The 2021 Mazda Cx-9 has 1 NHTSA recall campaign affecting an estimated 8,648 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 42 complaints with NHTSA, most often about the engine. Last updated July 5, 2026.
Recall campaigns
SEATS21V7500002021-09-278,648 affected
Defect
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…
Consequence
A seat that slides forward during a crash can transfer excessive force onto a belted occupant, increasing their risk of injury.
Remedy
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.
Complaints by component
ENGINE
17
UNKNOWN OR OTHER
6
2crashes1injuries
SERVICE BRAKES
4
2crashes
FORWARD COLLISION AVOIDANCE: WARNINGS
3
1crashes1injuries
AIR BAGS
2
2crashes
POWER TRAIN
2
1crashes1injuries
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
1
1crashes
BACK OVER PREVENTION: WARNINGS
1
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
1
STEERING
1
1crashes
Total complaints42
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“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 coils from 2 to 3 2. Swap spark plugs from 2 to 3 3. Swapped injectors 4. Compression test 5. Leak down test 6. Changed the spark…”
“Backup camera shows three to four feet before red collision line is not accurate causing severe damage to my garage door.”
“My vehicle is part of mazda's 2021-2022 mazda valve stem seal settlement. The dealership had yet to call me in for the repair of said valve seal repair as I was on a list. The settlement is suppose to extend out the powertrain warranty on the vehicle 2 years/24,000 to 7 years/84,000. My vehicle…”
“My mazdacx9 engine consumes (burns) an excessive amount of oil, necessitating frequent top-offs between oil changes.this issue started after the first oil change and continued since then.”
“On [xxx], [xxx], [xxx] I was driving on an interstate highway with a 65 mph speed limit with no warning and received the following codes which slowed the vehicle to the limp mode. 1) smart brake support and forward obstruction warning 2) activsense system malfunction 3) front radar sensor…”
“Hello, I have been to a mazda dealer complaining of clicking and squeaky brakes for 2 years now. Dealer replaced both front and back breaks and rotors around 22k year ago and to my surprise the issues persist, currently vehicle is at 49k. There is a tsb( 04-001/22) out for my vin and year, so they…”
“The contact owns a 2021 mazda cx-9. The contact stated while driving at various speeds and turning, there was a popping sound coming from the front end of the vehicle. The front-end popping sound also occurred while driving over bumps in the roadway. The vehicle was taken to an independent…”
“I just purchased this vehicle 2 months ago. Yesterday my oil light came on, I pulled over and checked the oil it was completely low. I had to put a quart of oil in it. After that I did some research and learned this seems to be an issue with some 2021 models the cx9 included. There needs to be a…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2021 Mazda Cx-9 as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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