GermanAuto are honest, trustworthy mechanics. Although they're indpt, they're part of the "Bosch Car Service" Authorized Dealers where specific parts (& potentially labor) is honored by other authorized dealers. IMHO, they earn, & deserve, the "Specialist" title. For our Mercedes', GermanAuto really is 2nd-to-none. -- In late-2012, I've had the same intermittent, recurring "Headlamp" warning light in the E350. They spent hrs of (labor) time to diagnose & fix. Charged me what they quoted (& a fraction of their actual time). That is honest, decent work. In early-Apr2013, I was stranded >1K miles from home, Mr Roberts emailed me a list of BOSCH authorized dealers close to my hotel & that 1st AutoRepair place I called told me that there were 3 alternators for my specific E320 car-model (all others went w/ the 1 std alternator for 90+% of Mercedes).