Company lists · Data refreshed September 2026

Top 25 Automotive diagnostic companies based in the United States

Name: Automotive diagnostic companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,496 companies tracked

RevenueBase identified 1,496 automotive diagnostic companies headquartered in the United States as of September 2026 and tracks 31,950 professional contacts across them, including 8,620 with verified work emails. Houston is the largest hub.

This list covers automotive diagnostic companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

1,496Companies

31,950Contacts tracked

8,620Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest automotive diagnostic companies based in the United States

Ranked by team size

Top 25 of 1,496 automotive diagnostic companies based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to automotive diagnostic companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	COX Automotive INC	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 30, 2026	10001+	8,503 contacts →
	Partial evidence “Cox Automotive is the world’s largest automotive services and technology provider.” Source: RevenueBase Database · checked Sep 30, 2026
2	Snap-On Business Solutions	Indirect evidence	Richfield, OH, United StatesHQ checked Sep 30, 2026	501-1,000	766 contacts →
	Indirect evidence “Snap-on Business Solutions (SBS) is a part of Snap-on Incorporated’s Repair Systems & Information Group.” Source: RevenueBase Database · checked Sep 30, 2026
3	Nexamotion Group	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 30, 2026	1,001-5,000	609 contacts →
	Partial evidence “NexaMotion Group is a dynamic organization in the automotive aftermarket, uniting a diverse family of brands including Transtar Aftermarket Solutions, Arch Auto Parts, C&M Auto…” Source: RevenueBase Database · checked Sep 30, 2026
4	Alldata	Partial evidence	Elk Grove, CA, United StatesHQ checked Sep 30, 2026	201-500	607 contacts →
	Partial evidence “ALLDATA® is the leading provider of OEM automotive repair information and solutions to the professional automotive service industry.” Source: RevenueBase Database · checked Sep 30, 2026
5	Mitchell1	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 30, 2026	201-500	471 contacts →
	Indirect evidence “Headquartered in San Diego, California, Mitchell 1 has provided quality repair information solutions to the motor vehicle industry for 100 years.” Source: RevenueBase Database · checked Sep 30, 2026
6	Motor Information Systems	Partial evidence	Troy, MI, United StatesHQ checked Sep 30, 2026	201-500	353 contacts →
	Partial evidence “MOTOR Information Systems, one of the world’s premier suppliers of automotive data, has been trusted by the industry to provide accurate, thorough and timely information since…” Source: RevenueBase Database · checked Sep 30, 2026
7	Protech Automotive Solutions	Strong evidence	Lewisville, TX, United StatesHQ checked Sep 30, 2026	10001+	320 contacts →
	Strong evidence “At Protech Automotive Solutions®, we are dedicated to pioneering advanced diagnostic scanning, ADAS calibration, and mechanical expertise to ensure vehicle safety and reliability.” Source: RevenueBase Database · checked Sep 30, 2026
8	Noregon Systems	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 30, 2026	201-500	316 contacts →
	Indirect evidence “At Noregon, we are experts at acquiring, analyzing, and interpreting vehicle data.” Source: RevenueBase Database · checked Sep 30, 2026
9	Astech	Partial evidence	Plano, TX, United StatesHQ checked Sep 30, 2026	501-1,000	313 contacts →
	Partial evidence “Headquartered in Plano, Texas, asTech® focuses on providing OEM diagnostics to collision repair shops nationwide.” Source: RevenueBase Database · checked Sep 30, 2026
10	Dobbs Tire & Auto Centers	Partial evidence	High Ridge, MO, United StatesHQ checked Sep 30, 2026	1,001-5,000	264 contacts →
	Partial evidence “At Dobbs Tire & Auto Centers, we’re more than just a trusted name in tires and automotive service-we’re a team driven by excellence, powered by purpose, and committed to growing…” Source: RevenueBase Database · checked Sep 30, 2026
11	Diesel Laptops	Indirect evidence	Irmo, SC, United StatesHQ checked Sep 30, 2026	51-200	258 contacts →
	Indirect evidence “Diesel Laptops provides commercial truck efficiency solutions for truck repair facilities.” Source: RevenueBase Database · checked Sep 30, 2026
12	Kett Engineering Corporation	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 30, 2026	501-1,000	250 contacts →
	Partial evidence “Kett Engineering Corporation has been operating for over 60 years and has spent the past 28 years dedicating its services to supporting the automotive testing and staffing needs…” Source: RevenueBase Database · checked Sep 30, 2026
13	Tuffy Tire & Auto Service	Partial evidence	Toledo, OH, United StatesHQ checked Sep 30, 2026	1,001-5,000	233 contacts →
	Partial evidence “TUFFY HISTORY Tuffy is one of the largest automotive repair chains in the country.” Source: RevenueBase Database · checked Sep 30, 2026
14	Experian Automotive	Partial evidence	Schaumburg, IL, United StatesHQ checked Sep 30, 2026	10001+	232 contacts →
	Partial evidence “Experian Automotive clients leverage our world-class automotive intelligence to better understand their markets, manage risk, and market to the right customers and keep them…” Source: RevenueBase Database · checked Sep 30, 2026
15	VEHLO	Indirect evidence	Knoxville, TN, United StatesHQ checked Sep 30, 2026	501-1,000	210 contacts →
	Indirect evidence “Vehlo solutions unlock potential across vehicle service and repair by giving power back to your people.” Source: RevenueBase Database · checked Sep 30, 2026
16	Spiffy	Indirect evidence	Apex, NC, United StatesHQ checked Sep 30, 2026	501-1,000	190 contacts →
	Indirect evidence “Spiffy® is the Mobile Service Operating System for Dealers, the complete platform powering how dealerships launch, run, and scale profitable mobile service operations.” Source: RevenueBase Database · checked Sep 30, 2026
17	Opus IVS - US	Strong evidence	Dexter, MI, United StatesHQ checked Sep 30, 2026	501-1,000	169 contacts →
	Strong evidence “Opus IVS helps independent automotive shops repair the most complex vehicles fast with diagnostics, programming and live repair guidance from OE brand-specific master technicians.” Source: RevenueBase Database · checked Sep 30, 2026
18	Innova Electronics Corp	Strong evidence	Irvine, CA, United StatesHQ checked Sep 30, 2026	51-200	153 contacts →
	Strong evidence “THE AUTOMOTIVE AFTERMARKET INDUSTRY LEADER Innova Electronics Corporation is a leading supplier of test equipment and diagnostic reporting for the automotive aftermarket, offering…” Source: RevenueBase Database · checked Sep 30, 2026
19	Intrepid Control Systems	Indirect evidence	Troy, MI, United StatesHQ checked Sep 30, 2026	201-500	145 contacts →
	Indirect evidence “Intrepid Control Systems is a global provider of Innovative Vehicle Network and Embedded tools.” Source: RevenueBase Database · checked Sep 30, 2026
20	Repairify, INC	Indirect evidence	Plano, TX, United StatesHQ checked Sep 30, 2026	501-1,000	132 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
21	Airpro Diagnostics	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 30, 2026	201-500	126 contacts →
	Indirect evidence “Complete end-to-end solutions for collision, glass, and repair shops.” Source: RevenueBase Database · checked Sep 30, 2026
22	Mobile Auto Solutions	Partial evidence	Broadview, IL, United StatesHQ checked Sep 30, 2026	201-500	122 contacts →
	Partial evidence “Mobile Auto Solutions provides unrivaled experience, capabilities, training, and equipment to the automotive industry.” Source: RevenueBase Database · checked Sep 30, 2026
23	Elitek Vehicle Services	Indirect evidence	Farmers Branch, TX, United StatesHQ checked Sep 30, 2026	201-500	121 contacts →
	Indirect evidence “We are your solution for sublet repairs and a variety of critical vehicle repair solutions.” Source: RevenueBase Database · checked Sep 30, 2026
24	HP Tuners	Indirect evidence	Buffalo Grove, IL, United StatesHQ checked Sep 30, 2026	51-200	120 contacts →
	Indirect evidence “HP Tuners, Connect, Read, Edit, Write, Drive… HP Tuners, the home of VCM Suite and the MPVI since 2003.” Source: RevenueBase Database · checked Sep 30, 2026
25	Wrench, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	115 contacts →
	Partial evidence “Wrench is a nationwide marketplace that connects automotive experts to vehicle owners, removing the hassle of vehicle ownership through trust, transparency, and convenience.” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: automotive diagnostic companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names automotive diagnostic companies.
Partial evidence: Its own public description names part of automotive diagnostic companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive diagnostic companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,496 automotive diagnostic companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 8,620 reachable decision-makers.

Free signup · no credit card

View the full list →

Automotive diagnostic companies based in the United States at a glance

As of Sep 30, 2026

27.0%Verified-email coverage

21.4Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

957

11-50

388

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,496 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among automotive diagnostic companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “automotive diagnostic companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names automotive diagnostic companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among automotive diagnostic companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 8,620 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names automotive diagnostic companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many automotive diagnostic companies are there based in the United States?

RevenueBase identified 1,496 automotive diagnostic companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

COX Automotive INC, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most automotive diagnostic companies?

Houston leads with 26 headquartered companies, followed by Chicago (17) and Austin (16).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 8,620 verified decision-maker contacts tracked across these 1,496 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,496 automotive diagnostic companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Automotive diagnostic companies by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.