Hello,
unfortunately only three stars.
Picture quality is great.
What is bad:
The brackets (front and rear) can only be tilted up and down. Lateral movement is not possible. Even more stupid if you have a 3M adhesive mount instead of a suction cup.
Furthermore, the cable of the rear view camera is too thick and very short in length. Have only a Corsa F. So a small car. You can not lay the cable over the headliner, because there is the airbag. If you lay it from below, you need longer cable.