MB have not thought through the charging side of things when it comes to the additional work that can be involved on what can be relatively new properties. Also, they have chosen BP Pulse chargers which the less said about them the better. You can also bet that installers are getting paid peanuts to fit them so the overall quality has to be questioned. Personally, I would prefer is MB gave you the choice of a card or a lump sum paid directly to an installer I choose to install what I want. After all, I choose the car, I choose the adaptations so why can I choose the charger?