We have been headed all the way to GT for some great service and repair services. We have had our Mercedes, Fords and Chyslers all serviced by Auto-Spec over the last 4 years. One instance that stands out was work done on our GLK350 from Mercedes with less than 60K miles on it. Just as the warranty expired, there was an increased noise coming from the rear of the car when accelerating. Our first stop was at Mercedes of GT where we found out the warranty lapsed a few months back, so the total bill was not covered. So with parts and labor, this would be out of pocket in the 3500-4000 dollar range, it was a rear end bearing issue and the entire back driveline and parts were to be removed. We took it to John and his team and came back with a few alternatives. One is the part source by Mercedes and installed by his team. This is normally how it works with parts being OEM but the labor rates are much better NOT going to the Benz shop. The second alternative was to source a complete rear axle and assembly out of state (used) but only a few thousand miles on the drivetrain. Needless to say, we opted for the out of state option and close to new part put on the SUV. Only took one day after the part came in and the work was completed. Guess what? Even as new the GLK was never that quiet, so it seems like the original part was not a manufactured right resulting in a huge cost to replace. Best of all, saved a ton of money by having alternatives to work with. Will continue to have all my cars serviced there or in the other location in Round Rock for convenience. Trusted advisors for all of my car needs-