I have had several DJI drones, but I was attracted to try the Autel drone 4T. I did all of the updates for the controller and drone. I launched the drone using the controller, it hovered at the 2.5-3' level, and would not respond to any controls. Then it started to drift, towards me, obstacle avoidance didn't provide any assistance, and it flew into my car slowly. Luckly no damage to the car, but damage to the camera (made buzzing noise) and broke two blades. Autel told me to send them the drone, which cost $300 in shipping with insurance, and I'm awaiting word from them. I'll update the post based on their feedback.