* After parking on a hill (with the car facing uphill) and putting the car in Park, as my wife was gathering her things to exit the car, the car suddenly released from Park and lurched backward, rolling into the parked car behind it. This caused a dent on the back of the ID4, fortunately no damage to the other car. And especially fortunate that no people were hurt. * We called the dealership and also opened a case with VW corporate. Both were very responsive. After a week of running tests, they returned the car to us because they couldn't reproduce the issue and didn't find any error codes through their diagnostics * While driving the car myself, I experienced the issue again in a different context -- I was pulling out of a parking lot, on a downramp waiting to enter the street. As I lifted my foot from the brake preparing to drive into the street, the car lurched backward, up the downramp. Fortunately there was no car behind me and no pedestrians walking by. We reported this to the dealership and VW. They immediately took the car in again and kept it another week. Ultimately one of the techs at the dealership did experience the issue. We have a written report from the dealership that says, "Verified customer concern. Vehicle slightly rolled back before moving forward." (report uploaded) However, neither the dealership nor VW could trace this to an "error code" or a root cause. With confirmation of the issue from the dealer, I formally asked VW to cover the costs of the rep