Auto repair shop profitability

What is a good average repair order for an auto repair shop?

There is no universal ARO target. The right number depends on vehicle mix, services offered, labor rates, parts mix and the type of work a shop performs.

PartsTech surveyed 752 US general repair shops in 2025. The most commonly reported ARO band was $500 to $749, selected by 36% of respondents, followed by $250 to $499. That is useful context, but it describes the distribution of surveyed shops rather than a profitability benchmark.

A maintenance-focused shop can be profitable with a lower ARO, while a shop doing major engine or drivetrain work may naturally have a much higher one. The more useful comparison is your own trend over time, ideally segmented by advisor, job type and labor versus parts.

Count every ticket, including small jobs. Excluding low-value repair orders can make the average look better without improving the business.

How do you calculate average repair order?

The basic calculation is straightforward:

ARO = total sales from closed repair orders divided by the number of closed repair orders

For better diagnosis, split the result into labor ARO and parts ARO. That shows whether a change in the overall ticket is coming from labor, from parts, or from the mix of work being sold.

For example, a four-bay shop operating at the 2.2 vehicles-per-bay daily car count reported in the PartsTech 2025 survey would handle roughly nine vehicles a day. Across about 20 working days, a $50 change in ARO would represent roughly $9,000 in additional monthly revenue before any change in costs, taxes or other expenses. That illustrates the leverage in ARO. It is not a forecast of profit.

Why is ARO important for shop profitability?

Because even a modest change applies across every closed repair order. Increasing ARO through legitimate work that customers actually need can raise revenue without more bays or more vehicles.

The distinction that matters is between capturing work that already exists and simply selling harder. A technician may identify additional needed work, but if the recommendation is not clearly documented, presented and followed up, the shop never captures it.

Selling unnecessary work is a different matter. A higher ARO is not automatically healthier if it brings comebacks, disputes or customer churn with it.

Why doesn't a higher ARO always mean more profit?

Because revenue and profit are not the same thing. A higher ticket can come from additional labor and parts, but the cost of those inputs matters too. A shop can hold a strong ARO and still lose profit through a low effective labor rate, rework, idle capacity, administrative time and other leakage.

A comeback matters here more than its size suggests, because it consumes technician time and capacity while eroding customer trust, and it never makes the earlier ARO look worse. See what a comeback really costs a repair shop.

Posted labor rate and effective labor rate are also different measurements. The effective rate is what the shop actually collects per labor hour after discounts, unbilled time and rework.

Where does profit leak out of a repair shop?

Usually in time that is paid for but produces no billable work. Four cases cover most of it.

Status conversations. Repeated "where's my vehicle?" calls take service-advisor time and interrupt technicians, who have to stop work to find the answer.

Waiting for authorization. A vehicle occupies capacity while an estimate waits for approval, and until the work is authorized the shop often cannot proceed or order parts. See why it takes so long to get a repair approved.

Schedule disruption. Missing parts and interruptions push work through the schedule inefficiently. See why parts delays cost more than the parts.

Reconciliation. Matching verbal agreements, invoices and repair orders by hand is administrative work that produces no billable hours.

Together these explain why calendar time and billable touch time diverge so far. See why repairs take longer than the work itself.

What is the average profit margin for an auto repair shop?

There is no single industry-average net margin worth treating as a benchmark without checking what is underneath it. One specific percentage is widely repeated online, and we could not tie it to a named primary study.

According to IBISWorld, US auto mechanics industry revenue is roughly $89.6 billion across approximately 303,000 businesses. That establishes the size of the market. It establishes nothing about the net margin of an individual shop.

For owners, the useful approach is to track the shop's own gross margin, effective labor rate, operating expenses, net margin and capacity over time.

What numbers should an auto repair shop track?

Four measurements are a good starting point.

1. 1ARO, split into labor and parts. Shows what each closed repair order produces, and which half is moving.
2. 2Effective labor rate. What the shop actually collects per labor hour, against its posted rate.
3. 3Declined work. Recommendations customers did not approve, recorded so legitimate opportunities can be followed up later.
4. 4Hours that reach a vehicle. Paid working time against time actually spent producing billable vehicle work.

Together these explain profitability far better than ARO on its own.

The short version

Profitability is not decided by ARO alone. Labor rates, parts margins, effective labor rate, approved work, comebacks, capacity and administrative leakage all move it. PartsTech's 2025 survey of 752 US shops found $500 to $749 was the most commonly reported ARO band, but your own trend is a better benchmark than a national survey.

Key facts

• The most commonly reported ARO band among 752 US general repair shops surveyed by PartsTech in 2025 was $500 to $749, selected by 36% of respondents.
• $250 to $499 was the second most commonly reported band in that survey.
• PartsTech reported an average daily car count of 2.2 vehicles per bay in its 2025 survey.
• ARO should be read alongside labor ARO, parts ARO and effective labor rate.
• Posted labor rate and effective labor rate differ because of discounts, unbilled time and rework.
• A widely repeated industry-average net-margin percentage could not be tied to a named primary study and should be treated cautiously.
• US auto mechanics industry revenue is roughly $89.6 billion across approximately 303,000 businesses, according to IBISWorld.

Sources and editorial note

• PartsTech, The State of General Auto Repair Shops in the United States, 2025, a survey of 752 US shops.
• IBISWorld, US auto mechanics industry revenue and business count.

Reviewed in September 2026. Industry averages are reference points, not guarantees of shop performance. Financial decisions should rest on the shop's own records and operating data. If any detail here is out of date or incorrect, tell us at contact@autograff.ai and we will correct it.