What year were the first cars produced in a factory?

While there's no single definitive answer, as the definition of "car" and "factory production" can be debated, 1893 is often cited as the year the first cars were produced on a significant scale using assembly-line techniques. This is associated with the Duryea Motor Wagon Company in the United States. Other companies were producing cars earlier, but on a much smaller, less standardized scale.