I wonder which car actually contains the most parts. I know the basic parts of the M3 will be Motor / Battery / Interior / etc. , however I would have to believe that the Rear Motor of the M3 contains billions of parts inside and would would surpass the ICE car part list all by itself. . I do understand that sections of the M3 Motor will not be serviceable, and that most people will consider the motor as 1 piece of the car even though there are billions of parts inside.