In the wiring, as well as the windings of the starter and alternator there is copper.
The body, frame, seats, and wheels of almost all cars is steel of various grades. Wheels may also be aluminum alloys or chrome plated steel. Engine blocks are either cast iron or aluminum alloys. Transfer cases for 4wd trucks are sometimes made of magnesium and sometimes of aluminum alloys. Body parts may be chromed. Tires also contain steel. The control modules may contain various precious metals.
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