2019 Mazda Cx-9 problems, complaints & recalls
Most-reported problem areas: Engine (15) · Power Train (4) · Electrical System (4)
🧭 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 (2)
Fuel System, Gasoline:delivery:fuel Pump 2021-11-12 · campaign 21V875000 · 121,038 vehicles
Defect: Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.
Risk: Fuel pump failure may cause an engine stall, increasing the risk of a crash.
Fix: Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 5321K.
Tires:tread/Belt 2019-10-28 · campaign 19V770000 · 146 vehicles
Defect: Mazda North American Operations (Mazda) is recalling certain 2019 CX-9 vehicles equipped with Sumitomo Falken ZIEX CT50 A/S tires, size P255/50R20 104V, having date code 1619. An incorrect rubber compound may have been used in the tire's manufacturing, allowing the tread to separate and detach.
Risk: A detached tire tread can decrease vehicle stability and increase the risk of a crash.
Fix: Mazda will notify owners, and dealers will inspect all four tire serial numbers, replacing the tires as necessary, free of charge. The recall began December 4, 2019. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4019J.
Service bulletins (394)
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
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
Unknown Or Other 2026-04-21 · SA-029-26 · Service Bulletin/Repair Instructions
this service alert supersedes the previously issued sa listed below: the changes are noted in red. sa-011/24 02/12/24, 06/06/24, 07/29/24 description mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. mazda recommends dealers follow the sch
Engine 2026-04-16 · SA-026-26 · Service Bulletin/Repair Instructions
this service alert supersedes the previously issued m-tip(s) listed below. the changes are noted in red text. mt-002/19 09/30/19 and 12/19/19 description if an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a repla
Showing the 6 most recent of 394 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-08-22 · Unknown Or Other“it’s now in the shop being torn down for further inspection but it looks to be a cracked cylinder head leak . …”
2026-07-10 · Power Train“the engine cylinder head developed an internal coolant leak, allowing coolant to enter the combustion chamber. this caused engine overheating and smoke coming from the tailpipe while driving. a dealer performed a coolant pressure test confirming coolant leaking into the combustion chamber, and wet/dry compression testing on all 4 cylinders showed l…”
2026-06-18 · Engine“my 2019 mazda cx-9 (vin [xxx]) suffered catastrophic cylinder head failure on the skyactiv-g 2.5t engine at approximately 124,000 miles. the failure is consistent with mazda tsb 01-013/21 (and successors 01-007/22, 01-010/24), in which mazda acknowledged that cylinder heads on this engine can crack at the stud bolt hole and exhaust manifold flange …”
2026-01-31 · Engine“- coolant leak at cylinder head and turbo at only 63,000 miles. - safety issue because no warning lamps or messages appeared and potential for car to overheat without coolant circulating in the system. car could breakdown at worst time and location. leaking coolant onto exhaust created potential for fire. - problem has not been confirmed by dealer …”
2026-01-12 · Unknown Or Other“mazda has a current service alert ("sa", sa-001/23) for issues with their gen 6 infotainment center display, which covers issues (e.g. ghost touch, surface peeling, spider cracks, and white dots) and defects the occur on the primary display of the car. this display provides the driver with essential car operational information. this service alert a…”
2025-12-19 · Visibility/Wiper · 56,199 mi“the contact owns a 2019 mazda cx-9. the contact stated that a state inspection was performed on the windshield for cracks. the contact stated that while driving in the rain, the front windshield wipers turned on independently with the switch in the off position. the contact was unable to turn off the windshield wipers. the contact pulled over to th…”
2025-09-30 · Engine“1. what component or system failed or malfunctioned, and is it available for inspection upon request? answer: engine failure due to overheating. 2. safety & indicators: answer: during evening rush hour traffic on a 3 lane highway my car went into a form of engine power saving mode while i had children in the vehicle; this was almost catastrophic …”
2025-08-19 · Suspension:front:control Arm:lower Arm“i am reporting a serious safety issue involving a defective suspension part (lower control arm) manufactured by dorman and purchased from an online auto parts retailer. on october 7, 2024, i ordered a dorman lower control arm for my vehicle and had it professionally installed on november 7, 2024 at johnston and magwood wheels & tires. on november…”
2025-06-29 · Engine“while driving on highway i get a message on my dashboard "high engine temperature/engine output may be limited" warning message. i pullover and see that the cooland is low. i wait for thee car to cool down and fill with coolant. after 5 minutes of driving, get the same message on dash. i had car towed to martin mazda in delaware. diagnosis is that …”
2025-06-13 · Power Train“vehicle jumps while driving. and sometimes stalls.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.