Could it be related to the parking brake ? Does it happen also if you didnt apply the parking brake the day before ?
This is what I was thinking. I have the electronic parking brake, but when I have it on over night in wet conditions, then unlock it - then I often hear a banging noise as soon as the car starts to move. Apparently the brake pads stick to the discs/drums (whatever the parking brake uses ))).I have the foot operated brake - always applied when parked. It could be the brakes binding after being left overnight possibly?