
Generally, hitting the chassis can cause scratches on the underside of the car, leading to deformation of the bottom. In severe cases, it may damage the engine oil pan, and the scratched areas are prone to rust. It can also cause brake fluid lines to rupture, as modern cars widely use hydraulic brake systems, and hitting the chassis can easily lead to brake fluid line breakage. Additionally, it is highly likely to cause the engine or transmission oil pan to crack, resulting in oil leakage. In such cases, prompt repairs are necessary to avoid permanent damage to the engine. To prevent chassis scratches and damage, applying an undercoating is an option. Car chassis undercoating can be sprayed on exposed areas such as the vehicle's undercarriage, wheel hubs, fuel tank, lower fenders, and trunk. Once dried, it forms a sturdy, elastic protective layer that not only prevents impacts from flying stones and gravel but also protects against moisture, acid rain, and salt corrosion on the metal parts of the chassis, preventing rust and ensuring driving safety. Another preventive measure is installing an engine guard. Engine guards are custom-designed protective devices for various car models, primarily aimed at preventing mud from covering the engine and protecting it from impacts caused by uneven road surfaces during driving, thereby avoiding engine damage.

I remember last year when I was driving in the countryside, I didn't notice a big pothole on the road, and the chassis directly hit a rock. At first, I didn't think much of it, but the next day I heard strange noises. Upon inspection, the oil pan was cracked, engine oil was leaking badly, and the exhaust pipe was damaged. This delayed my car repair for several days and cost me several hundred dollars. Since then, I've learned my lesson: don't underestimate chassis impacts. Underneath it are the fuel tank, drive shaft, and suspension. If they get damaged, it can lead to oil leaks, unstable steering, or even fire risks. Now, I drive slowly on rough roads. If there's an impact, I stop immediately to check or head straight to the repair shop to inspect if the anti-rust paint is scratched or if any parts are deformed, to prevent small issues from turning into big disasters.

I've been in the auto repair industry for many years and often see the troubles owners face after undercarriage impacts. Minor cases involve surface scratches on the rustproof coating, which can easily lead to rust. More severe impacts are worse - deformation of the oil pan or exhaust pipe can cause oil/gas leaks, resulting in loud noises while driving or a sharp increase in fuel consumption. The most serious impacts can damage suspension support arms, causing tire imbalance and brake delay, especially dangerous at high speeds. My advice: never delay after an impact - take it to a shop for a thorough inspection on a lift. Simple repairs like touch-up painting or part replacements can prevent future safety hazards.

Last week I drove over a speed bump too fast and heard a loud bang from the chassis, which really worried me. After checking some information, I learned that the chassis contains components like the fuel tank and drive shaft. Hitting them could cause leaks, loosening, increased noise, or even tire blowouts. A friend of mine had an accident because of this and later spent a lot of money repairing the suspension. Now I'm very careful, avoiding potholes when driving, and I immediately take the car to the garage for inspection after any impact to ensure safe driving.


