The 1-800 number can be used for any year MB, and it doesn't matter if the first or tenth owner is calling. However, unless the car is in warranty, they will charge very high labor rates if they send out the rescue tech from a dealership, many times they simply offer to tow the car via towing company to the closest dealer. I think they will still jump start, change flat tire, bring a fuel can, for free. I read that some time ago, things could have changed. IMHO, a cell phone and a phone book will serve better, unless the car is still under warranty and the tow is on their dime.