What Causes the Noise When the Qashqai is Running?
2 Answers
Introduction to the causes of noise in the Qashqai: 1. Intake system noise: High-speed gases pass through the air filter, intake pipe, and valves into the cylinders, generating strong aerodynamic noise during the flow process. Engine noise is mainly transmitted into the cabin through the front fenders, engine hood firewall, and exhaust pipe. 2. Road noise: Road noise is formed when the vehicle cuts through the wind at high speeds and the chassis vibrates during driving. Additionally, gravel impacting the chassis also produces road noise. Road noise is mainly transmitted into the cabin through the four doors, trunk, front and rear fenders, and front wheel arches. 3. Tire noise: Tire noise refers to the friction between the tires and the road surface when the vehicle is driving at high speeds. The level of tire noise depends on the road conditions and tire tread patterns—poorer road conditions result in louder tire noise. Moreover, there is a significant difference in tire noise between asphalt and concrete roads. Tire noise is mainly transmitted through the trunk and front and rear fenders.
My X-Trail makes quite annoying noises when running, mainly due to several possible reasons. Worn tires or foreign objects stuck in the tread can cause a humming sound, especially more noticeable at high speeds; aging suspension components like broken shock absorbers will produce creaking noises, particularly harsh when going over speed bumps; worn bearings emit a whirring sound that intensifies when turning; thin or warped brake pads create squeaking noises; and loose chassis components result in clanging impacts. Never underestimate these noises as they may indicate safety issues, such as a high risk of brake failure. I've been driving my X-Trail for five years, and whenever I notice problems, I first check tire pressure and remove debris; during regular maintenance, I have technicians thoroughly inspect the suspension and bearings; addressing issues early saves both hassle and money, otherwise delaying could lead to costly major repairs. Road safety comes first, so if you hear strange noises, pull over immediately.
