Inventory Management Best Practices for Auto Repair Shops

|

May 22, 2023

|

Read time: 3 min

The answer to that question depends on a number of factors, and getting the right categorization for each part is crucial for maintaining healthy profit margins while minimizing the risk of rush orders and frustrated customers.

Inventory and Stock Management to Minimize Complexity

When you and your team are replacing parts during repairs, it’s important to consider what parts you have on hand versus what parts you’ll need to order.

If you don’t, you risk overstocking and sinking money into too many units of a particular type of part, or understocking and making a customer wait while you hope that the expedited shipping for a part pulls through.

By having the right inventory and stock management processes in place, you can make it easier for your service advisors and technicians to avoid frustrations.

Here are some best practices for inventory and stock management at your auto repair shop.

What Counts as Inventory? What Counts as Stock?

First, a quick refresher on the difference between inventory and stock.

“Inventory” includes the parts you sell to customers and the parts that your shop uses to make repairs (such as wrenches, alignment machines, and engine hoists).

On the other hand, “stock” only includes the parts you sell to customers during the usual course of repair work.

Regardless of whether a part falls under inventory or stock, it’s crucial to label every single parts transaction to reduce your risk of accounting gaps, billing inconsistencies, and more.

You can avoid these pitfalls by creating a streamlined parts management and reconciliation process.

Make Any Necessary Adjustments to Your Parts Sorting System

It might seem natural to label all your parts, even the ones you purchase multiple times per month, as inventory. However, while this process seems efficient, it introduces two problems.

First, you won’t be able to get the clearest view of your shop’s metrics. Say you buy spark plugs and sell them to your customers over 30 times a month.

If you count them as inventory, you won’t have a clear picture of just how many spark plugs you’re purchasing a month.

Second, you’ll be adding another layer of complexity to your inventory list. If you buy spark plugs, log them as inventory, then sell them to customers and put them in their vehicles, you’ll have to log all of those steps.

This can quickly lead to confusion.

If you count the spark plugs as part of stock, you’ll have a much clearer view of the metrics and will be better able to track whether or not you have enough of this oft-used, essential part.

The best way to determine when you should count a part as stock as opposed to inventory is to ask yourself these basic questions:

  • What is the business function of this part?
  • How often does my shop order this part?
  • Is this part sold to customers?
  • How often does my shop sell it?  

The answers to each of these questions will get you to your answer. For example, a tire’s business function is to be used in a customer’s vehicle (meaning, you sell it to the customer). If your shop orders a particular brand and size of tires an average of 40 times per month and sells it an average of 38 times per month, you should categorize that as stock.

Accurately Maintain and Track Stock levels

Ordering too much of a stock part can cut into your shop’s profit margin, but ordering too little of it could keep customer vehicles at your shop longer.

How much of a part to order, and how often to place those orders, depends on your shop’s unique circumstances.

For instance, let’s say you determine that your shop needs to sell customers a part only an average of ten times per month, and a few nearby auto parts stores tend to keep that part in stock.

In that case, you could adopt a “just-in-time” approach toward that part, buying it as close as possible to the time you’ll need it.

Tekmetric: A Shop Management System That Makes Managing Parts Easy

Metrics are the key to accurately maintaining and tracking your stock levels, however, tallying these numbers by hand can be time-consuming. By using a shop management system like Tekmetric, you can simplify and speed up the parts management process.

With Tekmetric, you can log parts as on-hand, in-use, ordered, and above stock or below stock.

You can also filter parts by brand, part name, part number, retail price, and primary vendor and see exactly how many units of each part you have available at your shop—and how much each unit costs to buy.

Additionally, you can directly order parts and create parts markup matrices from Tekmetric.

This article was written with the guidance of automotive repair industry CPA
Hunt Demarest of
Paar, Melis, & Associates, P.C.

👉 Ready to grow your automotive business? [Book a personalized Tekmetric Demo Here]

FAQ

similar articles

Scaling your auto repair business requires moving beyond simple spreadsheets and paper repair orders. You need a robust shop management software that has enterprise-level features, centralized real-time reporting, and helps you provide a consistent customer experience across locations.

This guide breaks down the top enterprise software solutions for auto repair shops with 2+ locations.

Top 5 Enterprise Solutions for Shops With Multiple Locations

Finding the right software partner for your expanding shop is critical to your success. Below you will find our top overall picks for multi-shop operators (MSOs).

1. Tekmetric

Multi-shop owners love Tekmetric because they can run their entire business, across all locations, from one platform. Featuring an all-in-one shop management solution with centralized real-time reporting, marketing, payments, and 70+ integrations, Tekmetric makes it easier for you to manage multiple locations.
Why we picked Tekmetric:

  • Unified inventory & part management: See your entire inventory availability, order parts, and transfer parts across locations as needed.
  • All-in-one solution: Instead of switching between platforms, Tekmetric offers shop management, POS, and CRM in one place.
  • Company history: Built by a former shop owner, Tekmetric is often praised for ease of use, simple onboarding, reliable support, and listening to customer feedback.
  • Pricing: Starts at $179/mo (billed annually).

2. Shop-Ware

Shop-Ware is designed to help you maintain consistency across multiple locations with unified customer history, reporting, and employee management features.

Why we picked Shop-Ware:

  • Reporting: Find the metrics that matter the most to your business.
  • Customer experience: Standardize your customer experience across locations.
  • Employee management: Easily compare employee productivity and manage permission levels.
  • Pricing: Starts at $224/mo (billed annually).

3. Protractor

Protractor is a popular shop management system for shops with multiple locations or franchises. Protractor offers advanced reporting features and shop management features so you can run your shop confidently.

Why we picked Protractor:

  • Reporting: Performance tracking, insights, and employee productivity monitoring.
  • Accounting: Built-in accounting tools.
  • Integrations: Multiple integration partners.
  • Pricing: Starts at $359/mo (billed annually).

4. Fullbay

Fullbay specializes in heavy-duty truck and trailer repair shops. Most standard shop software struggles with the complexity of fleet maintenance, but Fullbay was built for it.

Why we picked Fullbay:

  • Centralized inventory: Track parts and inventory across all locations.
  • Integrations: Fullbay has plenty of industry interrogations to keep your shop running.
  • Cloud-based: Manage your shop from anywhere.
  • Pricing: Starting at $188/mo.

5. Garage360

If you are looking for a lighter software solution, Garage360 might be a good option for your shop. Supporting quick-lube, body/collision, and fleet, Garage360 can be used in a variety of shops.

Why we picked Garage360:

  • Versatile: Can be used in multiple shop types.
  • Permission control: Manage your employee permissions across locations.
  • Reporting: Pull the data you need to make informed decisions.
  • Pricing: Starting at $79/mo (billed annually).

Which software features should I look for when I manage multiple shops?

If you are comparing software options for your chain operations, these are the modern features to look for:

Centralized real-time reporting: Tired of trying to guess how each shop location is performing? Pick a software that can pull the data you need from any location or aggregate it across shop locations within a user-friendly dashboard.

Inventory/parts management: Tracking parts can be difficult as you expand. Find a solution that can track inventory levels and transfer parts as needed across locations.

Standardized workflows: Having standard workflows streamlines your shop operations. Select a software that can standardize your operations, prices, and procedures.

Employee permissions: Managing employee permissions is critical to ensuring the safety of your company data and holding employees accountable. Pick a software that keeps your business secure.

Customer communication: Modern customers expect a higher level of communication than they did 10 years ago. Find a shop management solution that provides online scheduling, DVIs, two-way texting, and other modern customer experience tools.

Single vs. Multi-Location Management: What are the differences?

Why can’t you just use a single-shop system? The difference lies in automation and control.

  • Standardization: In a multi-location setup, you need to ensure that technicians at every shop are following the same workflow and procedures so your customer experience is consistent.
  • Visibility: Single shop software may have reporting, but you need to be able to compare metrics between shops to make informed business decisions.
  • Security: Multi-shop software provides employee permission settings and typically comes with advanced data protection.
  • Pricing: Most single-shop software options will charge you per user or limit repair orders. Enterprise software will grow with you and charge based on the number of locations.

Final Thoughts

Choosing an enterprise-level auto repair shop software isn't just about features; it's about finding a partner that helps you maintain a consistent customer experience as you grow. Whether you prioritize inventory management, deep metrics, or standard procedures, ensure you find a solution that can grow with you.

Best Auto Repair Software for Multiple Locations (Full Guide)

January 9, 2026

Read time: 3 min

read more

Most Affordable Auto Repair Shop Software (under $200/mo)

December 31, 2025

Read time: 3 min

read more

Best Auto Repair Software for Small Shops (Complete Guide)

December 18, 2025

Read time: 3 min

read more