What Causes the Abnormal Noise When Starting the Vehicle?

[JonathanRose]

Caused by various reasons. Below are the specific explanations: Reasons: Brake disc oxidation and rust; Foreign objects trapped in the tread pattern of the wheels; Suspension aging, with some supporting components in the suspension failing; The engine cylinder pressure not reaching the optimal state when starting; The engine drive belt being too hard when the car is cold. Starting methods: Adjust the seat before driving to ensure the feet can reach the clutch, brake, and accelerator; For manual transmission cars, engage first gear when starting, the clutch must be fully depressed, place the right foot on the accelerator, turn on the left signal light; Lift the left foot's clutch to nearly halfway and pause for a moment, release the handbrake promptly when feeling the vehicle shake; Lightly tap the accelerator, release the clutch when the car moves forward, and add a bit of throttle to start; For automatic transmission cars, adjust the seat before starting, depress the brake, shift the gear to D position, and start slowly by adding throttle.

[PaisleeLee]

I hear strange noises as soon as I start moving the car, and it feels really uncomfortable. I've encountered similar issues before, and it turned out to be possibly caused by worn clutch plates creating friction sounds, or insufficient transmission fluid generating noise. Additionally, loose ball joints in the suspension system, aging shock absorbers can easily produce creaking sounds, and even misaligned tires and brake discs can emit sharp noises. If the sound comes from the front, it's mostly a brake disc issue; if it's from the rear, the drive shaft or differential might be worn. I suggest you stop and check immediately—don't delay. Last time I ignored it, the repair costs doubled. It's safer to find a reliable repair shop for a diagnostic with proper equipment. During regular maintenance, have the mechanic take a quick look at these components to prevent small issues from becoming big problems.

[JasperDella]

I drive to work every day, and the strange noise when starting the car is really annoying. It's usually a problem with the clutch or transmission system. For example, unstable oil pressure can cause parts to rub and make noise, or cracked rubber parts in the suspension can creak. A clicking sound often indicates damage to the drivetrain, while a squeaking noise is usually caused by sand or dirt on the brake discs. Don’t underestimate these noises—they could be early signs of major issues, such as problems affecting steering safety. You can do a simple self-check: press the clutch in neutral and listen for sounds. If the noise persists, it’s not a clutch issue, and you should visit the 4S shop. Before driving, I always check the tires and chassis—this habit has saved me several repair costs.

[VanTyler]

There are several reasons for abnormal noises during startup. Worn clutch sounds like sandpaper rubbing; loose suspension produces creaking noises; damaged transmission components cause knocking sounds; dust on the brake system creates sharp squeals. All these need repair, otherwise the car's performance will deteriorate. I recommend a simple check: first park and try listening for the noise source in neutral. If possible, have it inspected by a professional shop as soon as possible to avoid turning it into a safety hazard.

[DelRebecca]

I get nervous whenever I hear abnormal noises during startup - safety first! Potential causes like loose suspension ball joints can make the vehicle unstable (dangerous), or clutch failure affecting acceleration. Immediately stop driving and check components like brake discs or tire connections. Last time I had similar sounds, it turned out to be loose chassis bolts - fixed after repair. Regular maintenance is crucial; don't wait for accidents to happen before taking action.

[HectorMarie]

The car makes abnormal noises when starting. I suspect it's a sign of daily wear, such as insufficient lubrication causing parts to rub, or aging rubber buffers. For prevention, check the chassis and transmission fluid levels monthly; avoid sudden acceleration while driving to reduce impact. Don't wait until the noise gets louder—change the oil and perform maintenance early. Doing this has made my car much more durable.