| 11.1.2015 | Daytona Test | 57 | #OR02-04 | Krohn / Pla / Jönsson / Brundle | Krohn Racing | 10th |
| 11.1.2015 | Daytona Test | 60 | #OR02-03 | McMurry / Pew | Michael Shank Racing w/Curb/Agajanian | 3rd |
| 25.1.2015 | 24 h Daytona | 57 | #OR02-04 | Pla / Krohn / Jönsson / Brundle | Krohn Racing | 49th |
| 25.1.2015 | 24 h Daytona | 60 | #OR02-03 | Negri / McMurry / Pew / Allmendinger | Michael Shank Racing w/ Curb/Agajanian | 9th |
| 21.3.2015 | 12 h Sebring | 57 | #OR02-04 | Pla / Krohn / Jönsson | Krohn Racing | 8th |
| 21.3.2015 | 12 h Sebring | 60 | #OR02-03 | Negri / Pew / Wilson | Michael Shank Racing with Curb/Agajanian | 42nd |
| 24.3.2015 | ELMS Test Paul Ricard | 25 | | Winslow / Roda / Gonzalez | Algarve Pro Racing | 8th |
| 24.3.2015 | ELMS Test Paul Ricard | 40 | #OR02-04 | Krohn / Jönsson | Krohn Racing | 10th |
| 28.3.2015 | WEC Test Paul Ricard | 26 | | Rusinov / Canal / Bird | G-Drive Racing | 9th |
| 28.3.2015 | WEC Test Paul Ricard | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 14th |
| 28.3.2015 | WEC Test Paul Ricard | 35 | #OR02-10 | Nicolet / Merlin / Maris | OAK Racing | 15th |
| 11.4.2015 | 4 h Silverstone | 25 | #OR02-02 | Nicky Catsburg | Algarve Pro Racing | DNA |
| 11.4.2015 | 4 h Silverstone | 40 | #OR02-04 | Negri / Krohn / Jönsson | Krohn Racing | 4th |
| 12.4.2015 | 6 h Silverstone | 26 | | Rusinov / Canal / Bird | G-Drive Racing | 6th |
| 12.4.2015 | 6 h Silverstone | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 7th |
| 12.4.2015 | 6 h Silverstone | 35 | #OR02-10 | Nicolet / Merlin / Maris | OAK Racing | 22nd |
| 18.4.2015 | 100 min Long Beach [P/GTLM] | 60 | #OR02-03 | Pew / Negri | Michael Shank Racing with Curb/Agajanian | 6th |
| 2.5.2015 | 6 h Spa | 26 | #OR02-07 | Rusinov / Canal / Bird | G-Drive Racing | 31st |
| 2.5.2015 | 6 h Spa | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 10th |
| 2.5.2015 | 6 h Spa | 30 | #OR02-08 | Sharp / Dalziel / Heinemeier Hansson | Extreme Speed Motorsports | 30th |
| 2.5.2015 | 6 h Spa | 31 | #OR02-06 | Brown / Fogarty / Van Overbeek | Extreme Speed Motorsports | 23rd |
| 2.5.2015 | 6 h Spa | 35 | #OR02-10 | Nicolet / Merlin / Maris | OAK Racing | 15th |
| 3.5.2015 | 2 h Laguna Seca | 60 | #OR02-03 | Pew / Negri | Michael Shank Racing with Curb/Agajanian | 3rd |
| 17.5.2015 | 4 h Imola | 40 | #OR02-04 | Krohn / Jönsson / Negri | Krohn Racing | 5th |
| 30.5.2015 | 100 min Detroit | 60 | #OR02-03 | Pew / Negri | Michael Shank Racing with Curb/Agajanian | 2nd |
| 31.5.2015 | Le Mans Test | 26 | #OR02-07 | Rusinov / Canal / Bird | G-Drive Racing | 21st |
| 31.5.2015 | Le Mans Test | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 23rd |
| 31.5.2015 | Le Mans Test | 30 | | Sharp / Dalziel / Heinemeier Hansson | Extreme Speed Motorsports | 28th |
| 31.5.2015 | Le Mans Test | 31 | #OR02-06 | Brown / Van Overbeek / Fogarty | Extreme Speed Motorsports | 30th |
| 31.5.2015 | Le Mans Test | 34 | #OR02-09 | Cumming / Vanthoor | OAK Racing | 11th |
| 31.5.2015 | Le Mans Test | 35 | #OR02-10 | Nicolet / Merlin / Maris | OAK Racing | 31st |
| 31.5.2015 | Le Mans Test | 40 | #OR02-04 | Krohn / Jönsson | Krohn Racing | 26th |
| 14.6.2015 | 24 h Le Mans | 26 | #OR02-07 | Rusinov / Canal / Bird | G-Drive Racing | 11th |
| 14.6.2015 | 24 h Le Mans | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 12th |
| 14.6.2015 | 24 h Le Mans | 30 | #OR02-08 | Sharp / Dalziel / Heinemeier Hansson | Extreme Speed Motorsports | 28th |
| 14.6.2015 | 24 h Le Mans | 31 | #OR02-06 | Brown / Van Overbeek / Fogarty | Extreme Speed Motorsports | 15th |
| 14.6.2015 | 24 h Le Mans | 34 | #OR02-09 | Cumming / Vanthoor / Estre | OAK Racing | DNF |
| 14.6.2015 | 24 h Le Mans | 35 | #OR02-10 | Nicolet / Merlin / Maris | OAK Racing | 29th |
| 14.6.2015 | 24 h Le Mans | 40 | #OR02-04 | Krohn / Jönsson / Barbosa | Krohn Racing | 32nd |
| 28.6.2015 | 6 h Watkins Glen | 60 | #OR02-03 | Negri / Pew | Michael Shank Racing with Curb/Agajanian | 32nd |
| 12.7.2015 | 4 h Red Bull Ring | 25 | #OR02-02 | Munemann / Winslow / Roda | Algarve Pro Racing | 15th |
| 12.7.2015 | 4 h Red Bull Ring | 40 | #OR02-04 | Krohn / Jönsson / Canal | Krohn Racing | 5th |
| 12.7.2015 | 2 h 40 min Mosport [P/PC/GTLM] | 60 | #OR02-03 | Pew / Negri | Michael Shank Racing with Curb/Agajanian | 3rd |
| 9.8.2015 | 2 h 40 min Road America | 60 | #OR02-03 | Pew / Negri | Michael Shank Racing with Curb/Agajanian | 4th |
| 30.8.2015 | 6 h Nürburgring | 26 | #OR02-07 | Rusinov / Canal / Bird | G-Drive Racing | 8th |
| 30.8.2015 | 6 h Nürburgring | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 9th |
| 30.8.2015 | 6 h Nürburgring | 30 | #OR02-08 | Sharp / Dalziel / Heinemeier Hansson | Extreme Speed Motorsports | 12th |
| 30.8.2015 | 6 h Nürburgring | 31 | #OR02-06 | Brown / Van Overbeek / Fogarty | Extreme Speed Motorsports | 14th |
| 30.8.2015 | 6 h Nürburgring | 35 | #OR02-10 | Nicolet / Merlin / Maris | OAK Racing | DNA |
| 6.9.2015 | 4 h Paul Ricard | 25 | | Munemann / Winslow / Roda | Algarve Pro Racing | 8th |
| 6.9.2015 | 4 h Paul Ricard | 40 | #OR02-04 | Krohn / Jönsson / Pla | Krohn Racing | 5th |
| 19.9.2015 | 6 h Austin | 26 | | Rusinov / Canal / Bird | G-Drive Racing | 5th |
| 19.9.2015 | 6 h Austin | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 7th |
| 19.9.2015 | 6 h Austin | 30 | | Sharp / Dalziel / Heinemeier Hansson | Extreme Speed Motorsports | 9th |
| 19.9.2015 | 6 h Austin | 31 | | Brown / Van Overbeek / Fogarty | Extreme Speed Motorsports | DNF |
| 19.9.2015 | 2 h 40 min Austin | 60 | #OR02-03 | Negri / Pew | Michael Shank Racing with Curb/Agajanian | 4th |
| 3.10.2015 | Petit Le Mans | 60 | #OR02-03 | McMurry / Pew / Negri | Michael Shank Racing with Curb/Agajanian | 35th |
| 11.10.2015 | 6 h Fuji | 26 | | Rusinov / Canal / Bird | G-Drive Racing | 9th |
| 11.10.2015 | 6 h Fuji | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | 11th |
| 11.10.2015 | 6 h Fuji | 30 | | Sharp / Dalziel / Heinemeier Hansson | Extreme Speed Motorsports | 12th |
| 11.10.2015 | 6 h Fuji | 31 | | Brown / Van Overbeek / Fogarty | Extreme Speed Motorsports | 25th |
| 18.10.2015 | 4 h Estoril | 25 | | Munemann / Winslow / Roda | Algarve Pro Racing | 7th |
| 18.10.2015 | 4 h Estoril | 40 | #OR02-04 | Krohn / Jönsson / Pla | Krohn Racing | 8th |
| 1.11.2015 | 6 h Shanghai | 26 | | Rusinov / Canal / Bird | G-Drive Racing | 10th |
| 1.11.2015 | 6 h Shanghai | 28 | #OR02-05 | Yacaman / Derani / Gonzalez | G-Drive Racing | DNF |
| 1.11.2015 | 6 h Shanghai | 30 | | Sharp / Dalziel / Heinemeier Hansson | Extreme Speed Motorsports | DNF |
| 1.11.2015 | 6 h Shanghai | 31 | | Brown / Van Overbeek / Fogarty | Extreme Speed Motorsports | 20th |
| 8.11.2015 | 3 h Malaysia | 25 | | Munemann / Koutsoumidis / Winslow | Algarve Pro Racing | 2nd |
| 18.11.2015 | Daytona November Test | 60 | #OR02-03 | Pew / Negri / Allmendinger | Michael Shank Racing | raced |
| 21.11.2015 | 6 h Bahrain | 26 | | Bird / Rusinov / Canal | G-Drive Racing | 7th |
| 21.11.2015 | 6 h Bahrain | 28 | #OR02-05 | Derani / Yacaman / Gonzalez | G-Drive Racing | 9th |
| 21.11.2015 | 6 h Bahrain | 30 | | Dalziel / Sharp / Heinemeier Hansson | Extreme Speed Motorsports | 17th |
| 21.11.2015 | 6 h Bahrain | 31 | | Van Overbeek / Brown / Fogarty | Extreme Speed Motorsports | 20th |