John Harris and crew, the entire 40 west crew are the best you'll find in Frederick, probably the best in Maryland. The shop is clean, the service and quality of work is top notch. I've been taking my vehicles here since 2004 and I'm extremely picky about who works on my cars. With this shop, you'll have a two-way conversation, John listens to his customers and he truly advises you on what needs and doesn't need to get done. They also offer a no questions asked shuttle service which makes the process so much easier. I am 100% pleased each time I pick up my car and they are the "the one & only" shop that I trust. You should strongly consider switching mechanics or ditching the dealer for 40 West Auto Care, they are the best in Maryland.