The 2015 Auto Club 400 was a NASCAR Sprint Cup Series race held on March 22, 2015, at Auto Club Speedway in Fontana, California. Contested over 209 laps – extended from 200 laps, due to a green–white–checker finish – on the 2 miles (3.2 km) D-shaped oval, it was the fifth race of the 2015 NASCAR Sprint Cup Series season. Brad Keselowski won the race – his 17th career victory – while Kevin Harvick extended his top two finish streak to eight races with a runner-up finish. Kurt Busch, Paul Menard and Ryan Newman rounded out the top five.