2019 Mazda CX-9

The dominant complaint pattern for the 2019 Mazda CX-9 centers on engine issues, which account for nearly a third of all reports. Owners most frequently describe coolant leaks, often traced to the cylinder head or turbocharger area, sometimes without any warning light activating beforehand. Several owners also report the engine entering a reduced-power mode unexpectedly while driving, cutting available thrust in moving traffic. Electrical complaints are the second most-reported area, with owners describing the infotainment touchscreen showing ghost inputs, surface cracking, or white spots, and at least one report of windshield wipers activating and remaining on without driver input. Suspension complaints, mostly involving control arm components, round out the top three but at lower volume. The coolant leak pattern stands out because multiple owners note the absence of any dashboard warning before discovering the leak or experiencing overheating symptoms.