NHTSA Complaint #11589406 — 2016 BMW X3

We have had several occurrences of the following issue during the last several months. When slowing the vehicle down at a traffic light/stop with the goal of bringing the vehicle to a complete halt, as the vehicle decelerates to almost a stop with the foot firmly on the brake pedal, there have been several instances where the engine suddenly revs up and the vehicle lunges forward instead of stopping. It is an intermittent issue which is very hard to predict. It has occurred on flat roads, or going downhill, a couple of times with the air conditioner on. It's a split second lunge needing one to apply brakes even harder. Since at other times, this doesn't happen it's very concerning since we're questioning the reliability of the vehicle. It's a matter of chance that this may cause rearending the vehicle ahead. Thankfully, that hasn't happened but have come within a hair of happening.