This page covers 2 recalls, 35 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2015 Mazda CX-9.
19 mpg combined
12.4 L/100km
Small Sport Utility Vehicle 4WD
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted.
4/5 Overall
NHTSA 5-Star Safety Rating
Engine complaints dominate what 2015 CX-9 owners report, accounting for the largest share of filed complaints by a wide margin. The most consistent pattern involves overheating and stalling, owners describe the engine temperature spiking while driving at highway speeds, often accompanied by the oil warning light, a check engine light, or the vehicle becoming sluggish before shutting off. Several owners report the vehicle stalling and then restarting, only to stall again shortly after. Water pump failure comes up across multiple reports as the underlying event, with owners describing random stalling tied to cooling system problems. A handful of owners also note the engine shutting off without any warning lights appearing beforehand. Airbag and powertrain complaints each account for only two reports; a single powertrain complaint mentions difficulty sourcing a replacement transmission, with the owner noting the part was no longer available through a dealership.
35
Total Complaints
1
Crash-Related
2
With Injuries
By System
The 2015 Mazda CX-9 has 2 recalls, the most serious being a Takata airbag inflator that can explode and send metal fragments into the cabin, posing a risk of serious injury or death.
The airbag recall applies to vehicles sold or registered in high-humidity states and territories, including Florida, Texas, California, Hawaii, and several others. On the steering side, a steering knuckle can separate from the strut assembly, causing a sudden loss of steering control.
At a glance
What can fail
The passenger front air bag inflator may explode during a crash. This happens because the inflator's propellant degrades after years of exposure to humidity and temperature changes.
What the fix does
Dealers will replace your passenger front air bag inflator with a new one at no cost.
We may earn a commission for purchases made through these links.
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 2 tested variants; worst-case ratings shown.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The lower mounting nuts and bolts connecting the front strut assembly to the steering knuckle may loosen, potentially allowing the steering knuckle to separate.
What the fix does
Dealers will inspect the lower mounting bolts and nuts, replace any loose ones, and tighten them securely at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
