···
Log in / Register

Why Do Unexplained Scratches Suddenly Appear on the Car Body?

4 Answers
DelDakota
07/29/25 1:34am

Sometimes we may unexpectedly discover various scratches of different sizes appearing on the car for no apparent reason. This could be caused by improper washing techniques during car cleaning, excessive or uneven polishing while wiping the car, or even due to minor collisions. For minor scratches, applying wax can help conceal them, or you may opt for coating or crystal treatments. Regular car detailing can eliminate potential hazards. Car detailing refers to the maintenance and care of a vehicle using specialized beauty care products tailored to different parts of the car based on their condition. Generally, establishing a reasonable car maintenance schedule helps keep the vehicle in optimal technical condition. Car detailing services include car washing, refurbishment, and other beauty treatments. By using high-quality maintenance products for targeted care on various parts of the car, the usability of the paint and the overall lifespan of the vehicle can be effectively extended.

Was this review help?
19
1
Share
LaBennett
08/12/25 11:24am

My car also got some inexplicable scratches a few days ago, which is quite puzzling. The reasons could be varied - maybe branches scraped it when parked outside, or kids playing nearby threw stones that hit the body. Using stiff brushes or improper high-pressure washing during car cleaning can also scratch the paint, so I recommend avoiding rough tools for DIY washing. For daily parking, choose open spaces away from bushes or areas with heavy bird droppings, as untreated droppings can corrode the surface. Be careful when scraping ice in winter to avoid scratching. If scratches appear frequently, check your paint thickness - regular waxing can reduce risks and extend paint life. Most importantly, address minor damage promptly to prevent rust.

Was this review help?
19
5
Share
Expand All
ValeriaLee
10/02/25 2:38am

As a long-term car owner, I often encounter issues with body scratches, primarily caused by external factors. Poor parking choices, such as being hit by other car doors, are common culprits. Improper operations at car washes, like using stiff brushes or leaving sand particles that scratch the surface, can also be to blame. Prevention hinges on daily habits: choose parking spots with ample space, avoiding areas near shrubs or sidewalks. When washing your car yourself, use soft cloths and professional cleaners to maintain a smooth paint surface. Regular waxing is also effective in resisting minor scratches and dirt. Don’t delay in addressing scratches—use touch-up paint for small areas to prevent corrosion. Check your insurance policy for accidental damage coverage to reduce repair costs. Develop a weekly habit of inspecting your car’s body to catch and address issues early, ensuring safety and peace of mind.

Was this review help?
5
4
Share
Expand All
StCarmen
11/15/25 4:22am

Scratches often occur due to environmental factors. Accumulated bird droppings can corrode the paint if not cleaned promptly, leading to shallow marks; tree branches swaying in the wind may scrape the car body; extreme weather conditions like sandstorms can cause fine scratches from particle friction. It's advisable to avoid parking under trees to minimize natural risk factors. Ensure cleaning tools are dirt-free during car washes and avoid using sand-containing sponges. Regular maintenance checks can prevent issues and extend paint longevity.

Was this review help?
6
4
Share
Expand All
More Forum Discussions

For a 2007 car, in which year does it require two inspections per year?

2007 cars require two inspections per year starting from 2022. Cars from 2007 undergo one annual inspection per year. Vehicles aged 6-15 years all require one inspection per year. Mandatory scrapping only occurs when the mileage reaches 600,000 kilometers. Vehicles over 15 years old require two inspections per year. Below is an introduction to vehicle inspection regulations: Passenger transport vehicles: Within 5 years, one inspection per year; beyond 5 years, one inspection every 6 months; Trucks and large/medium non-passenger transport vehicles: Within 10 years, one inspection per year; beyond 10 years, one inspection every 6 months; Small and micro non-passenger transport vehicles: Within 6 years, one inspection every 2 years; beyond 6 years, one inspection per year; beyond 15 years, one inspection every 6 months; Motorcycles: Within 4 years, one inspection every 2 years; beyond 4 years, one inspection per year; Tractors and other motor vehicles: One inspection per year. Operational vehicles that pass safety inspections within the specified period do not require repeated safety inspections; Vehicles beyond the scrapping age: Cannot be transferred (sold or bought), but can continue to be used. For transactions, the vehicle owner can first apply for a scrapping certificate (to deregister the vehicle's records) at the vehicle management office before proceeding with the transaction.
17
4
Share

How Many Types of Turbocharger Abnormal Noises Are There?

Turbocharger abnormal noises are mainly divided into two types. The first type is noise caused by wear in the support channel; the second type is noise caused by damage to the turbine blades, resulting in unstable operation of the turbocharger during operation. Either type will accelerate the damage to the turbocharger and requires timely repair at an auto repair shop. Reasons for turbocharger abnormal noises: Turbocharger damage, causing abnormal noises from metal friction. Air leakage in the intake or exhaust pipes, or cracks in the intercooler, leading to pressurized gas leakage. Rupture of the bypass valve diaphragm, causing gas leakage. Burrs or protrusions on the inner wall of the housing, generating noise when high-speed airflow passes through. Accumulation of dirt in the diffuser section of the turbocharger. Dirt accumulation on the impeller surface, obstructing airflow. Working principle of a turbocharger: A turbocharger mainly consists of a turbine and a compressor, connected by a drive shaft. The turbocharger is essentially an air compressor that increases air intake by compressing air. It uses the inertial force of exhaust gases from the engine to drive the turbine in the turbine chamber, which in turn drives the coaxial impeller. The impeller compresses the air delivered from the air filter pipe, pressurizing it before it enters the cylinder.
7
1
Share

Can You Paint a Car on Rainy Days?

Painting a car on rainy days is not advisable. Rainwater generally contains acidity, and acid rain can significantly damage the car's paint, leading to surface oxidation and loss of gloss. Additionally, the high humidity in the air after rain can affect the drying speed of the newly applied paint. Car Painting Process: Cleaning: First, thoroughly clean the car's surface to remove dust and debris, and determine the repair process. Oiling: Apply oil to the area to be painted. Sanding: Choose the appropriate sandpaper to sand the area to be painted, ensuring the paint is completely smoothed. Applying Putty: After sanding off all the paint, apply putty to the area. Cleaning and Masking: After applying the putty, use an air gun to blow away dust and impurities to prevent paint splatter. Painting: Spray the pre-mixed paint in 3-5 layers. Finishing: After the paint dries, sand and adjust any uneven areas to achieve a smooth and clean finish. Precautions After Car Painting: If the car has just been painted, avoid exposing the newly painted areas to water and dust. It's best not to drive the car in the rain, as the fresh paint is still delicate and can be marked by rainwater, sometimes leaving permanent marks that cannot be polished away. Parking in a garage at night is recommended.
18
5
Share

What is the specification of Volkswagen 50200 engine oil?

Volkswagen 50200 corresponds to the SN grade of engine oil. Introduction to engine oil: Engine oil is known as the blood of the engine. It plays roles in lubrication, cleaning, sealing, heat dissipation, buffering, and rust prevention within the engine. Without engine oil, the engine cannot function properly. Engine oil consists of base oil and additives, where additives enhance the oil's performance. Common additives include antioxidants and dispersants. Classification of engine oil: There are three types of engine oil: full synthetic oil, semi-synthetic oil, and mineral oil. The base oil of full synthetic oil is artificially synthesized, with nearly uniform molecular size and shape. Therefore, full synthetic oil offers superior lubrication performance and a longer service life. The base oil of mineral oil is refined from petroleum, with irregular molecular sizes and shapes.
7
3
Share

What is the reason for the shutdown of BMW N13 injection device 1?

BMW usually shuts down this type of injection device due to spark plug issues, which can be diagnosed using the swap method. The spark plugs in the N55 engine should be replaced every 60,000 kilometers. Introduction to the injection device: The water mist direct injection cooling system can significantly improve efficiency when the engine is under full load. It avoids rich fuel injection and reduces exhaust temperature. It can reduce daily driving fuel consumption by up to 8%. Lower exhaust temperatures also reduce the production of harmful substances. Fuel compatibility: Optimal power output can be achieved even with low-octane 95-grade fuel; therefore, turbocharged engines equipped with the water mist direct injection system are suitable for use worldwide.
19
4
Share

Where to Place the Jack When Changing Tires on the Equinox?

When changing tires on the Equinox, place the jack under the chassis near the wheel on the raised area. Operate the jack steadily and rhythmically when lifting, and lower it slowly. If using multiple jacks simultaneously, ensure synchronized operation. After using the jack, conduct a thorough inspection, check the hydraulic pressure and potential hazards, perform maintenance, and store it in an appropriate location. Function of the Jack: Jacks are primarily used in factories, mines, and transportation sectors for vehicle repairs and other lifting or supporting tasks. They are lightweight, sturdy, flexible, and reliable, allowing easy carrying and operation by a single person. Precautions for Using a Jack: The working medium for the jack is YB-N32 hydraulic oil. When the ambient temperature is below 10°C, switch to YB-N22 hydraulic oil. For temperatures above 40°C, use YB-N46 hydraulic oil.
19
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.