They were able to diagnose the problem, which turned out to be the front brakes, fix it at an affordable price (less than $200), and get my car back to me in a few hours. I couldn't be happier!
Update on 4/6/2015: These guys did fabulous work for me again! I took my car to Big O Tire for a cheap oil change. Upon getting my car, Big O told me that they may have to replace my oil pan for over $200. I didn't have them do any work and instead took the car to Japanese Car Service. They fixed the problem AND changed the oil for $35! I trust them fully and wish they did regular oil changes!!