Dereck and his colleagues have worked on our family's Mercedes GLE and BMW X3, both of which are aging, and have been able to diagnose the root of the problems, source both new aftermarket and good used parts as appropriate, provide reliable estimates in advance and complete the work with reasonable labour costs. They are making it possible to keep our good older vehicles safely and comfortably on the road at a fraction of the cost that would be incurred at the dealers.