2024 Mazda CX-90 Plug-In Hybrid engine problems
30 owner complaints filed with NHTSA name the engine on the 2024 Mazda CX-90 Plug-In Hybrid — 32% of all complaints for this model year.
What owners report
“Dear NHTSA Team, I am writing to formally report and follow up on a safety-related issue regarding my 2024 Mazda CX-90 PHEV, VIN: [XXX] . The vehicle has experienced repeated defects affecting critical safety systems, including: Engine overheating and cooling system failures Repeated engine…”
filed Dec 16, 2025
“I am reporting serious safety concerns with my Mazda CX-90 PHEV (leased, manufactured September 2023). These issues create unacceptable risk to occupants and other road users. Multiple Severe Recalls: My vehicle has had at least four major recalls: • 6323J – Engine & Motor Shutdown: Complete loss…”
filed Dec 11, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Other reported problem areas on the 2024 Mazda CX-90 Plug-In Hybrid
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.