It depends on the car, but mainly drivetrain parts(motor, accessories, transmission) suspension, rims and sometimes body panels, frames, interior trim.
For the most part the entire body is made of steel. Some cars have aluminum hoods, trunk lids, and even fenders. There have been cars where the entire body was aluminum or carbon fiber. Some engine parts are steel, wheels may be steel, and other parts in the car are made of steel.
The Audi A2
Most do use aluminum parts.
Steel - strength Aluminum - light weight
Most cars have some aluminum in the structure, but for the most part, car bodies are sheet steel. The 1980s DeLorean was constructed from aluminum.
cars cans
Most classic American cars are made out of steel and aluminum. This is because steel and aluminum are sturdy and can withhold a beating and are easy to get dents out of.
Cars are made from many materials. Bodies can be made of metal, plastics, aluminum or even carbon fibers. Wheels and internal parts have many materials as well.
THE body is made outta sometimes plastic or aluminum and rims are made out of aluminum that's mostly new cars the older cars and trucks where heavy metal and didn't bend as easy
usually aluminum
Because it is strong, light and will not rust.
Cars were traditionally made out of steel and aluminum, but it is much more common to see cars with an abundance of fiberglass or plastic body panels.