2024 Mazda CX-90 Reliability Report

Loss of propulsion is the core complaint. The car shudders, warns of a hybrid or engine malfunction, and either crawls at limp speed or stops in traffic and won't shift out of park. Two crashes are reported: a rear-end collision after a stall on a snowy highway pass, and a surge from a stop in EV mode that caused 2 injuries. Rough, delayed shifts between 2nd and 3rd gear also come up, along with i-Stop restart failures outside the build range of recall 24V-816 and long dealer stays waiting on engineering guidance.

Repeated loss of drive power, with the engine revving as if in neutral, leads this mixed group. Recurring engine and hybrid malfunction warnings that take weeks to repair come up just as often. Other reports cover lane assist that steers toward another lane or quits working, a 360-degree camera that goes blank, an infotainment screen that freezes and reboots, and air conditioning that blows warm air at stops. A peeling parking brake switch has cut a finger, and a sunroof shattered at highway speed.

Sudden power loss and limp mode account for most reports, often on highway on-ramps or at 70 to 75 mph. Repeated "Engine Malfunction" warnings return after recall work, and some owners link a failed fuel pump to recall 25V-568. One engine seized at about 28,100 miles and ended in a buyback. Other complaints describe rattling around 2,000 miles, a cracked radiator leaking coolant with no temperature warning, overheating, and a low-fuel light that stays on after a fill-up.

Adaptive cruise control brakes hard when passing a semi or box truck in the next lane, especially on curves, then may surge back to the set speed. Drivers report drops from 75 to 60 mph and close calls with cars behind them, and some dealers call the behavior normal. A smaller group describes unintended acceleration, both at highway speed without cruise on and while easing into a parking spot. The engine also sometimes fails to restart after shutting off in slowing traffic, and one car coasted to a stop in a freeway fast lane.

The driver-side mirror glass vibrates at speeds above 40 to 60 mph. That blurs the view behind and makes distances hard to judge, especially at night. The passenger mirror stays steady. Dealers confirm the problem, and some have replaced the glass under a service bulletin, but the vibration continues and owners report that Mazda has no fix. A separate report describes the passenger mirror folding in and down on its own and staying stuck until moved by hand.

Several of these 5 complaints describe brakes that stop responding, sometimes alongside engine and hybrid malfunction warnings. One crash with 2 injuries happened shortly after a control arm repair, when neither the brakes nor the steering responded. In other reports the brakes cut out while the engine knocked and lost power, then came back. There is also false emergency braking while passing a truck on a curve, plus loud squealing at low speed with a pedal that feels like ABS is engaging.

Sudden acceleration while parking at about 2 mph sent one car over a curb and into a tree, and the dealer found no cause. The power liftgate can keep closing on a person without warning beeps, and 1 injury is reported. Other complaints describe rear door seals that let in water and dust, which a dealer called a known issue, and a driver-side mirror that vibrates until it becomes unusable.