Unlike traditional automakers, which use independent dealers to sell and repair vehicles, Tesla sells directly to customers and owns and operates a large portion of its service centers. That gives the automaker extraordinarily detailed real-time visibility into parts failures, repairs and warranty claims, which Tesla engineers meticulously tracked and analyzed for years, the company records show.

See, this is where having monopoly control over the sales and repair of Tesla's own cars could help them improve their product and supplh chain, be truthful and give refunds to people with defective parts, and build good rapport as a brand. Instead they collect all that data just to deny any problems and hide them from customers and regulators.