Serugga Timothy Bukenya, trading as T.I.M Automotive Services, was convicted in the Joondalup Magistrates Court on June 19 of working in spite of his licence expiring.
He was required to pay $4783 in costs.
The court heard Bukenya had applied for a licence renewal in 2013 but was required to submit further information.
He did not comply with demands asking him to do so.
Consumer Protection acting commissioner David Hillyard said it was imperative for renewal applications to be completed properly.
�Licence renewals are not automatic and applicants need to show that they comply with the criteria that allow them to be licenced,� he said.
�Operating without a current licence is a clear breach of the law and, as in this case, can have expensive consequences.�
Motorists can check their mechanic�s credentials at www.commerce.wa.gov.au/ consumerprotection/licence-search.