All Car Brands Ranked from Worst to Best, DIY and car review with Scotty Kilmer. Worst car brands. Best car brands. Chevy, GM, Chrysler, Fiat, Honda, Toyota, Subaru, Mazda, Ford, I’ve finally ranked all the car companies. Worst cars to buy. Least reliable cars. Best cars to buy. Most reliable cars. Cars you should stay away from. Car brands to stay away from. Car Advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 51 years.