
It causes some damage to the car, but the impact won't be too significant. However, the greatest harm is to humans. Here are the specific reasons: It causes certain wear to the engine, potentially requiring more frequent oil changes and . Fuel consumption will increase, and engine carbon buildup will also rise. The most severe consequence is the danger to human occupants. When stationary, the air inside the vehicle cannot circulate properly. If windows are closed, people may comfortably fall asleep and unknowingly suffer from oxygen deprivation or carbon monoxide poisoning. According to health standards: CO2 concentration in air shouldn't exceed 0.1%, while O2 levels should be maintained between 18-20.7%. Therefore, each person requires 20-25 cubic meters of fresh air per hour. Considering the limited conditions in vehicles, the minimum fresh air requirement is 11 cubic meters per hour. While the car suffers minor damage, human lives are at serious risk.


