The Brabham BT19 is a Formula One racing car designed by Jack Brabham and Ron Tauranac for the 1966 season. It is notable for being the first car to win a World Championship using a flat-12 engine, which provided a balance of power and weight. The BT19 was driven by Brabham himself, who won the 1966 World Championship with it. The car features a lightweight aluminum chassis and innovative aerodynamics for its time. Its design contributed to the evolution of Formula One cars, influencing future models. The Brabham BT19 remains a significant part of racing history, showcasing engineering advancements in motorsport.