Does anyone else's car make strange noises inside? My car always has these noises, but the dealership can't find the problem!

Hey everyone, when you auto park your new GA8 and then start it again, do you hear a creaking sound? I haven't noticed that with other cars. Also, sometimes when braking automatically and the speed is close to 0, I feel the brake pedal jitter downward with a continuous noise. It's happened twice in 7000 kilometers. It doesn't affect the use, but I'm curious. Could this be a sign of a potential future issue?

What could be the issue if the start-stop system is not working?