I have today redeemed a Groupon voucher in Cologne where my car was cleaned from the inside. The service provider has made me aware of several small stone strokes and a small crack in the windshield. That he does not do this out of good will is quite conscious and certainly part of the coupon marketing. However, the offer sounded very good: ==> I get this sort of again. However, I was told that the insurance of this discount does not contribute anything My insurer (Admiraldirekt.de) takes 20% of the costs “on top” or deducts them from the cost assumption for me in the event of infringement of the repair shop binding. This is also what the service provider wants to take over. Think of these are small goodies. I don’t know if they appear on an invoice, but I have been insured several times, that is free of charge for me – for the insurance too? Has someone already had experiences with such “offers”? What can be done for What difficulties are there, if any, in conjunction with my insurance? What should I – if I respond to the offer – necessarily consider? Would you advise me not to take such an action? The fact is: the stone strokes and the crack are clearly recognizable. Thank you in advance.