During the last inspection my wiper blades should be replaced by the Mercedes customer service. With regard to my demand to the cost, I decided the wiper blades themselves to procure and install. No sooner said than done, sought on Amazon regarding my car type corresponding to wiper blades, ordered and received promptly delivered. I can only say, super quality (original Bosch), simple installation (just under one minute), and the matter was settled. Finally free now view and at an optimal price / performance ratio. Such things I'll never be carried out by the workshop, is so simple.