Rules & Regulations

Group 3J – Improved Production Cars

Download the 2026 3J Technical Regs

Improved Production has been adopted by Motorsport Australia as a sporting-level touring car category. Motorsport Australia is ultimately responsible for the approval of the regulations or changes thereto, and responsible for publishing the regulations via the Motorsport Australia Manual and associated Bulletins as necessary. The Improved Production Racing Association of Australia (IPRA) is recognised by Motorsport Australia as the sole entity representing competitors in this category. The IPRA is the category representative group which is made up of a representative from each of the Motorsport Australia and IPRA-affiliated Improved Production state associations.

The IPRA is recognised by Motorsport Australia as the sole entity which may make recommendations regarding maintenance of and/or proposed changes to technical regulations for this category and/or sporting regulations for the conduct of competition activity for such vehicles.

Motorsport Australia will consult with the IPRA exclusively regarding the maintenance and/or proposed changes to the technical and sporting regulations.

The IPRA will be responsible for consultation processes within its membership and with other interested parties as may be appropriate from time to time.

Vehicles shall conform with the General Requirements of Automobiles as laid down in “General Requirements for Cars and Drivers” in the CAMS Manual of Motor Sport and these regulations.

Motorsport Australia offers a range of licences across all discipline areas starting at entry level through to international. To access any of the listed forms, refer to the forms list at the bottom of this page.

Due to a conflict between the IPRAA constitution and the 3J regulations we propose the change below:-

12.2  PUBLICATION DATE FOR AMENDMENTS

Each year in January at the latest, Motorsport Australia will publish all changes made to these regulations in the Motorsport Australia Manual.
Changes made for safety may come into force without notice.

Rule changes are affected by engaging with club members as per the individual Improved Production Racing Association of Australia Clubs constitutions, and a two-thirds majority of the Improved Production Racing Association of Australia(IPRAA) Executive Committee in accordance with the IPRAA constitution is required to effect a change