The first year of the Harley-Davidson Sportster was 1957. The Sportster model was introduced by Harley-Davidson as a lightweight motorcycle with a smaller engine compared to their other models at the time. It quickly gained popularity and became one of Harley-Davidson's most iconic and enduring models. Over the years, the Sportster has undergone various updates and changes, but its distinct style and performance have remained a key feature of the model.