I can only speak for mine. For the last two summers, mine has not overheated. It is a 3 car garage with only room for one car. We always leave the car outside for a couple of hrs before bringing it inside, as it is the sec. car, it does not drive too often.
Must be the massive amount of concrete that keeps the temp stable, and the garage only gets about 3 hrs of sunlight in the morning. Hey, but things can change esp with global warming
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