I had occasion to call my local dealer for some part prices. When I asked him what those part numbers were, he told me it was not MB p;oicy to pass on part numbers as I might use them to source the bits somewhere else cheaper! I was amazed. He went on to tell me there there was no discount for parts on older MB cars either. Well there was, 20% off labour and 10% off parts, but only if you passed the car through the workshop........ Is this normal?