Does Every Car Have Abnormal Noises?

[DianaRose]

It is inevitable for cars to produce abnormal noises. Almost every car, regardless of how expensive it is, will develop abnormal noises after being used for some time. Here are some methods for daily car maintenance: 1. Choose the right engine oil: Please select the appropriate grade of engine oil according to the manufacturer's standards. For example, Mazda products currently use Mazda's original Dexelia engine oil. 2. Regularly replace the "three filters": The "three filters" refer to the air filter, oil filter, and fuel filter. Their function is to remove impurities from the air, oil, and fuel. After some time of use, these filters will become dirty to varying degrees, which can affect the normal operation of the vehicle. 3. Maintain good crankcase ventilation: The PCV valve in the vehicle can facilitate engine ventilation, but contaminants in the blow-by gas may deposit around the PCV valve, potentially causing it to clog. This can lead to polluted gases flowing back into the air filter, increasing fuel consumption, accelerating engine wear, and even damaging the engine. Therefore, it is particularly important to clean the dirt around the PCV valve.

[BraydenRose]

After driving for ten years, I think it's hard to say that every car absolutely has strange noises. Newly purchased cars are generally quite quiet, but after prolonged use, some sounds will inevitably appear. Last time when I was driving on mountain roads, I heard a rattling sound from the rear seat belt buckle—it turned out the slot was loose. The dashboard plastic parts expand after exposure to intense sun, occasionally making a squeaking noise when turning. My friend's old car is even more exaggerated; after the suspension bushings aged, it makes a clanking sound over speed bumps. However, metal impact noises from the chassis should not be taken lightly. Last time I heard a sound like a chain dragging on the ground, and it turned out the exhaust pipe hanger had broken. Actually, small objects vibrating in the car also count as strange noises, like a water bottle shaking in the door compartment. Nowadays, car manufacturing technology has improved a lot—my new energy vehicle has been running for two years without any noticeable sounds.

[AaliyahAnn]

Working in the repair shop dealing with abnormal noise cases every day, it's not accurate to say every car has them. Brand-new cars usually don't have any abnormal noises, but after running 30,000 to 50,000 kilometers, plastic clips may fatigue and create sounds. Last week, we handled a Tiguan case where the interior noise turned out to be a loose spring in the sunglasses holder. Mechanical component issues are more common, like squealing from worn brake pads or clunking sounds from a leaking steering gear. An unsecured spare tire can also bounce and rattle in the trunk. Actually, some abnormal noises are false alarms, like rubber seal friction noises in cold weather that disappear when temperatures rise. If you encounter persistent abnormal noises, don't tough it out—early inspection is more cost-effective than part replacement.

[Pedro]

The first year of a new car is usually free of strange noises, but over time, minor sounds may appear. My car now has 40,000 kilometers, and the dashboard occasionally squeaks, which I found is due to thermal expansion and contraction from the sun. During the last maintenance, the mechanic mentioned that the aging of the shock absorber top rubber could also cause a rattling sound. Many strange noises are self-inflicted: an unsecured phone mount can cause resonance, and tools in the trunk that aren’t fixed can rattle around. Once, a startling metal scraping sound turned out to be a small stone stuck in the brake disc. However, if you really encounter wheel noise, it’s best not to drive too fast. A friend’s car had a bad wheel bearing, producing a buzzing sound like an airplane taking off.