{"source":"NHTSA vehicle owner complaint","officialApiUrl":"https://api.nhtsa.gov/complaints/odinumber?odinumber=11633924","retrievedAt":"2026-11-05T02:35:55.629Z","count":1,"results":[{"odiNumber":11633924,"manufacturer":"Mazda Motor Corp.","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/28/2024","dateComplaintFiled":"01/03/2025","vin":"JM3KFBCM4K1","components":"ENGINE","summary":"My 2019 Mazda CX-5 suddenly developed a major oil leak within the last 7 days.  My car has only 44,350 miles and I have had all scheduled and required maintenance completed timely, including oil/filter changes,  coolant level checking and maintenance, etc.  I took the car to an independent mechanic who diagnosed the problem as a cracked cylinder head.  I then took the car to a local Mazda dealer who confirmed the diagnosis and informed me that there would be no warranty coverage as my 60,000 mile/60 month powertrain warranty had expired 60 days earlier.  Some two years earlier my car's check engine light came on and overheated.  I took it to the same local dealer, who replaced the coolant control valve & related components.  In November 2024 I received a \"Warranty Extension Program\" letter from Mazda about the same fail-safe thermostat problem.  I believe this is relevant and related to the cracked cylinder head since almost all instances of a cracked cylinder head are due to engine overheating.  This issue put me at risk as I was close to driving the car with no oil and oil leaking heavily onto very hot engine components that could have resulted in a fire.  I am now facing repairs to this car between $4,800 and $6,000 and given the faulty/defective cylinder head from Mazda, I could face this safety issue again, as it will be replaced with a similar cylinder head from Mazda!","products":[{"type":"Vehicle","productYear":"2019","productMake":"MAZDA","productModel":"CX-5","manufacturer":"Mazda Motor Corp."}]}]}