The 1972 Australian Manufacturers' Championship was a CAMS sanctioned national motor racing title for car manufacturers. It was contested over a five round series.
All rounds were open only to Group E Series Production Touring Cars. Entries were divided into four classes, split via "CP Units", where the engine capacity of the vehicle (in litres) was multiplied by the retail price of the vehicle (in dollars) to give a CP (Capacity Price) Units value for each model.
For each round other than Bathurst, championship points were awarded 9,8,7,6,5,4,3,2,1 in each class with bonus points awarded for outright placings on a 4,3,2,1 basis. For the Bathurst round, points were awarded 18,16,14,12,10,8,6,4,2 in each class with bonus points awarded for outright placings on a 4,3,2,1 basis.
Championship results were as follows.
| Position | Manufacturer | Class | Car | Rd1 | Rd2 | Rd3 | Rd4 | Rd5 | Points |
| 1 | Ford | D | Ford Falcon XY GTHO | 10 | 13 | 21 | 13 | 13 | 70 |
| 2 | Holden | C | Holden Torana LJ GTR XU-1 | 13 | 10 | 22 | 12 | 12 | 69 |
| 3 | Ford | B | Ford Escort Twin Cam & Ford Escort GT1600 | 9 | 9 | 18 | 9 | 9 | 54 |
| 4 | Mazda | A | Mazda 1300 | 9 | 9 | 16 | 9 | 9 | 52 |
| 5 | Chrysler | D | Chrysler Valiant Charger R/T E49 | 8 | - | 18 | 7 | 6 | 39 |
| Datsun | A | Datsun 1200 | 8 | 7 | 18 | ? | ? | 39 | |
| 7 | Mazda | B | Mazda Capella RE | - | ? | 16 | ? | ? | 29 |
| 8 | Alfa Romeo | C | Alfa Romeo 1750 GTV | 5 | ? | 10 | ? | ? | 18 |
| 9 | Chrysler | C | Chrysler Valiant Charger R/T E38 | - | - | 12 | - | - | 12 |
| 10 | Fiat | B | Fiat 124 Sport | - | - | 6 | - | - | 6 |
| 11 | Chrysler | A | Chrysler Valiant Galant | 5 | - | - | - | - | 5 |
| Morris | B | Morris Cooper S | - | ? | - | ? | ? | 5 | |
| 13 | Holden | B | Holden Torana LC GTR | - | - | 2 | - | - | 2 |