Is Loud Noise in a New Car a Quality Issue?

[Camilla]

Loud noise in a new car is not a normal phenomenon. It indicates an engine problem, which also falls under quality issues. Reasons for loud engine noise in a new car: Oil strainer issue: Poor sealing of the rubber ring causes the oil pump to fail in properly drawing up engine oil during operation, instead sucking in a large amount of air. This leads to insufficient lubrication in the engine system, particularly in the hydraulic valve lifters, resulting in metallic knocking sounds. If the oil strainer is clogged, it cannot properly draw oil into the engine lubrication system, causing poor lubrication. Abnormal engine speed: Most common abnormal engine noises depend on the engine's speed state. The noise may only occur during idling or low-speed operation, become chaotic at a certain speed, produce brief sounds during rapid deceleration, or appear during sudden acceleration and persist during high-speed operation.