There have been several times when slowly backing up when monitoring the mirrors and backup camera that the car had a very violent stop. I wasn't going fast at all and was within two feet of objects that I'm very familiar with. My old car handled backing up fine and didn't stop so violently. The warning on the old car got quicker as I got closer. This Volvo does have an increasingly rapid beep too but as you monitor the space it jerks so hard before it's really close enough to hit. This week I was backing up in a parking lot with NOTHING around me. I was still going slowly but the backup camera picked up an asphalt strip in between two cement pads and jerked so hard I have had whiplash like symptoms right after and ever since. The car stopped so hard my neck snapped back and I hit my head on the headrest. This incident was the most violent but there have been others that are too harsh for the slow moving conditions and insignificance of the objects.