Louden has been around for a long time, so that has to account for something. Initially, they seemed friendly as well, but buyer beware. I've visited the shop on three separate occasions and the experience has led me to the undeniable conclusion that Louden is significantly more expensive than the Mercedes dealership. I believe in paying for quality work by a certified shop, but 40% - 100% more expensive than the dealer? Last year I drove over a curb and damaged my suspension. I didn't have an appointment, but they told me they'd look at it and have an estimate by the end of the day. They didn't. I was told it would be done the next day by noon. When I called at 3:00 it hadn't been looked at. I went in to pick it up and they gave me an estimate on the way out the door. I brought it to Park Place Bodyworks in Dallas and the work was done for hundreds less. This month I brought my E350 in for oil change, cabin and engine filter replacement, and a break flush. The estimate was over $800? I told them to do the oil change and I'd take care of the rest. When I picked up the car I mentioned the estimate seemed high and what was the cost for just the break flush. I was told $290. Let’s do the math - if an oil change is $125 and the breaks were $290 the filter replacements came to over $400? BTW each filter was around $30 at NAPA. To make it better, I went to Park Place Grapevine and had the breaks flushed for $135 out the door. I emailed their Service Manager, James, about my experience, to make sure I wasn't missing something, his reply seemed to infer that Park Place would never perform the work for that price and they charge back Mercedes $450+ for warranty service. I emailed back my Park Place invoice and credit card receipt. You might guess, I never heard back from James. This is the icing on the cake - when I've inquired about the price on both occasions they seem almost combative in their "justification". I've been around long enough to know that when a contractor of any kind cannot walk through their estimates in a civilized tone, buyer beware.