Does a New Car's Chassis Need Anti-Rust Paint?
4 Answers
A new car's chassis does not require anti-rust paint. The car chassis consists of the transmission system, running system, braking system, and steering system. The functions of the car chassis are: to support and install the car engine and its various component assemblies, forming the overall shape of the car, and to receive the power generated by the engine, ensuring normal movement when the car is in motion. Daily maintenance of the car chassis includes: 1. Ensuring good lubrication and proper adjustment of wheel hub bearings; 2. Proper adjustment of front wheel toe-in, and good lubrication and proper adjustment of wheel hub bearings; 3. Paying attention to changes in the front and rear axles and the frame; 4. Monitoring the working condition of the clutch; 5. Proper adjustment of brake clearance; 6. Checking for any damage to the leaf springs.
I bought a new car last year and didn’t apply any undercoating rustproofing at the time. As a result, the chassis started rusting during this year’s rainy season, costing me hundreds in repairs—a big lesson learned. Living in the southern region with frequent rainy seasons and humid air that easily corrodes metal, the factory-applied protection on new cars might not be thick enough. Applying a specialized anti-rust coating can enhance protection against things like gravel impact and salt corrosion, especially if the car is parked outside or often driven on muddy roads. Although a single application might cost a few hundred bucks, it can last three to five years and prevent rust from spreading to critical areas like the suspension. Now, I check and touch up the coating annually, and my car’s condition has improved significantly. I’d advise new car owners to prioritize this step after purchase and have it done professionally for the best results—don’t make the same mistake I did by trying to save money and regretting it later.
When buying a car, I consulted my mechanic friend who suggested that it's best to spray anti-rust paint on the new car's chassis to save a lot of future trouble. In northern winters, roads are often salted, which makes metal prone to rusting through. Once corrosion sets in, the repair costs can exceed the expense of spraying. After comparing, I found that spraying once costs about 300-500 yuan, and using epoxy or rubber-based coatings is more durable—far better than doing nothing. New cars come with thin factory coatings, so adding extra protection is reassuring, especially for vehicles frequently used off-road or for long-distance travel. From an economic perspective, this small investment extends the chassis's lifespan and prevents unexpected breakdowns. Since I sprayed mine, rust has significantly reduced, and regular maintenance is simple, saving both worry and money. Never overlook this step—it affects the overall health of the car body.
My hometown is by the sea, and if the new car's chassis isn't sprayed with anti-rust paint, it'll suffer immediately! Salt mist erosion is rapid, and rust spots spread quickly, making repairs difficult. The factory protection on new cars is limited, so applying an additional layer of paint is a wise move. Getting anti-rust agents sprayed at a 4S shop or a professional workshop ensures durable and aging-resistant results. It's highly recommended for owners in areas with frequent rain or snow to prevent corrosion and ensure safe driving. Regularly cleaning the sludge off the chassis also helps. After spraying, the car becomes more durable, giving you peace of mind.
