We originally found Dulles Shell Service Center through a groupon a few years ago and we've never gone anywhere else since! We take all of our cars there (Hyundai, BMW & Lexus). The staff is super friendly and incredibly honest which can be rare to find these days. For one instance, we noticed that our steering wheel was shaking when braking on our BMW and when we took it in for brake job the mechanic called us to check why we were having the brakes done because the pads looked new, we explained and he found that the rotors needed to be replaced, but instead of originally just doing work that didn't seem to need to be done, they called first! They were also over $200 cheaper than any other shop we called (Autoscandia and Sunset Hills Automotive). Hal & Bill are always a pleasure to work with, when problem is something they can't track down like on our Hyundai, instead of charging us for a fishing expedition, they referred us to dealer. We get all our oil changes, inspections, and maintenance done here and have no desire or need to go anywhere else. Appointments are flexible and easy to make and work is always done pretty quick.