| 8.2.2013 | Sebring Test | 7 | #1 | Mitchell / Ducote | BAR 1 Motorsports | 4th |
| 8.2.2013 | Sebring Test | 8 | #35 | Marcelli / Cumming / Johansson | BAR 1 Motorsports | 2nd |
| 8.2.2013 | Sebring Test | 18 | #4 | Shears / Nunez | Performance Tech | 3rd |
| 16.3.2013 | 12 h Sebring | 05 | #20 | Bennett / Braun / Wilkins | Core Autosport | 14th |
| 16.3.2013 | 12 h Sebring | 7 | #1 | Mitchell / Drissi / Ducote | BAR1 Motorsports | 21st |
| 16.3.2013 | 12 h Sebring | 8 | #35 | Marcelli / Cumming / Johansson | BAR1 Motorsports | 10th |
| 16.3.2013 | 12 h Sebring | 9 | #15 | Popow / Junqueira / Ende | RSR Racing | 12th |
| 16.3.2013 | 12 h Sebring | 52 | #21 | Ostella / Cheng / Guasch | PR1 Mathiasen Motorsports | 9th |
| 16.3.2013 | 12 h Sebring | 81 | #25 | Kaffer / Schultis / Simon | DragonSpeed Mishumotors | 36th |
| 16.3.2013 | 12 h Sebring | 500 | #4 | Nunez / Shears / Heinemeier Hansson | Performance Tech Motorsports | 11th |
| 27.3.2013 | ELMS Test Paul Ricard | 46 | | Munemann / Kressner / Catsburg | Algarve Pro Racing Team | 10th |
| 27.3.2013 | ELMS Test Paul Ricard | 47 | #10 | Loan / Lecuyer / Loup-Chatin / Hirsch | Team Endurance Challenge | 8th |
| 27.3.2013 | ELMS Test Paul Ricard | 48 | #22 | Pons / Ayari / Hirsch | Team Endurance Challenge | 9th |
| 27.3.2013 | ELMS Test Paul Ricard | 49 | #38 | | Team Endurance Challenge | DNA |
| 13.4.2013 | 3 h Silverstone | 47 | #10 | Loan / Lecuyer | Team Endurance Challenge | DNS |
| 13.4.2013 | 3 h Silverstone | 48 | #22 | Pons / Ayari | Team Endurance Challenge | 9th |
| 13.4.2013 | 3 h Silverstone | 49 | #38 | Chatin / Hirsch | Team Endurance Challenge | 19th |
| 20.4.2013 | 2 h Long Beach | 05 | #20 | Bennett / Braun | Core Autosport | 3rd |
| 20.4.2013 | 2 h Long Beach | 7 | #1 | Drissi / Mitchell | BAR1 Motorsports | 17th |
| 20.4.2013 | 2 h Long Beach | 8 | #35 | Cumming / Marcelli | BAR1 Motorsports | 25th |
| 20.4.2013 | 2 h Long Beach | 9 | #15 | Ende / Junqueira | RSR Racing | 5th |
| 20.4.2013 | 2 h Long Beach | 18 | #4 | Shears / Nunez | Performance Tech Motorsports | 18th |
| 20.4.2013 | 2 h Long Beach | 52 | #21 | Guasch / Diaz | PR1 Mathiasen Motorsports | 4th |
| 20.4.2013 | 2 h Long Beach | 81 | #25 | Kaffer / Schultis / Simon | DragonSpeed Motorsports | unused |
| 11.5.2013 | 4 h Laguna Seca | 05 | #20 | Bennett / Braun | Core Autosport | 6th |
| 11.5.2013 | 4 h Laguna Seca | 7 | #1 | Drissi / Mitchell | BAR1 Motorsports | 17th |
| 11.5.2013 | 4 h Laguna Seca | 8 | #35 | Cumming / Marcelli | BAR1 Motorsports | 8th |
| 11.5.2013 | 4 h Laguna Seca | 9 | #15 | Ende / Junqueira | RSR Racing | 29th |
| 11.5.2013 | 4 h Laguna Seca | 18 | #4 | Shears / Nunez | Performance Tech Motorsports | 7th |
| 11.5.2013 | 4 h Laguna Seca | 52 | #21 | Guasch / Diaz | PR1 Mathiasen Motorsports | 5th |
| 11.5.2013 | 4 h Laguna Seca | 81 | #25 | van der Zande / Schultis | 8Star Mishumotors | 14th |
| 18.5.2013 | 3 h Imola | 47 | #10 | Loan / Lecuyer | Team Endurance Challenge | 10th |
| 18.5.2013 | 3 h Imola | 48 | #22 | Pons / Ayari | Team Endurance Challenge | 9th |
| 18.5.2013 | 3 h Imola | 49 | #38 | Chatin / Hirsch | Team Endurance Challenge | 7th |
| 9.6.2013 | Le Mans Test | 85 | #10 | Loan / Moorthy / Lecuyer / Pons | Team Endurance Challenge | 44th |
| 9.6.2013 | Le Mans Test | 86 | #22 | Loan / Moorthy / Lecuyer / Pons | Team Endurance Challenge | 43rd |
| 6.7.2013 | 2 h 45 min Lime Rock | 05 | #20 | Bennett / Braun | Core Autosport | 6th |
| 6.7.2013 | 2 h 45 min Lime Rock | 7 | #1 | Drissi / Mitchell | BAR1 Motorsports | 19th |
| 6.7.2013 | 2 h 45 min Lime Rock | 8 | #35 | Marcelli / Cumming | BAR1 Motorsports | 10th |
| 6.7.2013 | 2 h 45 min Lime Rock | 9 | #15 | Ende / Junqueira | RSR Racing | 5th |
| 6.7.2013 | 2 h 45 min Lime Rock | 18 | #4 | Nunez / Booth | Performance Tech Motorsports | 8th |
| 6.7.2013 | 2 h 45 min Lime Rock | 52 | #21 | Guasch / Cheng | PR1 Mathiasen Motorsports | 12th |
| 6.7.2013 | 2 h 45 min Lime Rock | 81 | #25 | van der Zande / Schultis | 8Star Mishumotors | 11th |
| 20.7.2013 | 3 h Red Bull Ring | 46 | #33 | Jones / Catsburg | Algarve Pro Racing Team | 9th |
| 20.7.2013 | 3 h Red Bull Ring | 47 | #10 | Verdonck / Loan | Team Endurance Challenge | 8th |
| 20.7.2013 | 3 h Red Bull Ring | 48 | #22 | Ayari / Pons | Team Endurance Challenge | 14th |
| 20.7.2013 | 3 h Red Bull Ring | 49 | #38 | Chatin / Hirsch | Team Endurance Challenge | 7th |
| 21.7.2013 | 2 h 45 min Mosport | 05 | #20 | Bennett / Braun | Core Autosport | 7th |
| 21.7.2013 | 2 h 45 min Mosport | 7 | #1 | Drissi / Mitchell | BAR1 Motorsports | 31st |
| 21.7.2013 | 2 h 45 min Mosport | 8 | #35 | Cumming / Marcelli | BAR1 Motorsports | 9th |
| 21.7.2013 | 2 h 45 min Mosport | 9 | #15 | Ende / Junqueira | RSR Racing | 21st |
| 21.7.2013 | 2 h 45 min Mosport | 18 | #4 | Shears / Nunez | Performance Tech Motorsports | 29th |
| 21.7.2013 | 2 h 45 min Mosport | 52 | #21 | Cheng / Guasch | PR1 Mathiasen Motorsports | 10th |
| 21.7.2013 | 2 h 45 min Mosport | 81 | #24 | van der Zande / Schultis | 8Star Mishumotors | 8th |
| 11.8.2013 | 2 h 45 min Road America | 05 | #20 | Bennett / Braun | Core Autosport | 10th |
| 11.8.2013 | 2 h 45 min Road America | 7 | #1 | French / Mitchell | BAR1 Motorsports | 13th |
| 11.8.2013 | 2 h 45 min Road America | 8 | #35 | Cumming / Marcelli | BAR1 Motorsports | 4th |
| 11.8.2013 | 2 h 45 min Road America | 9 | #15 | Ende / Junqueira | RSR Racing | 3rd |
| 11.8.2013 | 2 h 45 min Road America | 18 | #4 | Nunez / Shears | Performance Tech Motorsports | 11th |
| 11.8.2013 | 2 h 45 min Road America | 52 | #21 | Cheng / Guasch | PR1 Mathiasen Motorsports | 9th |
| 11.8.2013 | 2 h 45 min Road America | 81 | #24 | van der Zande / Schultis | DragonSpeed | 12th |
| 31.8.2013 | 2 h Baltimore | 05 | #20 | Bennett / Braun | Core Autosport | 12th |
| 31.8.2013 | 2 h Baltimore | 7 | #1 | Mitchell / Drissi | BAR1 Motorsports | DNS |
| 31.8.2013 | 2 h Baltimore | 8 | #35 | Marcelli / Cumming | BAR1 Motorsports | 26th |
| 31.8.2013 | 2 h Baltimore | 9 | #15 | Popow / Junqueira | RSR Racing | 22nd |
| 31.8.2013 | 2 h Baltimore | 18 | #4 | Shears / Nunez | Performance Tech Motorsports | 10th |
| 31.8.2013 | 2 h Baltimore | 52 | #21 | Guasch / Cameron | PR1 Mathiasen Motorsports | 19th |
| 31.8.2013 | 2 h Baltimore | 81 | #24 | van der Zande / Schultis | DragonSpeed | DNA |
| 14.9.2013 | 3 h Hungaroring | 46 | #33 | Jones / Catsburg | Algarve Pro Racing Team | NC |
| 14.9.2013 | 3 h Hungaroring | 48 | #22 | Ayari / Pons | Team Endurance Challenge | 19th |
| 14.9.2013 | 3 h Hungaroring | 49 | #38 | Hirsch / Chatin | Team Endurance Challenge | 8th |
| 21.9.2013 | 2 h 45 min Austin | 05 | #20 | Bennett / Kimber-Smith | Core Autosport | 9th |
| 21.9.2013 | 2 h 45 min Austin | 5 | #15 | Dalziel / Pew | Starworks Motorsport | 32nd |
| 21.9.2013 | 2 h 45 min Austin | 7 | #1 | Drissi / Mitchell | BAR1 Motorsports | 28th |
| 21.9.2013 | 2 h 45 min Austin | 8 | #35 | Cumming / Marcelli | BAR1 Motorsports | 7th |
| 21.9.2013 | 2 h 45 min Austin | 9 | #34 | Heinemeier Hansson / Junqueira | RSR Racing | 12th |
| 21.9.2013 | 2 h 45 min Austin | 18 | #4 | Shears / Nunez | Performance Tech Motorsports | 10th |
| 21.9.2013 | 2 h 45 min Austin | 52 | #21 | Cameron / Guasch | PR1 Mathiasen Motorsports | 8th |
| 21.9.2013 | 2 h 45 min Austin | 81 | #24 or 25 | van der Zande / Schultis | DragonSpeed | 11th |
| 28.9.2013 | 3 h Paul Ricard | 48 | | Pons / Ayari | Team Endurance Challenge | 8th |
| 28.9.2013 | 3 h Paul Ricard | 49 | | Chatin / Hirsch | Team Endurance Challenge | 21st |
| 5.10.2013 | 2 h 45 min Virginia | 05 | #20 | Bennett / Kimber-Smith | Core Autosport | 7th |
| 5.10.2013 | 2 h 45 min Virginia | 5 | #15 | Dalziel / Pew | Starworks Motorsport | DNA |
| 5.10.2013 | 2 h 45 min Virginia | 7 | #1 | Mitchell / French | BAR1 Motorsports | 8th |
| 5.10.2013 | 2 h 45 min Virginia | 8 | #35 | Marcelli / Cumming | BAR1 Motorsports | 6th |
| 5.10.2013 | 2 h 45 min Virginia | 9 | #34 | Ende / Junqueira | RSR Racing | DNA |
| 5.10.2013 | 2 h 45 min Virginia | 18 | #4 | Nunez / Booth | Performance Tech Motorsports | 25th |
| 5.10.2013 | 2 h 45 min Virginia | 52 | #21 | Guasch / Cameron | PR1 Mathiasen Motorsports | 26th |
| 5.10.2013 | 2 h 45 min Virginia | 81 | #24 | van der Zande / Schultis | DragonSpeed | 27th |
| 19.10.2013 | Petit Le Mans | 05 | #20 | Bennett / Kimber-Smith / Wilkins | Core Autosport | 7th |
| 19.10.2013 | Petit Le Mans | 5 | #15 | Dalziel / Pew | Starworks Motorsport | DNA |
| 19.10.2013 | Petit Le Mans | 7 | #1 | Mitchell / Drissi / French | BAR1 Motorsports | 20th |
| 19.10.2013 | Petit Le Mans | 8 | #35 | Cumming / Marcelli / Johansson | BAR1 Motorsports | 5th |
| 19.10.2013 | Petit Le Mans | 9 | #34 | Ende / Junqueira / Menezes | RSR Racing | 29th |
| 19.10.2013 | Petit Le Mans | 18 | #4 | Nunez / Shears | Performance Tech Motorsports | 33rd |
| 19.10.2013 | Petit Le Mans | 25 | #37 | Rayhall / Negri | 8Star Motorsports | 6th |
| 19.10.2013 | Petit Le Mans | 52 | #21 | Cameron / Guasch / Cheng | PR1 Mathiasen Motorsports | 21st |
| 17.11.2013 | Sebring November Test | 12 | #19 | Heitkotter / Doherty | Pickett Racing | 5th |
| 20.11.2013 | Daytona November Test | 05 | #20 | Bennett / Braun | Core Autosport | 12th |