Why is daihatsu not sold in the US?

Daihatsu, a subsidiary of Toyota, is not sold in the U.S. primarily due to the challenges of meeting stringent U.S. safety and emissions regulations, which can be costly for smaller manufacturers. Additionally, the market for subcompact cars, which is Daihatsu's specialty, is limited in the U.S., where consumers tend to prefer larger vehicles. As a result, Toyota has chosen to focus on its more established brands, such as Toyota and Lexus, rather than introducing Daihatsu to the American market.