2021 Mazda CX-9 Problems, Complaints & Recalls
- Compared with other CX-9 years
- Fewer complaints than other years 13th of 17 for complaints
- Safety recalls
- 1 recall: check your VIN
- NHTSA crash rating
- 5 out of 5 stars
Owners have filed 40 complaints with NHTSA about the 2021 Mazda CX-9. That ranks 13th out of 17 CX-9 model years for complaints. The most reported problem area is engine (21 complaints, 53%), typically at around 51,093 miles. Complaints mention 7 crashes, 1 injury. There is 1 safety recall covering this model year.
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- 40owner complaints
- 1safety recalls
- 0NHTSA investigations
- 7complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2021 Mazda CX-9 problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Engine | 21 | 53% | 51,093 | — | — |
| Unknown or Other | 6 | 15% | — | — | — |
| Power Train | 5 | 13% | — | — | — |
| Forward Collision Avoidance | 4 | 10% | — | — | — |
| Service Brakes | 4 | 10% | 4,000 | — | — |
| Vehicle Speed Control | 3 | 8% | 53,186 | — | — |
| Air Bags | 2 | 5% | — | — | — |
| Back Over Prevention | 2 | 5% | — | — | — |
| Electrical System | 2 | 5% | — | — | — |
| Steering | 1 | 3% | 4,000 | — | — |
| Suspension | 1 | 3% | 68,811 | — | — |
| Tires | 1 | 3% | — | — | — |
| Visibility/wiper | 1 | 3% | — | — | — |
| Wheels | 1 | 3% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2021 Mazda CX-9 recalls (1)
Tap a recall to see the problem, the risk and the fix.
Seats:mid/rear assembly; seat belts:rear/other
Problem: 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.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
2021 Mazda CX-9 (VIN: [redacted] / 72,400 mi) Vehicle has suffered complete, sudden loss of motive power at high freeway speeds on four separate occasions. Without warning, the engine loses all propulsion, essentially stalling mid-traffic and forcing me to dangerously coast across active freeway…
I entered the interstate normally, with no issues accelerating or merging. While driving at approximately 70 mph, in traffic, all three warning messages appeared on the instrument cluster at the same time: âSmart Brake System Malfunction,â âDriver Attention Alert System Malfunction,â and…
On a high-speed highway (Route 14), the vehicle suffered a sudden flat tire/air loss event, forcing an emergency pull-off onto a narrow shoulder with 65 mph traffic. Subsequent inspection revealed the failed tire and the rest of the set were manufactured in late 2007 (DOT code 4907). These…
The vehicle was parked stationary in the driveway with the engine running for 3-5 minutes with the A/C on. The vehicle then accelerated forward into my garage causing damage. Once I entered the vehicle, both the dash and shifter displayed park. Current TCU system internal failures have been…
1) What component or system failed or malfunctioned: On 6/12/2026 While drive on the highway with our daughter in the car and we experienced a high speed stall. The engine failed and we lost power. We barely got the car of the highway and coasted into a parking lot. 2) Life threating for Father…
Other Mazda CX-9 years
| Year | Complaints | Recalls |
|---|---|---|
| 2023 CX-9 | 13 | 0 |
| 2022 CX-9 | 11 | 0 |
| 2021 | 40 | 1 |
| 2020 CX-9 | 19 | 1 |
| 2019 CX-9 | 53 | 2 |
| 2018 CX-9 | 128 | 2 |
| 2017 CX-9 | 61 | 0 |
| 2016 CX-9 | 107 | 0 |
| 2015 CX-9 | 35 | 2 |
| 2014 CX-9 | 54 | 3 |
| 2013 CX-9 | 68 | 4 |
| 2012 CX-9 | 221 | 4 |
| 2011 CX-9 | 170 | 4 |
| 2010 CX-9 | 195 | 6 |
| 2009 CX-9 | 59 | 6 |
| 2008 CX-9 | 172 | 5 |
| 2007 CX-9 | 86 | 5 |
See all Mazda CX-9 problems by year, every Mazda model, or the Mazda VIN decoder.
Similar Mazda models
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Frequently asked questions
What are the most common problems with the 2021 Mazda CX-9?
Owners most often report engine, unknown or other, power train problems. The top one, engine, accounts for 21 complaints.
Was there a recall on the 2021 Mazda CX-9?
Yes, 1 safety recall. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2021 Mazda CX-9 a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other CX-9 model years, the 2021 has fewer complaints than most years, and NHTSA rates it 5 out of 5 stars overall in crash tests. Always get a pre-purchase inspection and check the VIN for open recalls.