I purchased a 2021 BMW 530e from a BMW dealership still under warranty. Upon driving the vehicle I have noticed that there is a significant jerk forward when the car shifts from first to second. I have owned multiple BMW vehicles in the past and none of them exhibited this condition, but the three times it has been at the dealership for service they state it is normal. This jerking or unintended acceleration for first to second gear has almost cost me to get into multiple accidents and had to hit the brakes to keep it from rear ending the vehicle in front. This jerking motion has also caused some pain in my neck and nauseous feeling due to the fact that I am not commanding the vehicle to go faster but it does on its own.