The 1989 Australian Manufacturers' Championship was a CAMS sanctioned motor racing title for vehicle manufacturers.
[1] It was contested concurrently with the 1989 Australian Touring Car Championship over an eight round series with each round staged as a single race of approximately one hour's duration.
[2] The series was open to Touring Cars complying with CAMS Group 3A regulations, commonly referred to as Group A Touring Cars.
[2] Cars competed in three engine capacity classes: Points were awarded on a 9-6-4-3-2-1 basis to the top six finishers in each class at each round however only the highest scoring car of each make at each round could earn points.
[2] Note: Only half points were awarded for Round 3 at Lakeside as the initial race was stopped due to an accident and the duration of the restarted race was reduced to 30 minutes.