I have 2 x 512G dash cams bought 3 months apart and both have started to misbehave just as the warranty ran out. They have both eaten a memory card ( different brands) and when the ignition is turned off they flash on and off rapidly for 30 seconds. These are in different cars and behave the same in both, so it's not the cars that are the issue or the cars that that have broken them. It's fair to say that the turning on and off is probably what's corrupted the memory cards. In all other respects the 512g is fine, but I won't buy another one. My sons Mio has been faultless so may look at these next time.