If you leave your vehicle running for more than 3 minutes, you may have to pay a whopping $5,000 fine Many states actually have laws against letting your car idle, even in the cold Some states or cities even have laws against using automatic car starters Violators face a minimum fine of $500 Even if a few minutes of idling doesn't seem like a big cost to the environment, we have to think on a mass scale

Warm up your car this morning? That could be illegal where you live

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