2018 Mazda CX9 recalls and problems

2 recalls and 128 owner complaints on file with NHTSA for the 2018 Mazda CX9.

2
recalls
128
owner complaints
4
complaints mentioning a crash
1
mentioning a fire

Recalls apply to specific production ranges. To see whether a particular car still has an open recall, enter its VIN at nhtsa.gov/recalls. Repairs for safety recalls are free at authorised dealers.

2018 Mazda CX9 recalls

Fuel system, gasoline: delivery, fuel pump

NHTSA campaign 21V875000 · reported November 12, 2021 · Mazda North American Operations · 121,038 vehicles potentially affected

The problem
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.
The risk
Fuel pump failure may cause an engine stall, increasing the risk of a crash.
The 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.

Electrical system: wiring

NHTSA campaign 19V403000 · reported May 30, 2019 · Mazda North American Operations · 7,854 vehicles potentially affected

The problem
Mazda North American Operations (Mazda) is recalling certain 2018 CX-9 vehicles. The wiring harness may disrupt electrical communications and disable the passenger frontal air bag, turn signals, and/or engine starting system.
The risk
The passenger frontal air bag may not deploy, increasing the risk of injury. Inoperable turn signals prevent the driver from signaling to other drivers, increasing the risk of crash.
The fix
Mazda will notify owners, and dealers will repair the wiring harnesses, free of charge. The recall began July 26, 2019. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 3419E.

Most reported problems

Areas named in owner complaints to NHTSA. One complaint can name several areas.

What owners report

Recent complaints filed with NHTSA, shortened. These are unverified accounts from owners, not findings.

Sep 17, 2026 · Engine · 124,000 miles

While driving at highway speed in heavy rain the oil light suddenly came on followed within 30 seconds by an urgent need to immediately stop the car due to overheating. There was no radiator fluid left due to the sudden and catastrophic structural failure caused by a known manufacturing defect. Mazda calls it csp-11…

Sep 15, 2026 · Engine

My 2018 Mazda Cx-9 equipped with the skyactiv-g 2.5T developed a serious cylinder-head/cooling-system failure. The vehicle began to lose coolant with no apparent external leak and subsequently displayed and engine -overheating warning. It continued to lose coolant after a flush. The Mazda dealership inspected the…

Aug 8, 2026 · Engine

I was driving home from work and may car started overheating out of nowhere. I was stuck in traffic and white smoke was exiting my exhaust. I pulled over and all of my coolant leaked out of my car. Took it the shop and they said I had a cracked head and need a whole new engine. I seen that there was a warranty sent…

Jul 15, 2026 · Engine

The cylinder head on this 2018 Mazda CX-9 (Skyactiv-G 2.5T engine) cracked, allowing engine coolant to leak and intermix with engine oil, causing loss of coolant and catastrophic engine failure. The vehicle became undriveable in the first week of November 2025 at approximately 125,019 miles and has remained inoperable…

Jun 8, 2026 · Seats

My passenger heated seats malfunction while I was driving. As I was driving on the highway I smelled something burning. I didn't know where the smell was coming from it was strong . Then while I'm driving on the highway my seat started to smoke a lot I got scared and pulled on side of the road. I realized my seat was…

CX9 model years compared

YearRecallsComplaintsCrashesFires
2015 23510
2016 010731
2017 06100
2018 212841
2019 25310
2020 11910
2021 14070

Across all years, the 2012 CX9 has the most complaints (221). All Mazda CX9 years →

Questions

Does the 2018 Mazda CX9 have any recalls?
Yes. NHTSA lists 2 recalls for the 2018 Mazda CX9, the most recent reported on November 12, 2021 (Fuel system, gasoline: delivery, fuel pump). Check a specific car by its VIN at nhtsa.gov/recalls.
What are the most common problems with the 2018 Mazda CX9?
Owners have filed 128 complaints with NHTSA. The most frequently reported area is engine (76 complaints), followed by unknown or other (19).
How many 2018 Mazda CX9 complaints mention a crash or fire?
4 of 128 complaints report a crash and 1 a fire; 2 injuries were reported in total. Complaints are unverified reports from owners.

Source: NHTSA recall and complaint data, updated October 27, 2026. Latest complaint received September 17, 2026.