···
Log in / Register

Does a New Car Need Polishing Before Crystal Coating?

4 Answers
GeorgeDella
07/29/25 11:09am
Crystal coating a new car does not require polishing. Whether polishing is needed before crystal coating a new car mainly depends on the following factors: 1. If the new car has just been delivered and hasn't undergone long-distance transportation or prolonged storage, the paint surface will be smooth without an oxidation layer. In this case, polishing is unnecessary, and crystal coating can be applied directly. 2. If the car has been transported over long distances or stored for an extended period, resulting in a noticeable oxidation layer on the paint surface, light polishing is required to remove it. This ensures the crystal coating adheres fully to the paint surface, providing effective protection. Additional Information: 1. Waxing can be done after crystal coating, but it is not necessary. 2. Crystal coating is essentially an upgraded version of car waxing. It enhances the brightness and hardness of the paint, offering protection. After crystal coating, car owners will notice that the paint appears more transparent and glossy, with increased resistance to scratches and corrosion.
Was this review help?
18
1
Share
Frank
08/13/25 5:40pm
As a seasoned professional in the automotive detailing industry, I've handled numerous new car ceramic coating jobs at the shop and found that most new vehicles don't require polishing. The factory paint on new cars is already smooth and even—polishing is primarily meant to address scratches or oxidation on older vehicles. If you immediately subject a new car to machine polishing, it might actually thin out the original protective paint layer and even leave micro-scratches. I've seen cases where over-polishing new cars led to premature paint dullness and aging. The optimal process is: start with a thorough deep cleaning to remove grease and transport residues; then wipe the surface with a degreaser to ensure the ceramic coating adheres properly; only consider light spot polishing if there are minor imperfections like shipping scratches. This approach saves time and money while being safer, yet still delivers top-tier shine after coating. In short, polishing isn't a standard step for new cars—blindly adding it carries significant risks.
Was this review help?
6
3
Share
Expand All
Poppy
10/08/25 2:37am
I've driven several cars, and for the new ones, I had ceramic coating applied right after delivery. I remember the shop technician didn't recommend polishing at that time. From my experience, the paint on new cars is mostly in perfect condition, so polishing is unnecessary and just adds a few hundred yuan in cost and at least half an hour of extra work. Once, a friend polished his new car before applying ceramic coating, and while it looked shinier, he later noticed the paint became thinner and more prone to collecting dust. The main purpose of ceramic coating is corrosion resistance and hydrophobicity, so polishing a new car isn't needed; just wash and decontaminate it properly for the coating to adhere. Fellow car enthusiasts have shared similar stories: if there are minor imperfections on a new car, only mild treatment is required. I recommend consulting a professional shop before taking action on a new car—skipping the polishing step is both cost-effective and reassuring.
Was this review help?
12
4
Share
Expand All
DeCecilia
11/21/25 3:56am
I'm quite particular about vehicle protection and often opt for ceramic coating on new cars, believing that a light polish can enhance the effect. Even though a car is new, there might be tiny particles or wax residue from transportation, which can affect the adhesion of the ceramic coating. I prefer using an ultra-fine polish to gently buff the surface without going too deep—just enough to remove hidden imperfections. This ensures the ceramic coating adheres more evenly and leaves the surface glossier. When done by a professional with proper technique, there's no risk, and it can even extend the coating's lifespan. I've seen bubbling issues with ceramic coatings applied to unpolished new cars. The key is moderation—assess the new car's condition before deciding on any treatment.
Was this review help?
17
1
Share
Expand All
More Forum Discussions

Is it really not advisable to choose a license plate number with the digit 4?

Believing that the digit '4' is unlucky is a superstitious notion that goes against the spirit of modern scientific development. Here is the relevant information: 1. Structure: The license plate number for automobiles has a two-row structure, with the top row being the motor vehicle registration authority code and the bottom row being the plate number. Motorcycle license plate numbers have a left-right structure, with the left side being the motor vehicle registration authority code and the right side being the plate number. 2. Character count: The motor vehicle registration authority code consists of 2 characters, combining a Chinese character and an English letter. The Chinese character is the abbreviation of the province, autonomous region, or municipality directly under the central government, while the English letter represents the code of the vehicle management office. For automobile license plates, the motor vehicle registration authority code is located in the center at the top of the plate, with the Chinese character and English letter arranged horizontally. For motorcycle license plates, the motor vehicle registration authority code is located on the left side of the plate, with the Chinese character and English letter arranged vertically.
14
5
Share

What do MAX and ECO mean in the Binghu Car Refrigerator?

ECO stands for the initials of three English words: Ecology, Conservation, and Optimization. It is an energy-saving mode for vehicles. Activating this mode can achieve the effect of saving energy. The principle of ECO: ECO mainly involves making comprehensive judgments and analyses during vehicle movement regarding factors that affect fuel consumption, such as automatic transmission gear position, engine speed, vehicle speed, braking, and transmission oil temperature. The ECU control unit calculates the optimal amount of fuel to provide to the engine for operation, effectively reducing fuel consumption compared to normal driving modes. Simply put, it controls the engine speed with reasonable gear positions to reduce unnecessary fuel consumption. In a few cases, there is no need to activate ECO: When the car is driving at high speed (up to 100km/h), even if ECO is turned on, the vehicle's computer will prioritize speed, and the ECO mode will automatically deactivate. When a large torque output is needed, such as when climbing a mountain, the engine computer will prioritize ensuring and providing sufficient power to drive the vehicle, and the ECO mode will automatically deactivate.
14
4
Share

What does DVP mean in the automotive industry?

In the automotive industry, DVP refers to Design-Verification-Plan, which is the test plan document. It includes bench tests and vehicle tests. The purpose is to ensure that the designed parts meet functional requirements and satisfy design specifications during future use. Type Approval Test: The type approval test for mass-produced vehicles is conducted before the official production of the vehicle or its main components. It aims to evaluate the performance, efficiency, reliability, durability, and adaptability of the vehicle or components to ensure they meet usage requirements. Inspection Test: This test is conducted during the vehicle production process to sample-check products and assess production quality. A certain number of products from each batch, or several vehicles per year or half-year, are selected for inspection tests according to specified procedures to identify and promptly correct any issues in craftsmanship or materials. Development and Research Test: This test is used for the development, research, design, and testing of new vehicle types, including new structures, materials, and theories. Since the methods and facilities used in automotive design and scientific research are largely similar, automotive manufacturers often establish design and research centers. These centers not only engage in product design and improvement but also conduct fundamental research to provide technical reserves. These tasks often require extensive testing.
8
4
Share

How to Dispose of Scrapped Vehicles?

For vehicles with expired annual inspections that meet the scrapping conditions, after clearing all traffic violations, the scrapping procedures can be directly processed. Below is a detailed introduction to the disposal of vehicles that have reached their scrapping deadline: 1. Scrapping conditions: Light and mini trucks (including off-road types) and mining operation vehicles with a cumulative mileage of 300,000 kilometers; heavy and medium trucks (including off-road types) with a cumulative mileage of 400,000 kilometers; extra-large, large, medium, light, and mini buses (including off-road types) and sedans with a cumulative mileage of 500,000 kilometers; other vehicles with a cumulative mileage of 450,000 kilometers. 2. Other conditions: Additionally, vehicles that are severely damaged or in poor technical condition due to various reasons and cannot be repaired; models that have been phased out with no available parts; vehicles that, after long-term use, exceed the national standard fuel consumption by 15%; and those that still fail to meet the national technical safety requirements for motor vehicle operation after repairs and adjustments.
19
1
Share

What Causes Steering Wheel Vibration at Speeds Above 130 km/h?

Tire dynamic imbalance, significant differences in tire pressure among the four tires, and poor four-wheel alignment can cause steering wheel vibration at speeds above 130 km/h. Tire Dynamic Imbalance: If a tire experiences a strong localized impact during driving, it can cause the balance weights to fall off or become damaged, thereby affecting the tire's dynamic balance. Significant Differences in Tire Pressure Among the Four Tires: When there is a significant difference in tire pressure among the four tires, especially between the left and right wheels, the car will experience noticeable body jolts and steering wheel vibration during high-speed driving. Poor Four-Wheel Alignment: When the four-wheel alignment has a large deviation angle, the car may exhibit phenomena such as body drift and vibration during high-speed driving. It can also lead to uneven tire wear, accelerating tire wear and shortening the tire's service life. Solutions for Steering Wheel Vibration at Speeds Above 130 km/h: When the car experiences steering wheel vibration at high speeds, the first step is to check and adjust the tire pressure. Then, perform a dynamic balance check on all four tires, and finally, conduct a four-wheel alignment.
18
3
Share

What is the normal turbo boost pressure?

For ordinary family cars, the normal turbo boost pressure ranges between 1.2bar and 1.5bar. The maintenance methods for turbocharged engines are as follows: 1. Use high-grade synthetic oil: Since the combustion temperature and working pressure inside a turbocharged engine are significantly higher than those of a naturally aspirated engine during operation, turbocharged engines have higher requirements for lubrication and cooling. To ensure normal engine operation under more demanding working conditions, conventional mineral oil can no longer meet the requirements, and synthetic oil with better lubrication and cleaning capabilities must be used. Synthetic oil far surpasses mineral oil in terms of lubrication, cleaning, and anti-friction capabilities, and it also forms a lubricating film quickly, with high strength and good stability. Therefore, turbocharged models must use synthetic oil, preferably full synthetic oil. 2. Direct injection engines require the use of fuel injector cleaner: Direct injection sprays fuel directly into the cylinder, where it mixes with air. The ECU can precisely control the amount and timing of fuel injection based on the amount of air intake, ensuring that the air-fuel mixture burns more completely, thereby reducing fuel consumption and improving engine performance. However, because the fuel injectors in direct injection engines are placed directly inside the cylinders, they are prone to gum and carbon deposits. It is generally recommended to regularly add fuel injector cleaner to gasoline to clean the injectors. If the gum and carbon deposits on the injectors are severe, they need to be removed for cleaning. 3. Regular inspection: Due to the numerous components in a turbocharged engine, it is important to frequently check for unusual noises or vibrations in the turbocharger, and to inspect the lubrication pipes and joints for leaks. Check whether there is residual oil at the turbocharger exhaust outlet or oil on the walls of the compressor intake pipe. Oil consumption in turbocharged engines is not a common issue, but as a precaution, it is recommended that owners regularly pull out the engine oil dipstick to check oil consumption and ensure the oil level is within the normal range. If visible oil consumption is detected, it is best to visit a repair station for inspection as soon as possible.
11
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.