They ship
millions of janky cars.
https://www.teslarati.com/tesla-placed-bottom-consumer-repor...
> Consumer Reports‘ annual reliability rankings have been released, and with data from 24 brands and over 300,000 vehicles, Tesla fell near the bottom (19/24) along with Mercedes-Benz, Jeep, Volkswagen, GMC, and Chevrolet. Electric vehicles overall also placed poorly, being the second least reliable category of vehicles. Hybrids/plugin hybrids, especially those from Toyota, were found to be the most reliable.
Also the idea of the “best selling car” is meaningless. That’s like when Apple has “the best selling phone” when other manufacturers like Samsung sell a dozen types of phones.