2016 Mazda CX-9

Typical pattern

1.4% of complaints about the 2016 Mazda CX-9 came in the first year, which is unremarkable for a 2016 vehicle — around the middle of the 199 model-years on record. The median complaint arrives at 6.9 yr in service. The most-reported system is engine (65 complaints), typically at 7.8 yr or about 40,000 miles.

Complaints: 142
Median age at failure: 6.9 yr
Median mileage: 34,000 n=46
Crash / fire / tow: 7% of reports
Safety recalls: 0

In owners’ own words

Engine 60,000 mi 3.8 yr in service

FAILS TO ACCELERATE AND CHANGE GEARS. THIS HAS BEEN HAPPENING SINCE WE PURCHASED THE VEHICLE. IT HAS BEEN BACK TO THE DEALERSHIP MULTIPLE TIME AND HAS NOT BEEN RESOLVED. THEY ARE UNABLE TO FIND ANYTHING WRONG. THE ENGINE IS A 2.5 L TURBO. THIS HAPPENS UNEXPECTEDLY WHILE DRIVING MAKING IT HARD TO GET ON TO THE HIGHWAY OR CHANGE LANES.

Engine mileage not reported 6.2 yr in service

Dealer diagnosed manufacturing defect that caused crack in head. {Which could lead to engine failure, and subsequent accident due to engine failure during operation.} Engine lost coolant. No overheating noted. No warning/error codes noted.

Engine mileage not reported 6.7 yr in service

Cylinder head cracked, leaking coolant and causing engine overheated , potential fire hazard . Coolant also leaked and mixed in with oil cycling through engine , causing permanent damage to the engine , resulting engine to be fully replaced

Other CX-9 model years

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.

2016 Mazda CX-9

When each system is reported — middle 50% of complaints

In owners’ own words

Other CX-9 model years

How to read this