The transition from ICE to electric powertrain requires a complete review of the approach to quality and process controls. Some existing checks for ICE find even more extensive applications for the EV sector.
In aerospace as in many other industries, nondestructive testing (NDT) is the final quality assessment, the final check of a part before it enters into service. Without a quality process and excellent technicians working diligently with a lot of integrity, the parts may just not be of the highest quality and fit for the job.
If you were to ask an assembler at a Tesla factory how they measure the diameter of a piston, the response could very well be “what’s a piston?” If the same question were asked, a traditional combustion engine assembler would likely exclaim “with calipers, of course!”