The T4 Series featured the largest grid in Mexican motor sports, with more than 30 teams running full-time and a few others doing a limited schedule. It is also notorious for the diversity of its drivers. As the series allows drivers to debut at age 15, several young Mexican talents are choosing the T4 Series to start their NASCAR careers. On the other hand, there are several 40-something drivers who have been racing in the series since it began in 1994.