Why does my IPhone battery drain when in my car?

My phone could be at 100% and within 10 minutes it'll be down to 1% when I'm in my car. Why is this?

This can't be only in your car but faster though if you are in a heated zone however your battery is fried need replacement. Btw I would assume u only activate your data mobile when out thats applicable to your car which drains battery faster… Playing music… All these would speed up the drain process but not in 10 min nor in an hour so your battery is spoiled. Bear in mind direct heat and sun will not only spoil your battery but also your phone so keep away from long and still positioning under direct sunlight.

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