Is It Normal for a New Car to Have Abnormal Noises During the Break-in Period?

[LaEmmett]

No, it is not normal. Abnormal noises in a new car may indicate quality issues, assembly process problems, material defects, or mechanical faults. It is recommended to contact a 4S dealership for a comprehensive inspection to determine the cause. Generally, new cars undergo thorough inspections, so major faults should be rare. Below is additional information: 1. Improper operation by the owner: Incorrect gear shifting, incomplete gear engagement, or driving with the handbrake engaged can cause significant abnormal noises during driving. 2. Abnormal noises in a new car: This could be due to issues with the engine mounts. Replacing the mounts at a 4S dealership should resolve the problem. 3. Engine oil: If the oil dipstick is not tightened after use or the coolant cap is not properly secured after refilling, it may lead to abnormal noises. 4. Fuel system malfunction: If a new car is left parked for an extended period, especially in outdoor environments, moisture can seep into the fuel system and cause issues. 5. Spark plug carbon buildup: New cars are often transported manually over long distances, which can lead to carbon buildup and wear.