I have a twenty year old Magic Chef (cheapo) that has lived in the garage for the lat 5 1/2 years. Hotter than Hades in summer, and occasional extreme cold in winter. No problems yet.
It usually has only a twelve pack in it. Kinda wasteful energy use for how much i use it, but the garage is my man cave, and I like having my cold beer nearby.
I blow out the coil every couple of years.