For 2012 Hunter-Reay drove at the Mobil 1 12 Hours of Sebring for Level 5 Motorsports in the #95 Siemens/Alpina Watches/Ohiya Casino Resort HPD ARX-03b-Honda HR28TT 2.8 L Turbo V6 with Scott Tucker and Luis Díaz in the P2 class. The car started in 18th place overall and in 3rd place in its class. The car retired after 85 laps and finished in 58th place overall and in 4th place in class. Hunter-Reay then competed in the season-ending Petit Le Mans for SRT Motorsports in the #91 Street & Racing Technology SRT Viper GTS-R-SRT 8.0 L V10 with Kuno Wittmer and Dominik Farnbacher in the GT class. The car started in 27th place overall and in 9th place in its class. The car completed 369 laps to finish in 20th place overall and in 8th place in its class. Hunter-Reay was unranked in the P2 driver's standings and finished 27th in the GT drivers standings with 7 points. SRT Motorsports finished 8th in the GT teams standings with 12 points and Level 5 Motorsports won the P2 teams championship with 203 points.