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2021 Mazda CX-9 recalls and problems

The 2021 Mazda CX-9 has 1 safety recall and 41 owner complaints filed with NHTSA. Recall repairs are free at any Mazda dealer.

Recalls
1
Complaints
41
Crashes / fires
7 / 0
Injuries / deaths
1 / 0

Recalls may cover only some 2021 Mazda CX-9 vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.

2021 Mazda CX-9 recalls

Recall 21V-750: Seats, Seat Belts

Reported Sep 27, 2021 · 8,648 vehicles affected · Mazda North American Operations

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.

2021 Mazda CX-9 problems reported by owners

Problem areaReports
Engine21
Unknown or Other6
Power Train5
Service Brakes4
Forward Collision Avoidance4
Vehicle Speed Control3
Back Over Prevention2
Air Bags2
Electrical System2
Steering1
Visibility/Wiper1
Wheels1

Most reported parts

  • Forward Collision Avoidance › Warnings — 3
  • Back Over Prevention › Warnings — 1
  • Electrical System › Instrument Cluster/Panel — 1
  • Vehicle Speed Control › Accelerator Pedal — 1
  • Back Over Prevention › Sensing System › Camera — 1
  • Forward Collision Avoidance › Automatic Emergency Braking — 1

Typical mileage at the time of the problem: 53,186 miles (median of owner reports).

Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.

Recent 2021 Mazda CX-9 complaints

Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.

Engine and Engine Cooling · at 86,000 miles · reported Nov 4, 2026
The contact owns a 2021 Mazda CX-9. The contact stated that while driving approximately 20 - 25 MPH, the check engine warning light illuminated. The contact used a diagnostic scanner and retrieved DTC: P0303, for a cylinder #3 misfire. The vehicle was taken to a local Mazda dealer to be diagnosed and repaired. The dealer found a coolant leak and performed a system cleaning and replaced the spark plugs and fuel injectors. However, the failure reoccurred. While the contact's wife was driving the vehicle, the check engine warning light illuminated, and the vehicle was towed to the dealer by the…
Electrical System · reported Oct 14, 2026
2021 Mazda CX-9 (VIN: [VIN] / 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 lanes to the shoulder. This creates an extreme risk of a high-speed rear-end collision. No crash or injuries have occurred yet, but the car is entirely unsafe to drive. The authorized Mazda dealership has been completely unable to diagnose or fix this intermittent failure. Due to the persistent danger, the…
Vehicle Speed Control · reported Sep 12, 2026
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: “Smart Brake System Malfunction,” “Driver Attention Alert System Malfunction,” and “Forward Smart City Brake Support Malfunction.” At the same moment, the vehicle began to lose speed. I pressed the accelerator pedal firmly. The speed continued to decrease instead of increasing. I could not accelerate at all. An exit was thankfully immediately available. I took the exit, then…
Tires · reported Aug 27, 2026
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 19-year-old tires were installed by a professional tire shop despite being far beyond their safe service life. Component/System Failed: Tires (Set of 4). Tire Size: 255/50 R20 (Vredestein Wintrac 4 Xtreme, DOT 4907). Available for inspection upon request. Safety Risk: Sudden tire failure at highway speeds…
Vehicle Speed Control · reported Aug 10, 2026
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 reported from the pulling of data from Mazda.

Other Mazda CX-9 years

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Compare all Mazda CX-9 years · All Mazda models

Frequently asked questions

Does the 2021 Mazda CX-9 have any recalls?

Yes — NHTSA lists 1 recall for the 2021 Mazda CX-9: 21V-750 (seats, seat belts). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.

What is the most common problem with the 2021 Mazda CX-9?

Owners report engine problems most often (21 reports), followed by unknown or other (6). The typical mileage when problems were reported is about 53,186 miles.

Are Mazda recall repairs free?

Yes. Safety recall repairs are free at authorized Mazda dealers, whether you are the first owner or bought the car used.