https://yh-truck.com/car-carrier-trailer
The number of cars that can fit on a car carrier trailer, also known as a car hauler or car transporter, can vary based on the trailer's size and configuration. Car carrier trailers come in different sizes and designs, with various levels and decks to accommodate different numbers of vehicles.

In the United States, a standard car carrier trailer commonly used for long-distance transport typically has two levels or decks and can typically carry around 8 to 10 cars. These trailers are often used for moving new cars from manufacturing plants to dealerships.

However, there are various types of car carrier trailers, including single-level and multi-level versions, and some are customized to transport more or fewer cars depending on their design and purpose. Some car carriers are designed to carry only a few vehicles for local or specialized transport, while others may carry more than a dozen cars on a multi-level trailer.

The exact number of cars a car carrier trailer can transport depends on its specific design and configuration, and it can vary significantly.