If your shop isn't using at least one mark up matrix to get the most out of your parts sales, then you might be leaving a lot of money on the table.
In fact, auto repair shops have an amazing opportunity to maximize their profit margin on parts sales in particular. Especially when you consider the tools available to support and simplify the entire process. Gone are the days of using pen and paper or busting out the calculators.
Cloud-based shop management systems have made it easier than ever to not only manage your shop, but really get the most value out of the work you're already doing.
Using a parts matrix in particular is one of the most important aspects in making sure your shop is profitable. By building streamlined process for marking up parts, shops can ensure grow your shop’s profit margin while staying fair to customers.
What is an Auto Parts Markup Matrix?
An auto parts markup matrix is a powerful tool for optimizing your parts pricing and increasing your gross profit.
When it comes to providing parts for a repair, auto repair shops can build multiple markup matrixes to determine the best markup percentage to apply based on different factors, like how much it costs your shop to purchase the part from your selected vendor.
In our latest Auto Repair Industry Index shops were achieving an average 35% with just 3 markup matrixes. There's a lot of room to grow their profits!
Why should shops use a parts markup matrix?
It might be easy for a shop to leave parts markups up to individual service advisors. However, this can result in widely varied processes based on each employee’s unique experience.
You want to build a consistent, reliable mark-up process to save your team time, while maximizing profit yet remaining fair to your customers.
With a detailed parts markup matrix in place there’s no more second-guessing.
Instead of spending precious time figuring out the right markup for every single repair order, the perfect markup percentage can be applied every single time -- both saving time while maximizing profit margins on every repair order.
The Price is Right: Efficient Parts Shopping
Before you decide how much to mark up a part, you obviously have to buy that part (or find it in the inventory). When shopping for parts, getting good deals is important, but so is having an efficient process for finding those deals. Efficient shops strike a balance between quickly finding parts and snagging good deals.
There are various ways to quickly shop around and find the best deal on parts. Some shops still send their part’s person to the local auto parts shop or scrapyard to find those hard-to-find parts.
These days, many auto repair shops save themselves a lot of hassle by turning to shop management systems that enable them to swiftly compare prices from multiple vendors at once. With online parts houses, repair shops can earn back the time they would have spent sending someone to hunt down these parts and making these comparisons in person.
Mark Up Parts By Just the Right Amount
After comparing prices and deciding which parts to purchase, it’s time to find the markup “sweet spot,” where it’s a good deal for your customers and your business.
As a general rule of thumb, the more expensive a part is, the less you can mark it up.
Consider this: fast food companies make some of their highest profit margins off of their least expensive menu item—soda. If a cup of soda costs the fast-food company $0.25, charging a dollar for it gives them a 75% profit margin. But a 75% profit margin on a hamburger that costs the fast-food company $7 to make would hike up the price to $12.25, which is probably more than most customers are willing to spend.
If you double the price of a $10 wiper blade, the customer won’t bat an eye. But if you try to mark up the price of a $400 alternator by 100%, it’s a different story! The customer will balk at the $800 price tag and probably go ask another shop for a second opinion.
Reach the Right Pricing With a Parts Matrix
Marking up Parts with a Simple Calculation
A simple calculation is used when you markup parts in a certain price range by a specific amount.
But you can also use a compound calculation for parts markups. With a compound calculation, parts are marked up by different percentages within specific cost ranges. For example, if you sell a job for $20, you could mark up the first $10 by 10%, and the last half by 20%.
Marking up Parts with a Complex Calculation
While compound calculations are more complicated, using them for your markup matrix can give you an edge when it comes to increasing your gross profit margins. Some shop owners that use complex calculations in their parts markups have been able to increase their profit margin by about 8% to 10% when compared to using a simple calculation.
Find the Right Markup Matrix For Your Shop
Ultimately, each shop has unique needs and preferences, and it’s up to you and your team to determine which type of calculation to use when building your parts matrix. But no matter which calculation method you choose, an automotive markup matrix can be a game-changer.
Remember spring and summer of 2020? A lot of us are probably trying to forget and move forward, and we feel you. It was a scary time period for everyone, including the automotive repair industry.
Last April, auto shop owners were wondering, are my customers going to come into the shop? If people stay inside, are they going to drive less? If they drive less, are they still going to come into the shop as frequently? What if other industries are affected, and people have less money for repairs?
We were nervous like everyone else. But anyone who knows Tekmetric knows that we’re committed to driving the auto repair industry forward; we wanted to answer these questions and put Auto Repair Professionals’ minds at ease.
We also wanted to enable shops to not only endure the pandemic but also grow and come out stronger than ever before.
Strength in Numbers
If there’s one thing that makes us feel confident, empowered, and like we know what’s going on, it’s numbers. (Tracking shop performance and providing insights is kind of our thing).
We’ve seen the power of metrics in shops across America, and we know that customers, service advisors, technicians, and the entire auto repair industry benefit when auto shop owners can make informed decisions.
So we launched the TM-500 Index. The TM-500 tracks the Average Repair Order and Car Count of five hundred auto repair shops located across the United States. But data don’t mean squat if it ain’t easy to read. The TM-500 let’s users sort data by time and region so they can quickly explore trends.
Want to know the ARO and Car Count between the months of June and November of 2020? Simply set the time period “by month,” and the TM-500 will generate an easy-to-read graph.
Want to know if shops in midwest states had a higher or lower Car Count than southwest states last summer? Simply set the time period you want to observe, and hover over different regions on a map of the United States to learn how they performed.
Just as the Tekmetric system for auto repair shop management gives shop owners better insights into their shops, the TM-500 gives Auto Repair Professionals better insights into their industry.
But knowing is only half the battle.
A Catalyst for Digital Transformation
The auto repair industry has lagged behind almost every other service industry in how we utilize technology. Almost anyone with a smartphone can order a pizza, sushi, enchiladas, or any other food they want and track it while it’s being delivered to their door.
Meanwhile, someone paying hundreds or even thousands of dollars for a new transmission still has to go in-person and deal with a half-legible piece of paper that feels greasier than the pizza and enchiladas put together!
But we get it. People are sometimes reluctant to change. For many auto shop owners, however, the COVID-19 pandemic was the “now or never” moment to fully digitize their shops.
In 2020, Tekmetric prioritized the rollout of several features we had been working on to help shops provide their customers with the experience they’ve come to expect in almost every other part of their lives. In April of 2020, we rolled out Text-to-Pay, allowing shops to invoice and collect payment via text message.
In November of 2020, we rolled out True Two-Way Texting to make it easy for service advisors and customers to communicate throughout the entire repair process.
Combined, these two features enabled Tekmetric users to provide a completely touchless experience to their customers without sacrificing the quality of their work or customer service.
Much like in other industries, customers who bring their cars in for repairs appreciate the extra service and transparency of a more enhanced, digitally assisted customer experience.
As we watched many shops grow by using Tekmessage and Tekmerchant, we kept an eye on the overall performance of the TM-500. We were able to see when shops began to bounce back in summer after an early slump, and developed other understandings about where the industry was headed.
Over time, we have added new metrics to the TM-500 such as state-by-state Labor Margin, Parts Margin, Effective Labor Rate, and Car Count to gain a more complete picture of these high-performing shops.
What Have We Learned Since the Onset of the Pandemic?
When making conclusions about where the industry is going, we like to be informed by both quantitative and qualitative data.
The numbers give us a factual look at what’s gone up or down, and talking to people in the industry helps us make correlations between how certain behaviors, processes, and principles affect these trends.
Between the data we gathered from the TM-500 and the feedback we were able to gather from talking to auto shop owners, here’s what we have learned.
Building a startup takes time, effort, and a lot of determination. You and your team have invested in a great idea, and everyone works diligently to bring new team members, investors, and customers on board. However, the process doesn’t end once the product or service has taken off and gained popularity.
A startup can operate on a lean team, with people wearing multiple hats and taking on extra responsibilities. But as the company grows, it will be time to hire more employees and scale the company to meet demand.
How to scale the business is an enormous question that causes hesitation for many leaders. How do you expand your business offerings and your team without losing the heart and inspiration that helped the startup succeed in the first place?
In my own business, Tekmetric, which offers shop management software for auto repair businesses, I have relied on a few tactics that enabled me—and our whole team—to scale sustainably. Here are four of the most vital.
The Tekmetric Shop Index allows auto repair shops to benchmark themselves against thousands of Tekmetric shops nationwide
Most shop owners have a feel for how their business is doing. They know the slow weeks, the strong months, and whether the bays stayed full. What they often don't have is a good way to compare those numbers against anyone else.
That gap is where opportunity hides — and it's exactly what the Tekmetric Shop Index is built to close.
The Tekmetric Shop Index is a free benchmarking tool that lets you enter your shop's key metrics and instantly see how you stack up against more than 10,000 auto repair shops nationwide. No Tekmetric account is required. No commitments either. It's just an honest look at where your shop stands on the four numbers that matter most.
Top-performing shops track these metrics religiously — and they know exactly where they stand relative to the industry. Here's what each one means, why it matters, and how your numbers compare.
ARO is the average dollar amount of each repair order — total revenue divided by the number of cars you serviced. It's one of the most direct measures of how well your shop is selling and completing work.
A low ARO isn't always a bad sign on its own. But if your car count is healthy and your ARO is lagging, you could be leaving approved work on the table, underquoting, or missing opportunities to present needed repairs. A high ARO, on the other hand, means customers are approving more of the work their vehicles need.
ARO is also the metric most directly tied to your digital vehicle inspection process. Shops that complete digital vehicle inspections (DVIs) consistently — and share them with customers — tend to see higher approval rates and stronger AROs.
"I like the ease and the ability to be more transparent with my customers with detailed inspections and photos." — Verified Tekmetric User, G2
Car count measures how many vehicles you service in a given period. It's the volume side of the revenue equation. ARO tells you how much you make per car; car count tells you how many cars you're making it on.
Both numbers matter. You can have a strong ARO and still struggle to grow revenue if car count is stagnant. And you can have a strong car count but a weak ARO if jobs aren't being sold thoroughly. Top shops keep an eye on both.
Car count breaks down further into new customers and returning customers — a distinction that matters when you're trying to understand whether your growth is coming from acquisition or retention.
"Customers can review inspection results, check estimates, and approve repairs with just a click. Everything is integrated, making our workflow way smoother than before." — Verified Tekmetric User, G2
Parts margin is the percentage of profit you're earning on the parts you sell. It's calculated as (retail price minus cost) divided by retail price.
This one is easy to overlook, especially if your shop has been using the same parts pricing for years. But small differences in parts margin have a compounding effect across hundreds of repair orders. If your parts pricing isn't keeping up with cost increases from your suppliers, your margin erodes quietly.
Top shops use tiered parts matrices that automatically adjust markup based on part cost ranges, protecting margin without requiring manual pricing decisions on every job.
"We were stuck at a certain level. … Once we made the switch, it just opened doors — payments, parts ordering, inventory — it all became more streamlined." — Tim Lanier, Lanier Auto Group, Tekmetric Customer
Effective labor rate is the actual dollar amount your shop earns per labor hour — not your posted rate, but what you actually collect after discounts, flat-rate work, and packaged pricing.
A shop might post a $140/hour labor rate but collect significantly less per hour because of how jobs are built, discounted, or packaged. Tracking effective labor rate surfaces that gap and gives you something concrete to address.
This metric also helps you evaluate how well your labor matrix is working or whether you need one.
"I value its cloud-based agility and the way its real-time shop management board eliminates the bottleneck at the service desk … handling parts tracking and labor margins seamlessly." — Verified Tekmetric User, G2
These four metrics are the foundation of shop performance analysis. But knowing what they are is only half of it. The other half is knowing how your numbers compare — not to a theoretical ideal, but to real shops in the real industry.
That's what the Tekmetric Shop Index is built to show you. It's a free benchmarking tool that lets you enter your shop's numbers and instantly see how you compare to shops across the country on ARO, car count, parts margin, and effective labor rate. No Tekmetric account is required.
"With the implementation of Tekmetric we have seen a dramatic increase in business and positive feedback from customers." — Verified Shop Owner using Tekmetric, G2
You can't improve what you don't measure. And you can't prioritize improvements without knowing where the gaps actually are.
Takeaways
ARO measures revenue per vehicle. Strong shops track it and act on it.
Car count captures volume. Both new and returning customers matter.
Parts margin erodes quietly if you're not tracking it against your costs.
Effective labor rate reveals the gap between your posted rate and what you actually collect.
Benchmarking against real industry data turns these numbers into a roadmap.
See how your shop compares. The Tekmetric Shop Index is free, takes less than two minutes, and doesn't require a Tekmetric account.
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