2020 Mazda CX-9

Complaints filed on the 2020 CX-9 are spread across a modest number of reports, with engine behavior drawing the most attention. Several owners describe intermittent hesitation, stalling while in motion, and the engine shutting off completely at a stop, sometimes followed by difficulty restarting, and in multiple cases the vehicle's computer stored no useful codes, making dealer diagnosis difficult. A handful of owners also report repeated warnings tied to the forward automatic emergency braking and front radar system, with the vehicle limiting acceleration when those alerts trigger while driving at highway speeds. Two isolated reports are worth noting separately: one owner describes the infotainment touchscreen developing spreading cracks that turn the display opaque, and another reports abnormal tread wear and sidewall cracking on all four tires across multiple Nokian winter tires.