Company lists · Data refreshed November 2026

Top 25 Vehicle diagnostic testing services based in the United States

RevenueBase identified 1,305 company matches for vehicle diagnostic testing services associated with the United States as of November 2026 and tracks 9,308 professional contacts across them, including 2,143 with verified work emails. Houston is the largest hub.

This list covers company matches for vehicle diagnostic testing services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,305Companies
9,308Contacts tracked
2,143Verified emails
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The 25 largest vehicle diagnostic testing services based in the United States

Ranked by team size
Top 25 of 1,305 company matches for vehicle diagnostic testing services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 2026201-500534 contacts →

Exact match

“Headquartered in San Diego, California, Mitchell 1 has provided quality repair information solutions to the motor vehicle industry for 100 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLewisville, TX, United StatesHQ recorded Nov 6, 202610001+341 contacts →

Exact match

“At Protech Automotive Solutions®, we are dedicated to pioneering advanced diagnostic scanning, ADAS calibration, and mechanical expertise to ensure vehicle safety and reliability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPlano, TX, United StatesHQ recorded Nov 6, 2026501-1,000331 contacts →

Exact match

“Headquartered in Plano, Texas, asTech® focuses on providing OEM diagnostics to collision repair shops nationwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchGreensboro, NC, United StatesHQ recorded Nov 6, 2026201-500320 contacts →

Exact match

“At Noregon, we are experts at acquiring, analyzing, and interpreting vehicle data.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchIrmo, SC, United StatesHQ recorded Nov 6, 202651-200278 contacts →

Exact match

“Diesel Laptops provides commercial truck efficiency solutions for truck repair facilities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchTroy, MI, United StatesHQ recorded Nov 6, 2026201-500262 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchKnoxville, TN, United StatesHQ recorded Nov 6, 2026501-1,000220 contacts →

Exact match

“Vehlo solutions unlock potential across vehicle service and repair by giving power back to your people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchIndianapolis, United StatesHQ recorded Nov 6, 2026201-500220 contacts →

Exact match

“POLARIS Laboratories® can help you prevent maintenance failure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchDexter, NY, United StatesHQ recorded Nov 6, 2026501-1,000173 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchIrvine, CA, United StatesHQ recorded Nov 6, 202651-200172 contacts →

Exact match

“THE AUTOMOTIVE AFTERMARKET INDUSTRY LEADER Innova Electronics Corporation is a leading supplier of test equipment and diagnostic reporting for the automotive aftermarket, offering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPlano, TX, United StatesHQ recorded Nov 6, 2026501-1,000149 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBroadview, IL, United StatesHQ recorded Nov 6, 2026201-500138 contacts →

Exact match

“Mobile Auto Solutions provides unrivaled experience, capabilities, training, and equipment to the automotive industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBuffalo Grove, IL, United StatesHQ recorded Nov 6, 202651-200133 contacts →

Exact match

“HP Tuners, Connect, Read, Edit, Write, Drive… HP Tuners, the home of VCM Suite and the MPVI since 2003.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchFarmers Branch, TX, United StatesHQ recorded Nov 6, 2026201-500133 contacts →

Exact match

“We are your solution for sublet repairs and a variety of critical vehicle repair solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 2026201-500129 contacts →

Exact match

“Complete end-to-end solutions for collision, glass, and repair shops.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSunnyvale, CA, United StatesHQ recorded Nov 6, 2026201-500113 contacts →

Exact match

“Your partner in auto safety.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchTroy, MI, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“TRP Laboratories provides standard and custom testing services across the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchCleveland, MS, United StatesHQ recorded Nov 6, 202611-5057 contacts →

Exact match

“Hickok has been in the business of developing and manufacturing tools and equipment for over 100 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchFarmington Hills, MI, United StatesHQ recorded Nov 6, 202611-5056 contacts →

Exact match

“DG Technologies (formerly Dearborn Group) is a value leader in vehicle network solutions for in-vehicle and controller area networks providing diagnostic, reprogramming…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLas Vegas, NV, United StatesHQ recorded Nov 6, 2026201-50053 contacts →

Exact match

“MPi is the leading provider of vehicle inspection tools, processes and consulting for auto dealer service departments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOntario, CA, United StatesHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“Launch Tech USA, headquarters for North American operations and located in Ontario, California.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPlano, TX, United StatesHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“Our extensive nationwide network, innovative services, and cutting-edge technology make your inspection process faster, more convenient, and hassle-free.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchFairlawn, OH, United StatesHQ recorded Nov 6, 2026501-1,00050 contacts →

Exact match

“In July 2017, OEC acquired Clifford Thames (CT), further extending its global automotive industry reach.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchDiagonal, MI, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Excel Engineering is a highly qualified and certified provider of testing services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSpokane, United StatesHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“Founded in 1986, LITE-CHECK was the first company to offer electronic testers for commercial trailers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,305 vehicle diagnostic testing services based in the United States

See the full list, filter by size, metro and specialty, and access 2,143 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Vehicle diagnostic testing services based in the United States at a glance

As of Nov 6, 2026
23.0%Verified-email coverage
7.1Average contacts per company
1-10Median size (employees)
1.6%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
873
11-50
331
51-200
43
201-500
14
501-1,000
7
1,001-5,000
2
5,001-10,000
1
10001+
1

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 1,305 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “vehicle diagnostic testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,143 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “vehicle diagnostic testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many vehicle diagnostic testing services are there based in the United States?

RevenueBase identified 1,305 company matches for vehicle diagnostic testing services associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Mitchell1 tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most vehicle diagnostic testing services?

Houston leads with 21 company records, followed by Chicago (14) and Austin (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,143 professional contacts with verified work emails tracked across these 1,305 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,305 vehicle diagnostic testing services based in the United States. Start with a free account, no credit card.

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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 SmartSearch, 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.