I brought my 2014 E350 in for a problem sound that was baffling me. It was intermittent and frankly, I didn't think they would be able to diagnose it. Not only did they find the problem and correct it, they provided a loaner and performed the service at no charge. I was very impressed with the service department and immediately purchased an extended warranty from them. So now I'm covered until 2021 at which time I plan on purchasing another car from them. Great dealer to have here in Las Vegas.