Mercedes Extended Warranty

I plan to buy a Mercedes C320 + 4 years at a private concessionaire (no showroom) in California. The car's mileage is 45000.
- Can I buy an extended warranty Mercedes / other?
- If yes, who are reliable providers of extended warranty on the market?

The car has no guarantee of origin to the left (because it is> 4 years).

Check out this link on my site, it will be a free quote, from there to shop and compare, good luck ... http://www.usedcartips.org/warranty.html

Most extended warranties are available when you buy from a dealer's showroom because new car dealers have specific and high standards set for quality and condition of the used cars they sell. In this way, the company extended warranty can ensure there are no pre-existing conditions for which they will be responsible - an impossible thing for you or a private seller to prove an extended warranty company.
In all extended warranties are scams anyway. They are only available on cars known to be in stable condition, they cover only the engine, transmission, and other important parts of the transmission, and they are generally expensive to buy and have high deductibles. They look nothing like the guarantees of origin, which cover virtually the whole car, excluding wear parts and have no deductibles. I do not recommend buying one from a dealer unless the car had high mileage, turbocharged or supercharged (ticket items usually covered and hard on the engine) and that you intend on driving very difficult and abused to the point where you could reasonably expect the failure of major components of transmission in the warranty period.
Otherwise, just use the money to have a reliable mechanic check the car over. It is cheaper and still give you an idea of what you can expect in the way of repair bills in the near future. Used cars are a gamble, but you can minimize the chance without forking over a lot of money on an extended warranty that offers little else, except a false sense of security.