The 2016 TreatMyClot.com 300 by Janessen was the fifth stock car race of the 2016 NASCAR Xfinity Series season and the 18th iteration of the event. The race was held on Saturday, March 19, 2016, in Fontana, California, at Auto Club Speedway, a 2 miles (3.2 km) permanent D-shaped oval racetrack. The race took the scheduled 150 laps to complete. In a wild finish, Austin Dillon, driving for Richard Childress Racing, would take advantage of both Daniel Suárez, who ran out of fuel on the final lap, and eventual second-place finisher Kyle Busch, who suffered a flat tire on the final lap. The win was Dillon's seventh career NASCAR Xfinity Series win and his first of the season. To fill out the podium, Bubba Wallace, driving for Roush Fenway Racing, would finish third.