How many days of repair at a 4S shop require the provision of a replacement vehicle?

[BrielleDella]

4S shops are required to provide a replacement vehicle if the repair takes more than 7 days. The following are the car maintenance and repair items: 1. Air filter: The engine inhales a large amount of air during operation. If the air is not filtered, the dust in it will accelerate the wear of the piston group and cylinder. Larger particles entering between the piston and cylinder can also cause severe "cylinder scoring." The function of the air filter is to remove dust and particles from the air, ensuring that sufficient and clean air enters the cylinder. 2. Gasoline filter: The function of the gasoline filter is to provide clean fuel to the engine, filtering out water and impurities in the gasoline. This optimizes engine performance and provides the best protection for the engine.