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I was recently discussing with a relative about electric cars. It was claimed that the motor of an electric car would age (wear and tear might be the english term?) and the efficiency would become dramatically worse after a few years of usage.

While I can imagine that the motor just breaks after a while, I was always under the assumption that it would perform until then just like on the first day.

Is it true that the motor of electric cars ages in a way that the energy consumption increases / potential travel distance significantly drops, even if the battery is ok?

What happens when it ages? Which parts break in which ways?

Martin Thoma
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Electric motors as used in cars do NOT experience serious wear and tear within a few years. The wear items in a DC electric motor are the bearings (which are chosen to furnish many years of operation without replacement) and the brushes (in motors that use them) which are cheap and easily replaceable.

niels nielsen
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