I took my wife's Mercedes into Villa when the 'service engine' light came on. Our usual service provider, Star Automotive (Mercedes specialists) had closed up shop, so I called Villa and Eric said that they could handle the diagnostic process. I took it in and was a bit shocked by the $194 estimate to diagnose, but Robert called to explain the cause of the engine light coming on (oxygen sensor) and the cost would be $550+ to correct. I accepted, picked up the car, paid the bill and the engine light hasn't come on since. So I'm happy, my wife is happy getting her car back, so all is good.