I believe I replied to you on benzworld as well, although what you are asking is common and very appropriate. I will not repeat myself but wanted to add that regarding 3rd party warranties, imo, looking at highly-rated companies backed by larger insurers and getting an exclusionary policy is the way to go. The exclusionary policies are typically the best they offer and, no surprise, the most expensive. They cover everything unless it is specifically excluded. Still must read the fine print and because the ABC is somewhat unique, although it is really another form of active suspension, I would insist that they included in writing that all components of the ABC suspension were covered. I wound up getting the MB warranty which picks up where the CPO runs out. Love my 2011, now with 25k miles.