The first concept car in the history of the auto industry was made by Mercedes

Explanation

The first concept car in history is widely considered to be the Buick Y-Job, introduced in 1938. Designed under legendary GM stylist Harley Earl, it pioneered features like hidden headlamps and an electric convertible roof. While some sources occasionally cite the Auburn Cabin Speedster (1929) as an earlier prototype used for publicity, the Buick Y-Job is the definitive answer credited with defining the modern concept car.