I've used KTAS Castle Hill for a number of years now, especially for servicing once my cars are out of dealer warranty. The first time I used them was to change my brakes pad and disc-machining (after the Nissan dealer told me they needed doing). I took my car in, told them I couldn't remember if it was front or back brakes. An hour later, they called me and said that both front and back brakes were good for at least another 10-15,000km so no need to change them now. Total cost was $0. After being so ethical/honest on my first visit, I've continue to use them for services, brakes, electrical faults and battery changes. I have always been happy with the service. Even when they have seemed expensive, on phoning around, they're generally still one of the cheapest (if not the cheapest). I've also found it convenient to use them because you can leave your car there for a few hours and head upstairs for shopping etc. Highly recommend.