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Most build within the last ~5-10 years (give or take) do so AFAIK. It's really obvious at idle on w/ early 8th gen Corollas for instance. You can watch the idle speed move around as the AC compressor cycles on/off and can hear some sort of vacuum operated passageway open up when the temp gets high enough. Newer cars are probably a lot more refined in terms of engagement, but it's pretty much run of the mill now.
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