The body design is divided into two parts: styling design and engineering design. In engineering design, the body-in-white design workload is the largest, followed by the design of the interior system, and the design of the body exterior cover is the last. This may not be expected by ordinary people or non-industry people.
Automotive interiors mainly include the following subsystems: instrument panel system, auxiliary instrument panel system, door guard panel system, ceiling system, seat system, column guard panel system, other cabin interior fitting systems, cabin air circulation system, luggage In-box installation system, engine compartment installation system, carpet, seat belt, airbag, steering wheel, as well as interior lighting, interior acoustic system, etc.