Dash cam in India — which ones survive a car parked in the sun all afternoon? Dash Cams

Mount position helps too. Tucked up behind the rear-view mirror it sits in the mirror's shade for most of the day and runs measurably cooler than one stuck out in the middle of the screen. It also keeps it out of your eyeline and out of view from outside the car, which matters for a car parked on the street all day.

Since you mentioned insurance disputes specifically: check what your insurer will accept before buying. Some want continuous footage with a visible timestamp and some want the original file rather than an export, which affects whether you want a camera whose app re-encodes clips when you save them to your phone.

Adhesive is the second failure and it is fixable. The 3M-style pads that ship with cameras soften above a certain temperature and creep down the glass. Clean the glass with isopropyl, not glass cleaner, apply in the morning when the screen is cool, and leave it 24 hours before hanging the camera on it. Mine has held three summers since I started doing that.

The failure you described is almost certainly the internal power cell. Cameras built around a lithium battery die fast in a hot cabin; cameras built around a supercapacitor tolerate heat far better and are the only ones I would consider here. It is usually in the spec sheet as "supercapacitor" and if the listing does not say, assume it is a battery.

Cards fail in heat as well and they fail silently. Buy a high-endurance card, not a standard one, and format it in the camera every month. A camera that records nothing looks identical to a camera that is working right up until the day you need the file.

Terse: supercapacitor, high-endurance card, mount behind the mirror, hardwire off an accessory fuse so it powers down with the ignition. That set of choices is why my current one has outlived three previous ones.