Is It Normal for a New Car to Make Strange Noises When Driving on Bumpy Roads?

[SanHannah]

It is normal for a new car to make strange noises when driving on bumpy roads, mainly due to component misalignment, collisions, or electrical sounds. Below are detailed explanations and solutions: Component Misalignment: Gaps, deviations, or shifts between leather and plastic components can cause squeaking noises when squeezed or loosened on bumpy roads. Solution: Identify the source of the noise and use materials like tissue paper or rubber as spacers to block the gaps. Component Collisions: Noises caused by collisions between the car's audio speakers and other components. Solution: Tighten screws to secure the speakers, CD player, or other loose parts. Electrical Issues: Electrical sounds inside the car are usually louder when the vehicle is first started, especially during cold starts when audio, air conditioning, or other devices activate immediately or automatically. Solution: The noise will naturally disappear after the engine warms up or after driving for a while.

[AlainaLynn]

I have quite a bit of experience with strange noises in new cars going over bumpy roads. Just last week, while helping a friend inspect a car, we encountered a similar situation—the dashboard of that brand-new SUV creaked when going over speed bumps. In reality, new cars undergo road tests before leaving the factory, but parts can shift during transportation. The most common issue is interior panel clips not being secured tightly, causing plastic parts to rub against each other. Another possibility is wiring harnesses not being properly fixed, causing them to knock against the body when going over bumps. My suggestion is to first check yourself: empty the glove compartment to see if small items like coins are rolling around. If there's a persistent metallic clanging sound, pay attention to whether the suspension system bolts are loose. Don't rush back to the 4S dealership; observe after driving for half a month during the break-in period, as many strange noises will naturally disappear.

[StLeilani]

A neighbor in my community just picked up a new car a couple of days ago and encountered rattling noises over bumps. I accompanied him to get it checked. The mechanic used a stethoscope-like tool to search for a long time and found that the trunk cargo cover rail was lacking lubricant. New cars have grease automatically applied by machines on the assembly line, and sometimes individual components get missed. Another possibility is that the sealant on the body welding points hasn't fully dried—when going over potholes, slight deformation of the sheet metal can cause creaking sounds. It's recommended to record the frequency and location of the noises to help technicians diagnose the issue. If there's a rustling sound near the sunroof, it's likely due to dust or sand in the tracks. A reminder to everyone: don't try to dismantle the interior trim yourself, as the plastic clips are very easy to break.

[Gama]

As someone who frequently drives long distances, I believe the extent of new car noises should be evaluated. If it's just a faint rustling sound like plastic bags rubbing, there's generally no need to worry. Last year, while driving a friend's brand-new MPV on mountain roads, I noticed a rhythmic clicking sound from the second row, which turned out to be an unremoved label stuck in the seat rail. However, metallic knocking sounds should raise red flags—it could indicate improperly installed brake caliper pins or lower arm bushings. I recommend focusing on inspecting the door seals on all four doors; new car rubber components are particularly stiff and may rub against door frames on bumpy roads. If the noise persists after 500 kilometers, initiating the warranty claim process is the most hassle-free solution.