Some reading about the value of a carmax warranty for unreliable luxury cars:

http://dougdemuro.jalopnik.com/why-your-next-unreliable-luxury-car-should-come-from-ca-814250605

Just a warning- the upkeep and maintenance of a Mercedes is crazy. The car is going to cost you way more than you think- even with a warranty.

We have purchased aftermarket warranties on three different vehicles (American coupe, American SUV, and German sedan) and they have all paid for themselves.

I purchased an aftermarket/extended warranty on my VW when I bought it in 2002. I planned on hanging on to it a long time. And I have. I still drive (and love) it. It was worth every penny to me.

OP here...can you recommend you warranty company?

I have purchased an aftermarked on my Audi. It paid for itself. Shop around!

Didn't do bumper to bumper, but the warranty we bought on our 2007 Volvo (bought in 2010) has already paid for itself. On another note, don't buy a Volvo - repairs are a b@$#^%

We don't, but I would warn you against buying a used car with high miles. We bought a 2006 Mercedes in 2010 w/only 20,000 miles. We haven't had any problems with it at all. Did not buy a warranty.

Has anyone had experience buying a used car with high miles and purchasing a bumper to bumper warranty?