with excellent care how long will my 2008 mercedes r350 4matic last ...
It will last as long as you want to keep it, and as long as you want to put money into it.
Tom is right. A 100k plus miles is common for a Mercedes. But you need to maintain them. Good oil, good gas, regular maintenance and sensible driving are the only limits to how long most any modern car will last.
Ridiculous answers. 100k plus miles is common for any car, hell these days 200k plus is very common for just about any car. The question is what is the average lifespan of the average R350 mercedes? 200k? 300k??? or what? If you don't have an informed answer shut up.
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