eli5: What makes electrical motors in cars so quiet?

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I mean in comparison with other motors, like power tools or even home appliances? Is it just sound insulation or is it a different kind of motor?

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Anonymous 0 Comments

Mainly because, without any emissions controls, mufflers, bushing motor mounts, internal combustion engines are insanely loud. Unbearably loud, even with all of that technology a lot of engines are still noticeably loud at mid-RPM ranges.

In comparison, an electric motor has no induction noise, it has no exhaust noise, it has no combustion noise.

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