The boxing star captured his out-of-control ride on his own social media earlier this week -- trying to turn up from the backseat when Drake and Travis Scott's hit "Sicko Mode" started playing.

Broner leans over and unleashes a full-throated scream right in the driver's face -- before grabbing the volume knob and turning it to the max.

Then he started wildly dancing -- while the driver tried to focus on driving in the rain.

Finally, the driver has enough, slams on the brakes and pulls the car over -- demanding Broner and his crew get the hell out of the vehicle immediately.

A rep for Uber tells us ... company officials looked into the incident, and decided Broner's behavior was unacceptable and his access to the app has been revoked.