No. A 10 year old Mercedes is not preferable to a newer used Honda Civic in terms of maintenance and reliability, unless you're a mechanic yourself. it's true that it's nicer vehicle, but having to go to a Mercedes service center instead of an independent shop really racks up the bills. If you're getting the used Mercedes because you don't have the finances to get a new one, the maintenance costs to have the Mercedes are going to sink you even further into debt, compared to a Honda Civic/equivalent.