A Mercedes Benz is renowned for often traveling several hundred thousand kilometers or more in its life. The record holder, a W115 240D acknowledged by Daimler-Benz and on display in their Stuttgart museum, clocked 4.6 million kilometers between 1976 to 2004, mostly working as a taxi based in Thessaloniki.During this time the owner was able to call upon the original engine and two spare units, deploying them on a rotational basis 11 times in total. Mercedes made badges available for their cars to mark each 250,000 kilometers the car had traveled.
http://www.worldcarfans.com/classics.cfm?classicid=5040929.001&mercedes=1.html/country/gcf