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“The afternoon invoicing batch used to take two of us two hours. Now it's done before lunch, the numbers are right the first time, and I have not had to chase a missing job card in three months.”
Brad Simmons
Owner–Operator, Sydney Auto Centre
Sydney Auto Centre
Parramatta, NSW
47%
Reduction in admin time
$12k
Additional monthly revenue
72
Net Promoter Score
The challenge
Sydney Auto Centre had been trading out of Parramatta for eleven years when Brad Simmons decided the paper job card system had finally run its course. Technicians wrote job notes by hand; an admin team member transcribed them each afternoon into a spreadsheet; invoices were manually generated and emailed as PDFs. The process worked — just not well.
Errors crept in at every handoff. A technician's shorthand became an incorrect part description on the invoice. A quoted labour hour disappeared between the whiteboard and the spreadsheet. By the time a customer dispute arose, the original job card was buried in a folder from three weeks ago. Brad estimated the team was losing two to three hours per week just correcting avoidable mistakes.
The shop was also leaving revenue on the table. Deferred work — tyre wear noted during an oil service, a brake pad observation flagged but not actioned — was being written on job cards and never followed up. There was no system to bring a customer back for the work they had already said yes to in principle.
The solution
Workshop Wrench replaced paper job cards with tablet-based repair orders. Technicians log labour, flag deferred items, and attach inspection photos directly to the RO. There is no transcription step — what the tech records is what appears on the invoice.
Additional work discovered during a service is now quoted directly from the RO. Customers receive an SMS with a link to approve or decline — no phone tag required. The approval is timestamped and stored against the job, giving Brad a compliance record for consumer law purposes.
Any item flagged as deferred generates an automatic service reminder at the configured interval — typically 30 or 60 days. Brad's service advisor reviews the list each Monday morning and confirms which reminders to send. The shop recovered an average of four deferred jobs per week in the first quarter.
The results
Metric
Before
After
Change
Invoicing time per day
~2.5 hrs
~1 hr
Invoice error rate
~8%
<1%
Avg repair order value
$410
$490
Estimate approval rate
64%
81%
Deferred work recovered / week
0
~4 jobs
Results based on data provided by Sydney Auto Centre and published with their explicit consent.
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