In 2013 Hunter-Reay drove for Level 5 Motorsports at the Mobil 1 12 Hours of Sebring in the #552 Siemens/Alpina Watches/Ohiya Casino Resort HPD ARX-03b-Honda HR28TT 2.8 L Turbo V6 with Scott Tucker and Simon Pagenaud. The car started in 8th place overall and in 2nd place in its class. The car completed 345 laps to finish in 7th place overall and in 2nd place in its class. Hunter-Reay finished 10th in the P2 drivers standings and Level 5 Motorsports won the P2 teams championship with 199 points.