What was the first convertible car?

There's no single definitive answer to what the very first convertible car was, as the concept evolved gradually. Early automobiles were often quite easily modified to be open-topped, and there wasn't a standardized "convertible" designation.

However, some contenders for early examples of cars that could be considered convertibles, in the sense of having a removable or folding top, include certain models from the late 19th and early 20th centuries. These were often custom modifications rather than factory-produced convertibles. Precise documentation from that era is often incomplete.