SIA is involved in the investment and management of automotive related businesses throughout Australia, which includes the Fleet Leasing Company known as SALA.

SIA is a subsidiary of Sumitomo Corporation. SIA is owned 85% by Sumitomo Japan and 15% by Sumitomo Australia Ltd.

Sumitomo Corporation is a large Japanese multinational company with extensive motor industry experience.

Sumitomo Corporation not only conducts commodity transactions in all industries utilizing worldwide networks, but also provides related customers with various financing, serves as an organizer and a coordinator for various projects, and invests in businesses from the information industry to the retailing industry. Sumitomo Corporation thus shows great diversification as an Integrated Business Enterprise.

As at March 2010, Sumitomo had offices in over 90 countries and together with its consolidated subsidiaries and associated companies worldwide, it employed over 72,000 people.

Message from the President and CEO of Sumitomo Corporation


The Head Office of SIA is based at Rydalmere (Sydney).

The expertise and input provided by SIA to its businesses includes: -
  • Benchmarking and goal setting
  • Implementation and support of generic management policy based on proven business practices and precedent
  • Internal audits and problem identification
  • Trouble shooting and internal relief at a Management level
  • Implementation of quality systems to Australian and International standards
  • Monitoring and management of human resources and industrial relations issues
  • Monitoring overall industry trend and provide the latest marketing tools, assisting dealerships with advertising strategies and future business directions
  • I.T. support for Dealer Management System (DMS), PC's, network and all other I.T. areas.


SIA's hours of operation are 8.30am to 5.30pm Monday to Friday.

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