NHTSA Complaint #11563532 — 2014 MAZDA MAZDA6

The incident occurred while operating a diligently maintained 2014 Mazda 6 Touring, overseen by dealership service. While driving, the check engine light illuminated, prompting an immediate halt. Upon inspection, a concerning observation was made: the coolant level was significantly low. Despite no apparent leaks, further examination revealed a crack in the cylinder head, allowing coolant to mix with the oil. This issue, specific to Mazda's 2.5L Skyactiv engine, has been identified as a manufacturing defect, independent of overheating. Notably, this problem has been echoed by multiple users, confirming the presence of defective cylinder heads in these vehicles. This flaw necessitates an expensive repair, absolving the vehicle owner of any responsibility. Despite the widespread occurrence of this issue, Mazda has declined to issue a recall for vehicles equipped with these faulty cylinder blocks. Online forums and discussions have highlighted numerous instances of identical cracks in the same location, affirming the prevalence of this problem with Mazda's 2.5L engines. This poses a serious concern for vehicle safety and warrants attention from both Mazda and vehicle owners. Additional information regarding this issue can be found through the provided links. [XXX] [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)