What I meant was the owner of the car, MY customer, needn't worry about
anything because our shop would make the car right for them
no matter what. What would end up happening with me, our parts supplier, or whatever would remain our business. The car's owner would not be troubled by that in the least.
This is the advantage of bringing your car to a reputable shop versus just some guy in his back yard doing this on the side as a hobby or whatever. Not trying to talk down to shadetree folks, lots and lots of good ones out there, but you (as a car owner) have to understand that there is some risk that YOU must assume yourself with that situation.
You cannot take your car to some guy on a weekend that spends his work days doing home appraisals or landscape design or whatever, and expect him to assume the same level of liability as you would at a shop like ours. So if you do-it-yourself, then YOU become that weekender shadetree guy, and that extra liability remains in YOUR hands.
This is also why a shop like ours charges more per hour, marks parts prices up a fair market amount, and can give some other services at the same time. Overhead needs to be paid for.
This website can be a double-edged sword. It can offer lots and lots of great real-world information to those who are seeking it, but can also give a false sense of security to others. Not everyone has the skills to install brakes, a timing belt, reseal an injection pump, etc. While I think VAG products are largely a breeze to service, it may not be that way for everyone....just like there is no way I'd ever be a ballet dancer!
This is why we get so many threads here that start out "Well, I started to do this but then this happened..." Or "How do I do this or that?". Because lots of people try to do things they probably shouldn't have.
Judging by this thread's original poster, and a couple of his other posts, he may just be one of those people.