Golden West Automotive will close at the end of October as it is no longer "financially viable to continue", says dealer principal Michael Adams.
The announcement was made in a post on the Golden West Automotive Facebook page on Monday evening by Mr Adams.
"Due to circumstances beyond my control, namely the withdrawal of General Motors Holden from the Australian market, changes being introduced by Honda to the dealer arrangement and the ongoing affects of the COVID-19 crisis, I find myself in a position that it is not financially viable to continue to trade," Mr Adams said.
"Consequently, I have been forced into a position that the only option available to me, regrettably, is to close Golden West Automotive effective on the 31st October 2020."
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However, the principal dealer said he was currently "in talks with interested parties to take over the service and parts operation".
Mr Adams said it was a voluntary decision and all staff entitlements and creditors would be paid in full.
He thanked the staff for their efforts over the last 20 years and the customers who supported the business.
Golden West Automotive employs almost 40 staff who work across three manufacturers at the site - Holden, Renault and Honda - along with an auto paint centre.
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