I found one for $600 with a bad transmission..missing and loose spark plugs, full of mouse nests, they packed gravel up onto the valve covers and wiring trays..But once it was tuned up it ran great until the cyl head leaks got worse..It was a mercedes certified sold in 06 ofr just under 4K all perfect, but I discovered on doing the head gasket they had not torqued the last head bolt at all.

Once the head was rebuilt and with new gasket, the engine has literally leaked two drops in 20K miles..Burns one quart per oil change, or less..

There is a host of issues from fuel pumps with intermittent failure and electrical issues... but once sorted out the car will ALWAYS start. Be sure it has that Delphi harness labeled with the tag behind the battery. Its an awesome engine I wish one could still buy in a newer mercedes and nearly went to the BMW which does still offer a straight six with comparable MPG but less power..