Went here last weekend with my '91 560SEL, had a few minor leaks, temp guage wasn't working and a couple other minor problems.

They re-routed some wires, tightened bolts on SLS pump (still not getting it to sit flush to base though) & told me a bunch of stuff I already knew. 3 hours and $300 bill, they're saying that they did a lot of "diagnosis" but a real MB mechanic would have been able to attach the kickdown cable, get temp guage working and fix a small coolant leak which turned out to be a loose hose clamp in an hour or two. They had no clue which wires went to engine temp sensors and therefore didn't fix problem or tell me what to do.

Nice guys but not too helpful and kind of a rip in my opinion.