AUTONEWS

The most common mistake when washing a car: Here's how scratches on the paintwork occur
Before setting off on a trip, many drivers want their car to be clean and ready, so they often opt for a quick wash to make the vehicle look neat and well-maintained. However, that's when one of the most common mistakes when washing a car is often made - and unknowingly - which can damage the paintwork with the first pass with the sponge.
The most important thing is not how long you wash the car or how expensive the products you use are, but the order of the steps, writes Autonews.
Where the problem arises...The most common mistake is directly rubbing dirt on the bodywork. Dust and fine sand then act like sandpaper and create micro-scratches on the paintwork. Insect remains and bird droppings, which are hard and sticky, are particularly problematic.
That's why the first step is always - rinsing without touching. It is necessary to remove as much dirt as possible with water before the sponge even touches the surface.
Stubborn stains should first be soaked and left for a few minutes to soften, never scrubbing them dry.
The correct way to wash a car...After pre-washing, rinse with water under pressure, from top to bottom. Only then does the contact phase come:
-use a soft sponge or microfiber glove
-always soak them well with water and car shampoo
-wash with light, straight movements, without pressure
-avoid circular movements.
The type of product you use is also important. Dishwashing detergent removes the protective layer from the paint and damages the car in the long run. Special car shampoos create a protective layer and allow dirt to slide off more easily without scratching.
Also, don't overdo it with the amount of product - too much can leave marks and attract new dirt.
Details that make a difference...Washing in direct sunlight should be avoided, because water and shampoo dry quickly and leave stains. It is ideal to wash the car in the shade or when the temperatures are lower.
The interior is cleaned in a different order: first vacuuming to remove dust and sand, then wiping with appropriate agents.
Conclusion...Small, seemingly unimportant habits have a big impact on the condition of the car. With the right sequence and a careful approach, you can preserve the paint and keep your car in good condition without any extra effort.
The most common mistake when washing a car is rubbing the dirt against the paint, which turns dust and sand particles into "liquid sandpaper," causing micro-scratches and swirl marks. According to experts, incorrect techniques are responsible for up to 90% of the paint damage observed today.
How scratches happen(below):
-Lack of pre-washing: Skipping the initial rinse allows loose dirt to be dragged by the sponge or wash mitt directly onto the clear coat.
-Use of inappropriate tools: Traditional sponges and cotton cloths have flat surfaces that trap dirt between the tool and the paint, scratching the surface with each pass.
-Single bucket method: By using only one bucket, you rinse the dirty mitt in the same shampoo water, reintroducing sand and debris to the paint on the next pass.
-Circular movements: Rubbing in circles doesn't necessarily cause more scratches, but it makes them much more visible in sunlight, creating a "spider web" effect.
-Washing in direct sunlight: The heat causes soap and water to dry too quickly, leaving chemical residues that can corrode the varnish and mineral stains that are difficult to remove.
The most common, and arguably most destructive, mistake when washing a car is using dirty cleaning tools—specifically using a single bucket or a standard household sponge. This practice, combined with skipping a pre-rinse, turns the washing process into a "sandpaper effect," dragging dirt particles across the paintwork and causing thousands of micro-scratches known as swirl marks.
How scratches occur during a wash(below):
-The single bucket method: When using only one bucket, dirt particles from your car are trapped in the wash mitt or sponge. As you continue to wash, you are essentially rubbing that collected dirt back onto the car's paint, causing scratches.
-Dirty/rough sponges: Sponges have a flat surface that traps dirt between the tool and the paint, forcing contaminants to grind into the clear coat.
-Skipping pre-wash/rinse: Going straight to scrubbing means grinding dried dirt, dust, and sand into the surface. This creates thousands of microscopic scratches that make paint look hazy.
-Circular motions: Instinctively washing in circles creates "swirls"—a spiderweb pattern of scratches highly visible in direct sunlight.
-Using household soaps: Dish soap and detergents are too harsh and strip away protective wax, leaving the paint, which is only about 2-4 microns thick, unprotected.
-Drying with rough towels: Using old bath towels or air-drying leaves mineral deposits, while dragging rough material causes friction damage.
The Secret to a Scratch-Free WashTo avoid these issues, follow the professional, safe wash routine:
-Use the two-bucket method: Use one bucket with pH-balanced car shampoo , and a second bucket with plain water to rinse the mitt before dipping it back into the soapy water.
-Use microfiber wash mitts: These lift dirt away from the paint rather than pushing it around.
-Pre-rinse thoroughly: Use a hose or pressure washer to remove as much dirt as possible before touching the car.
-Wash in straight lines: Use straight-line motions—front-to-back or top-to-bottom—rather than circles to make any potential scratches much less visible.
-Use high-quality microfiber drying towels: Gently pat the car dry or drag the towel lightly, rather than scrubbing.
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