No, 'Grishnakh was right. You have no idea what you're talking about. If a particular repair is under warranty, then sure, one gets it fixed at the dealer. Otherwise, especially for a "major" repair, why pay 40% more for a mechanic: with decades less experience, who doesn't have an interest in the business, who won't speak to the customer, and who will be replaced by somebody else when the customer needs another repair next year?