What Do Auto Repair Terms Like Effective Labor Rate Mean?
Your sign says one labor rate. Your bank account says another. The gap between the two has a name.
This glossary covers the auto repair terms in the 2027 trends, from billed hours to right to repair, so you can find where your shop’s money goes.
Independent garages are a regular stop for Dr. Paul, who has worked with 1,000+ small businesses.
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Last Updated: November 2026
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Auto Repair Business Plan Template
Built around adas calibration, billed hours, and more.
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Looking up one word? Scroll to it below. Each term links to the trend that uses it. Rather read a story? The big bear who runs the forest garage in Dr. Paul’s Fabled Forest Business School Series learns what effective rate means right after the list.
ADAS calibration through Technician shortage, grouped by topic.
What Does Each Auto Repair Term Mean?
From adas calibration to technician shortage, each entry is short enough to read in under a minute.
ADAS calibration
Aiming the cameras and sensors behind driver-assist features after a repair or windshield change. It takes special tools and training, and it pays well.
Average repair order (ARO)
What one repair order brings in, on average. Divide total sales by the number of repair orders.
Average vehicle age
How old the cars on the road are, on average. Older cars need more repairs, which means more work for independent shops.
Billed hours
The labor hours you charge customers for. Compare them with clock hours to see how much of the day is paid work.
Used on: 2027 auto repair trends
Comeback
A car that returns because a repair did not fix the problem. It costs a free redo and some trust.
Effective labor rate
Labor sales divided by billed hours. It is what you really earn per hour after discounts and warranty work, and it is often lower than the posted rate.
Parts margin
What you earn on parts after paying for them. Rising parts prices squeeze it unless you update your parts pricing.
Posted labor rate
The hourly rate on your sign or menu, also called door rate. It is the starting point, not what you actually collect.
Right to repair
Laws and agreements that let independent shops get the same repair data and tools as dealers.
Shop valuation
What a buyer would pay for your shop. It usually rests on steady profit, a trained team, and an owner who is not the only one who knows everything.
Technician efficiency
Billed hours divided by clock hours for each tech. If a tech bills 6 hours in an 8-hour day, efficiency is 75%.
Technician shortage
Fewer trained techs than the work needs. It pushes wages up and makes keeping your team as important as hiring.
From the Fabled Forest
Why Did the Bear’s Raise Not Show Up?
The bear raised his posted labor rate in spring. By summer, profit had barely moved. Doctor Owl pulled the repair orders. Half the jobs were discounted, and warranty work paid less. His effective labor rate was well below the sign. Slow leak, so a foundation problem. The fix came from Dr. Paul’s Organize-Plan-Grow™ Strategy: track effective rate weekly, cap discounts, and quote diagnostics as their own line.
Full Bays, Flat Profit?
Bring a month of repair orders, and Dr. Paul will show you where the hours and dollars slip away.
Or call or text (321) 948-9588.
Where Should You Go Next?
Read the 2027 auto repair trends to see comeback at work, or open the auto repair shop template. The trends hub covers nine more industries.
About the Author
Shop owners and service managers ask Dr. Paul Borosky where the hours go. His DBA and MBA in Finance, and work with 1,000+ small businesses, are behind these auto repair definitions.