What is the difference between Bosch Car Service maintenance and 4S shops?

[MacLorenzo]

Here are the differences between Bosch Car Service maintenance and 4S shops: 1. Warranty aspect: If vehicle malfunctions occur at Bosch Car Service due to improper handling by social repair shops, use of non-genuine parts (e.g., leakage caused by improper installation of seals, engine failure due to inferior oil, etc.), and failure to provide maintenance contracts (repair orders), maintenance items, quality inspection reports, or completion certificates (copies), the quality warranty cannot be claimed. If vehicle damage is caused by the owner's failure to use, maintain, or repair the product correctly as required by the user manual (e.g., arbitrarily changing maintenance intervals or mileage, not replacing wear parts on time, etc.), the quality warranty cannot be claimed. Compared to 4S shops, Bosch Car Service channels may use non-genuine parts, lack professional equipment, or have substandard worker skills. 2. Maintenance aspect: All maintenance and repairs conducted at Bosch Car Service must comply with the vehicle manufacturer's maintenance manual and technical requirements. Many automakers require vehicles under warranty to be serviced at 4S shops; otherwise, the warranty will be void. 4S shops have significant advantages over external maintenance. When applying for the three guarantees or quality warranty at a 4S shop, it is necessary to present the maintenance contract (repair order), maintenance items, quality inspection report, and completion certificate (copy) from the social repair shop.