What are the hazards of rainwater to cars?

[MacValentina]

Paint aging, corrosion, and chassis erosion. The specific details are as follows: 1. A car rots from the bottom up: The chassis is the part closest to the ground and is severely affected by road conditions. Many cars, when lifted for maintenance, reveal rusted and corroded underbodies, with wheel wells even loosened or perforated. The main culprit is the corrosive nature of acid rain. 2. Erosion by acid rain: During summer thunderstorms with heavy rain and strong winds, vehicles parked outdoors not only face challenges to their paint but also suffer from acid rain erosion on the chassis. Additionally, thunderstorms cause road flooding, and after driving through water, acidic rainwater remains on the chassis. 3. Acid rain lingering on the chassis causes rust: Moreover, this acidic rainwater and vapor can seep into the car body through tiny chassis pores, affecting many components of the vehicle.