Since 2005 when I purchased my GTi new from Young we've been having that and our other 2 cars (wife's '04 Mazda 3 & son's '97 Miata, both purchased elsewhere) repaired there. Their service department and body shop work has been impressive.
Several things stand out, and there really aren't any weaknesses:
Generally, repairs are completed in a day; even if, as is often the case of necessity, I don't have an appointment and have left the car after closing.
I'll get a call late morning or early afternoon explaining what they found and what it's going to cost to repair. Also if there's anything their inspection found that needs attention--either immediately or in the future. If I miss the call and call back and need to leave a message I get a call back soon. Communication is excellent and if I ask a question I get a clear answer. There's never any rushing or putting me on hold.
The work has always been done properly.
The car is always left clean, the seat in the same position, radio station where it was, etc.
When my wife's Mazda 3 needed a new transmission Young found us a used replacement and saved us a lot of money.
Her car has been in a couple of accidents and needed significant body and mechanical work. After a couple of years it's still practically impossible to tell where the repairs were and which paint is new and which original. There was no overspray as far as I can tell. I've had a tour of the body shop and it was capable and clean. My questions, as with service, were answered in detail.
On a couple of occasions I've asked if something needed repair and they've checked and said no, or found what really was needed was much less expensive than what I had thought.
Besides service, I found their sales department to be low-pressure and would have no hesitation to purchase from them again.