[JDMSteven]

Looking to get a 2013+ Mercedes-Benz CLS 550 to replace my 2011 BMW 535i. I have had 4 BMW's and I truly love them, I really wanted a 650i GC next, but I am kind of put off after hearing so many problems with N63s and even TU's having major problems. I know that not all N63s are bad and there are some people who have great luck with them, but I'm ready for a change.

I have 2 family members who both have M278 powered vehicles (S550 and CLS 550) and both have had phenomenal ownership experiences. The CLS racked up 100k before he traded it in on a CLS 63 AMG and he's completely on board with the platform and motor.

Any owners/former owners of cars with this drivetrain in it? What was/is your ownership experience like? I'm looking for one owner vehicles, clean Carfax, and religious dealer/indy specialist serviced vehicles only, with say 50k miles or less. And throwing an extended warranty/CPO into the mix as well.