I'm very new to Mercedes Benz world. And I'm in Canada.
I have around $20k budget and I decided to buy a 2006 CLS 500 but I got some question about it.
I have read on different forums that a lot of CLS owners had problems with the transmission and the idle of the car. Should I just ignore this model or a warranty on transmission and engine would be enough. By the way the idle problem hasn't been solved for some people even by the Mercedes mechanics.

My second question is:
Should I go with a CLS executive edition (which I have no Idea what is extra in that edition) that is 100,000km on it for $21k with no accident OR a CLS that is 56,000km on it for $20k with $9k accident claim (no idea what was the accident)? How serious could a $9k accident be for this class?
Both are CLS 500 2006.

Any suggestion would be greatly appreciated.