2020 Mazda Cx-9 problems, complaints & recalls
Most-reported problem areas: Engine (3) · Service Brakes (2) · Power Train (2)
🧭 Reliability snapshot
Compared against other Mazda Cx-9 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (1)
Seats:mid/Rear Assembly 2021-09-27 · campaign 21V750000 · 8,648 vehicles
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 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.
Service bulletins (327)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Electrical System 2026-09-11 · SA-041-26a · Service Bulletin/Repair Instructions
description if you encounter any type of electrical concern (e.g, dead battery, engine no start, dtc(s) stored...), interview the customer before proceeding with normal mgss diagnosis by asking if any aftermarket devices have been installed. aftermarket devices may be the cause of the electrical con
Engine 2026-06-19 · SA-041-26 · Service Bulletin/Repair Instructions
this sa supersedes the previously issued sa(s) listed below. the changes are noted in red. sa-061/25 12/17/25 description if you encounter any type of electrical concern (e.g, dead battery, engine no start, dtc(s) stored...), interview the customer before proceeding with normal mgss diagnosis by ask
Unknown Or Other 2026-06-18 · 09-019-26 · Service Bulletin/Repair Instructions
this bulletin supersedes the previously issued bulletin(s) listed below. the changes are noted in red. 09-012/21 12/13/21, 06/10/21 and 04/27/21 description some customers may experience all of following symptoms: the door lock/unlock operation will not work using the remote transmitter button. 1. t
Electrical System 2026-06-17 · SA-027-26a · Service Bulletin/Repair Instructions
this sa supersedes the previously issued bulletin(s) listed below. the changes are noted below in red. sa-027/26 04/16/26 description the mazda dca-8000 is required for all warranty battery testing. if the mazda dca-8000 is not used, incorrect battery testing may result in unnecessary battery replac
Power Train 2026-05-01 · 01-008-26 · Service Bulletin/Repair Instructions
this bulletin supersedes the previously issued bulletin(s) listed below. the changes are noted in red. 01-008/23 06/05/23 some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tensioner. this may be caused by insufficient sealing at the driv
Unknown Or Other 2026-04-30 · SA-031-26 · Service Bulletin/Repair Instructions
description some vehicles may require the replacement of a damaged vin plate or vehicle certification label. to obtain a replacement vin plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact dag (dealer assistance group) using vin plate request form available on
Showing the 6 most recent of 327 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-06-30 · Air Bags · 130,000 mi · 💥 crash“the contact owned a 2020 mazda cx-9. the contact stated that while driving approximately 60 mph, a second vehicle crashed head-on into the front of the vehicle. during the head-on crash, no air bags inside the vehicle deployed. the contact sustained a concussion and right eye injury and later received medical attention. a police report was filed at…”
2026-06-19 · Fuel/Propulsion System“the mazda cx-9 is having the same fuel pump issues that was recalled up until 2018 models. the issue with the lean codes and faulty fuel pump continues…”
2026-06-01 · Fuel/Propulsion System“prior to [xxx] the vehicle ran rough and sputter excessively. i took car to local repair shop. diagnostic equipment determined the fuel injector needed to be replaced. vehicle ran better but continued to sputter and ride rough on occasion. prior to [xxx], the vehicle stopped operating properly. the vehicle would not travel faster than 20 mph and so…”
2026-03-17 · Back Over Prevention: Warnings“warning signal front camera sensor system malfunction forward smart city brake support malfunction when this initial happen the steering wheel becomes hard to maneuver than releases the front and back cameras are clear from any debris or obstructions what should i do next? …”
2026-03-01 · Tires“all 4 of my bh255/50r20 xl 109v nokian wr g4 vehicle tires are exhibiting abnormal tread degradation and excessive sidewall cracking. the tire defect includes a circumferential crack along the top of all 4 tires, where the top of the tire's sidewall and tread base meet. upon tire inspection, the structural integrity and safety of these tires with c…”
2026-02-02 · Unknown Or Other“the information screen is getting 'spider cracks" spreading across the face and turning opaque making the information unreadable. mazda is apparently aware of this defect and issued a tsb for earlier models. dealers were unhelpful and quoted $1000 - $3000 to repair depending on the vin.…”
2025-06-10 · Unknown Or Other“the vehicle will hesitate/stall while driving down the road. the vehicle has done this multiple times and has actually shut off on 2 different occasions while at a stop. on 2 occasions now the vehicle has not wanted to start. i have taken vehicle to mazda dealership and they can never duplicate it. when they check for any codes, the vehicle compute…”
2025-05-22 · Service Brakes“vehicle randomly displays "smart brake system malfunction," "forward smart city brake malfunction" and " front radar system malfunction." this has been going on for at least a year. i will be driving on a highway, trying to accelerate and these messages will pop up. i'm not able to accelerate when these messages pop up and i have to turn on my haza…”
2025-05-01 · Service Brakes“i've had it repaired for over 30+ times. i'm tired of the car not being fixed. the last visit i was told maybe its the way i drive. …”
2025-04-14 · Power Train“the vehicle was overheating and a message came up that power will be reduced. then it would go away and come up every 3 minutes while driving. i brought it to the service center, we filled it up with coolant and the issue kept coming back this time with a lot of white smoke coming out at vehicle start up. my mechanic said this is a bigger issue …”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.