Standings
GT Prototype Manufacturers Championship
| Pos | Teams | Points |
 US
|
US
|
US
|
US
|
US
|
US
|
 CA
|
US
|
US
|
US
|
US
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Porsche | 3129 | 380 | 380 | 382 | 382 | 330 | 328 | - | 310 | - | 312 | 325 |
| 2 | Honda | 3092 | 352 | 352 | 290 | 328 | 385 | 385 | - | 355 | - | 350 | 295 |
| 3 | Cadillac | 3069 | 308 | 328 | 328 | 310 | 348 | 352 | - | 328 | - | 385 | 382 |
| 4 | BMW | 2914 | 335 | 315 | 355 | 355 | 312 | 290 | - | 382 | - | 328 | 242 |
| 5 | Aston Martin | 2346 | - | 285 | 306 | 286 | 286 | 276 | - | 286 | - | 275 | 346 |
| 6 | Lamborghini | 1457 | 286 | 276 | - | - | - | 305 | - | - | - | 286 | 304 |
