2016 Mazda Cx-9 problems, complaints & recalls
Most-reported problem areas: Engine (54) · Service Brakes (8) · Power Train (6)
🧭 Reliability snapshot
Compared against other Mazda Cx-9 model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
29 NHTSA complaints that reported an odometer reading.
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (613)
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 613 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-10-06 · Engine“we discovered the problem by accident -- pulled out of our garage and there was a coolant puddle on the garage floor. no dashboard warnings, no overheat messages, no visible symptoms before that. that's what makes this failure mode dangerous: it loses coolant silently, and you find out from a puddle or from an overheat, not from the car telling you…”
2026-09-30 · Engine“cracked head cyclinder leaking. unsafe to drive, coolant can leak into engine if not already. they are aware of it and extended a warranty for the issue in 2024. however people like me, my coolant didn't leak until this year 2026. there have been lawsuits on this issue, but they are still failing to address this issue. they created another part …”
2026-09-21 · Engine“my car have a manufacturer engine defect that the company or corporation is not willing to fix. only because i exceeded the warranty i call them (mazda) an told them that it wasn't under my control the these issues happened after the warranty expire. but they still refuse to help me.…”
2026-08-19 · Engine“engine revs or surges while in park, possibly faulty throttle box…”
2026-04-28 · Engine“the cylinder head (which involves the engine cooling system) has a known manufacturer defect that affects all year/models of the mazda cx-9 with turbo. the manufacturing defect poses a risk to motor vehicle safety in a group of vehicles or equipment of the same design and/or manufacturer. specifically, the overheating and failure of the engine can …”
2025-12-22 · Engine“i own a 2016 mazda cx9 touring fwd (180k miles). today my car was diagnosed with cracked cylinder head, resulting in coolant and oil leak from the head gasket. while there is a class action settlement about it where mazda accepted the manufacturing defect, they do not cover the engine repair/cylinder head replacement because my car's mile is over 1…”
2025-11-03 · Engine“in june of 2022 i started having a strong antifreeze/engine coolant smell inside the cab of my vehicle and also outside the vehicle. i had the car checked for a radiator leak, but there wasn’t one. i took my car into my local mazda where they found that the engine coolant was leaking into the heads of the engine. mazda kept my car for 5 months and …”
2025-10-25 · Engine“cylinder head crack. combustion gasses leaking into coolant causing overheat. combustion gasses bleeding into oil causing excessive crankcase pressure. …”
2025-09-16 · Engine And Engine Cooling · 148,000 mi“the contact owns a 2016 mazda cx-9. the contact stated that while driving approximately 45-50 mph, the vehicle suddenly lost motive power with white smoke coming from the front of the vehicle. the contact was able to get to the side of the road to inspect the vehicle and became aware that there was coolant splattered all over the engine compartment…”
2025-04-23 · Forward Collision Avoidance: Automatic Emergency Braking“smart city break malfunction warning light appears while driving. simultaneously the tire pressure warning appears. also, at the same time, the temperature reads -20 to -40 degrees. yes, vehicle is available for inspection. fearful that car could randomly break while driving putting myself and family in danger since there is a malfunction. mazda …”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.