What percentage of a car do the doors account for?
2 Answers
Car doors account for approximately 60% of the vehicle body. Doors provide access for drivers and passengers to enter and exit the vehicle, isolate external disturbances, and to some extent mitigate side impacts to protect occupants. The detailed introduction of car doors is as follows: Composition of car doors: Car doors generally consist of three parts: the door body, door accessories, and interior trim panels. The door body includes the inner door panel, outer door panel, door window frame, door reinforcement beam, and door reinforcement plate. Door accessories include door hinges, door opening limiters, door lock mechanisms, internal and external handles, door glass, window regulators, and sealing strips. Interior trim panels include fixing plates, core panels, interior upholstery, and inner armrests. Design requirements for car doors: Ensure convenience for passengers when entering and exiting the vehicle. During the opening process, there should be no interference with other parts. When the door is closed, it should lock securely and not open on its own while driving. The door mechanism should be easy to operate, including smooth closing and easy window operation. Good sealing performance is required.
As an ordinary person who drives frequently, I don't think doors account for that large a proportion of the entire vehicle—it mainly depends on the car model. For example, in a regular four-door sedan, doors probably make up about 2% to 5% of the total weight. If the car has an all-steel body, a single door might weigh around ten kilograms, while the whole vehicle could weigh over a thousand kilograms, so the proportion is quite small. However, in a two-door car, the doors might be larger, increasing the proportion slightly. SUVs are similar, with thicker doors possibly accounting for about 3% to 6%. The key is that a car's weight includes many components like the engine, seats, and wheels. Although doors are used daily, they're just a small part for entry and exit—don't expect them to take up much space. They are, however, quite important for driving safety. If the car has been modified, like with widened doors, the proportion might be higher, but overall, in regular family cars, doors are just a supporting feature.
