gov/recalls and make the seller show the work was done.
Seats · 21V750000
Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-9 vehicles equipped with 60/40 split bench second-row seats. The left-side second-row seat may unexpectedly slide forward during a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 210, "Seat Belt Assembly Anchorages."
Risk: A seat that slides forward during a crash can transfer excessive force onto a belted occupant, increasing their risk of injury.
Fix: Dealers will replace the internal parts of the affected second-row seats, free of charge. Owner notification letters were mailed November 4, 2021. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 5221I.
Questions to ask the seller
Questions worth asking the seller of this Mazda before you buy, drawn from its public record:
- NHTSA lists 1 recall campaign for the 2021 Mazda Cx-90 Mhev. Can you run this car's VIN at nhtsa.gov/recalls and confirm each one shows "Remedy Completed"?
- Owners of this model report engine problems more than anything else (owners tend to report it near 4k miles). Has this car shown any engine symptoms, and are there repair records for it?
- Has this car been in any accident or had any structural, airbag, or flood-related repair? Do you have a clean title and a recent history report (Carfax / AutoCheck)?
- How many owners has it had, do you have the maintenance records, and why are you selling it?
- Are you open to me having an independent mechanic inspect it before we settle on a price?
Before you hand over money
Check the VIN for open recalls
NHTSA’s free lookup shows whether this exact car had its recall remedies completed.
Free NHTSA VIN check ↗Get a pre-purchase inspection
A $150 to $250 independent inspection of this exact 2021 Mazda CX-90 MHEV beats every score on the internet, including ours.
What to ask forNot set on the 2021? See how every Cx-90 Mhev model year scores →
Cross-shopping? Compare the 2021 Mazda Cx-90 Mhev against another car →
What owners say
Real owners of this exact model-year, shown separately from the NHTSA score. If they disagree, that’s worth knowing.