NHTSA Complaint #11587678 — 2018 MAZDA MAZDA3

The contact owns a 2018 Mazda Mazda3. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the engine. The contact stated while starting the vehicle, the abnormal sound would increase. The contact took the vehicle to an independent mechanic who listened to the engine and ended up removing pistons from the engine. The mechanic discovered there was an abnormal sound in cylinder #3 which caused the mechanic to remove the spark plugs. The contact linked the failure to NHTSA Campaign Number: 17V745000 (Engine and Engine Cooling). The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 118,000.