Standings
GT Prototype Manufacturers Championship
| Pos | Teams | Points |
 US
|
US
|
US
|
US
|
US
|
US
|
 CA
|
US
|
US
|
US
|
US
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Cadillac | 3196 | 340 | 335 | 348 | 352 | 385 | 385 | - | 374 | - | 352 | 325 |
| 2 | Porsche | 3096 | 380 | 375 | 323 | 370 | 283 | 326 | - | 340 | - | 323 | 376 |
| 3 | BMW | 2856 | 323 | 283 | 285 | 321 | 348 | 305 | - | 261 | - | 380 | 350 |
| 4 | Honda | 2851 | 295 | 312 | 385 | 306 | 310 | 348 | - | 315 | - | 295 | 285 |
| 5 | Aston Martin | 2242 | 231 | 241 | 244 | 255 | 232 | 222 | - | 283 | - | 251 | 283 |
