There are many types of auto parts. Generally speaking, the total number of parts for trucks reaches 7,000 to 8,000, while the total number of parts for cars is even higher, reaching more than 10,000. In the total cost of a car, the cost of parts accounts for 70% to 80%. If we look at the materials, uses, structural functions, and technological content of auto parts, they can be roughly divided into the following categories:
1. Parts can be divided into metal parts and non-metal parts according to their materials
2. Parts can be divided into parts for automobile manufacturing and parts for automobile maintenance according to their uses
3. Parts can be divided into engine systems, power systems, transmission systems, suspension systems, brake systems, electrical systems, and others (general supplies, loading tools, etc.) according to their nature
4. From the perspective of modular supply of parts, auto parts can be divided into several levels: "module → assembly → component → part"