I don't think car alarms detect these kinds of vibrations. It's specifically tilt and more impactful stuff. Certainly, the alarm is never going off when I get my car back via the lifts that I've used. It's probably too smooth.

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walrus01 3 hours ago | parent | next [-]

Car alarms go off all the time on ferries from cars that really don't like being locked and moved.

	▲	0x3f 3 hours ago \| parent \| next [-]
		Ferries tilt and jolt in a way that predictable-path car lifts don't.
	▲	kvirani 3 hours ago \| parent \| prev [-]
		Yes I see this all the time on BC ferries. Usually an Audi or similar

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papercrane 4 hours ago | parent | prev [-]

The problem will be aftermarket car alarms. There used to be a car that parked on the street near my apartment that would go off ever time a bus went by it.

	▲	eliseumds 2 hours ago \| parent \| next [-]
		Some OEM systems are sensitive too. My mother has a Hyundai that triggers the alarm whenever a heavy truck drives by.
	▲	egeozcan 2 hours ago \| parent \| prev [-]
		There's even a somewhat famous song about that: https://www.youtube.com/watch?v=6Z-8vy6sPQQ