Company lists · Data refreshed September 2026

Top 25 Automotive compliance and auditing services based in the United States

Name: Automotive compliance and auditing services 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 297 companies tracked

RevenueBase identified 297 automotive compliance and auditing services headquartered in the United States as of September 2026 and tracks 17,301 professional contacts across them, including 6,205 with verified work emails. Houston is the largest hub.

This list covers automotive compliance and auditing services 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

297Companies

17,301Contacts tracked

6,205Verified emails

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The 25 largest automotive compliance and auditing services based in the United States

Ranked by team size

Top 25 of 297 automotive compliance and auditing services 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 compliance and auditing services: 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	UL Solutions	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 30, 2026	10001+	12,316 contacts →
	Indirect evidence “A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Source: RevenueBase Database · checked Sep 30, 2026
2	Stratosphere Quality	Indirect evidence	Fishers, IN, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,553 contacts →
	Indirect evidence “Stratosphere Quality, founded in 2009, is a major global provider of quality assurance and outsourcing solutions, such as sorting and inspection services, to manufacturers of…” Source: RevenueBase Database · checked Sep 30, 2026
3	TÜV Rheinland North America	Indirect evidence	Boxborough, MA, United StatesHQ checked Sep 30, 2026	501-1,000	712 contacts →
	Indirect evidence “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Source: RevenueBase Database · checked Sep 30, 2026
4	Amci Global	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 30, 2026	201-500	242 contacts →
	Partial evidence “AMCI is an automotive marketing consulting firm made up of automotive experts and enthusiasts.” Source: RevenueBase Database · checked Sep 30, 2026
5	EFG Companies	Partial evidence	Irving, TX, United StatesHQ checked Sep 30, 2026	51-200	159 contacts →
	Partial evidence “For nearly 50 years, EFG Companies has provided consumer and vehicle protection programs to the retail automotive and powersports markets.” Source: RevenueBase Database · checked Sep 30, 2026
6	Sustained Quality	Partial evidence	South Bend, IN, United StatesHQ checked Sep 30, 2026	51-200	83 contacts →
	Partial evidence “Sustained Quality has been a trusted partner in quality since 2007, delivering inspection, sorting, rework/repair, engineering, and containment services to the automotive…” Source: RevenueBase Database · checked Sep 30, 2026
7	PRI Certification	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 30, 2026	11-50	78 contacts →
	Indirect evidence “At PRI Certification℠, we're committed to protecting what matters by delivering industry-leading certification services across Quality, Data Security, Environmental, and Health &…” Source: RevenueBase Database · checked Sep 30, 2026
8	TRP Laboratories	Indirect evidence	Troy, MI, United StatesHQ checked Sep 30, 2026	51-200	70 contacts →
	Indirect evidence “TRP Laboratories provides standard and custom testing services across the United States.” Source: RevenueBase Database · checked Sep 30, 2026
9	Complyauto	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 30, 2026	51-200	65 contacts →
	Partial evidence “ComplyAuto was built by dealers, for dealers to deliver modern compliance solutions backed by legal and dealership expertise.” Source: RevenueBase Database · checked Sep 30, 2026
10	ZT Automotive	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	63 contacts →
	Partial evidence “ZT Automotive is a leading automotive group committed to delivering excellence through Integrity, Growth, Innovation, and Consistency.” Source: RevenueBase Database · checked Sep 30, 2026
11	Dealer Solutions, Inc. DSI	Partial evidence	New Port Richey, FL, United StatesHQ checked Sep 30, 2026	201-500	58 contacts →
	Partial evidence “DSI's talented team of Automotive Parts Professionals performed over 1,500 parts inventories – over $600 MILLION in parts inventory will be audited in 2022 alone!” Source: RevenueBase Database · checked Sep 30, 2026
12	BAY Area Compliance Laboratories, Corp	Partial evidence	Sunnyvale, CA, United StatesHQ checked Sep 30, 2026	11-50	45 contacts →
	Partial evidence “Since 1996, Bay Area Compliance Laboratories Corp.” Source: RevenueBase Database · checked Sep 30, 2026
13	Quality Auditing LLC	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 30, 2026	11-50	43 contacts →
	Partial evidence “Quality Auditing LLC is the industry leader in Quality Management System Auditing & Consulting for clients in highly-regulated industries, including Medical Device…” Source: RevenueBase Database · checked Sep 30, 2026
14	ABS Quality Evaluations	Indirect evidence	Spring, TX, United StatesHQ checked Sep 30, 2026	n/a	41 contacts →
	Indirect evidence “ABS Quality Evaluations, Inc.(ABS QE) is a global leader in quality assurance and business improvement services with over 30 years of experience.” Source: RevenueBase Database · checked Sep 30, 2026
15	Drummond Group, LLC	Partial evidence	Durham, NC, United StatesHQ checked Sep 30, 2026	11-50	40 contacts →
	Partial evidence “Drummond is a leading and trusted compliance, conformance, and standards certification, testing, and validation services provider.” Source: RevenueBase Database · checked Sep 30, 2026
16	Encona	Indirect evidence	Lawrenceburg, TN, United StatesHQ checked Sep 30, 2026	11-50	27 contacts →
	Indirect evidence “Over 500 companies in more than 40 countries trust ENCONA’s professional services.” Source: RevenueBase Database · checked Sep 30, 2026
17	Tiec, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
18	International Quality Control, INC	Partial evidence	Allen Park, MI, United StatesHQ checked Sep 30, 2026	51-200	23 contacts →
	Partial evidence “International Quality Control started out in 1998 and since has grown in both domestic and global markets to help serve the Automotive Industry’s quality needs.” Source: RevenueBase Database · checked Sep 30, 2026
19	GCS Certification	Indirect evidence	Salt Lake City, United StatesHQ checked Sep 30, 2026	51-200	23 contacts →
	Indirect evidence “A GCS Certificadora Brasil é uma empresa do Grupo GCS Certification® que atua no universo das certificações internacionais e possui autonomia para desenvolvimento e atuação em…” Source: RevenueBase Database · checked Sep 30, 2026
20	Total Dealer Solutions	Indirect evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 30, 2026	11-50	23 contacts →
	Indirect evidence “At Total Dealer Solutions (TDS), we help dealerships take control of their most complex challenges - from inventory accuracy to reconciliation and beyond.” Source: RevenueBase Database · checked Sep 30, 2026
21	Pdca International LTD	Indirect evidence	Sacramento, CA, United StatesHQ checked Sep 30, 2026	11-50	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
22	FY Consulting, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	22 contacts →
	Indirect evidence “FY Consulting \| ISO & Cybersecurity Consultants ISO 9001 · ISO 27001 · AS9100 · ISO 13485 · CMMC · NIST 800-171 We build management systems around real business processes, not…” Source: RevenueBase Database · checked Sep 30, 2026
23	Complynet, A KPA Company	Partial evidence	Regtech - Software-as-a-service, United StatesHQ checked Sep 30, 2026	51-200	17 contacts →
	Partial evidence “ComplyNet, a KPA company, is the #1 dealership compliance platform with state and national association endorsements, and the only one-stop shop for dealership compliance.” Source: RevenueBase Database · checked Sep 30, 2026
24	SGS Group Management LTD	Indirect evidence	Fairfield, NJ, United StatesHQ checked Sep 30, 2026	11-50	16 contacts →
	Indirect evidence “SGS is the world's leading inspection, verification, testing and certification company.” Source: RevenueBase Database · checked Sep 30, 2026
25	Apex Quality Assurance	Indirect evidence	Wilmington, NC, United StatesHQ checked Sep 30, 2026	11-50	15 contacts →
	Indirect evidence “APEX Quality Assurances provides trainings, audits and consulting for aerospace, medical device and ISO manufacturers.” 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 compliance and auditing services. 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 compliance and auditing services.
Partial evidence: Its own public description names part of automotive compliance and auditing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive compliance and auditing services. 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 297 automotive compliance and auditing services based in the United States

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Automotive compliance and auditing services based in the United States at a glance

As of Sep 30, 2026

35.9%Verified-email coverage

58.3Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

189

11-50

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 297 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 compliance and auditing services, 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 compliance and auditing services”. 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 compliance and auditing services), 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 compliance and auditing services, 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, 6,205 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 compliance and auditing services, 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 compliance and auditing services are there based in the United States?

RevenueBase identified 297 automotive compliance and auditing services 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?

UL Solutions, headquartered in Northbrook, tops this list with the largest team on record.

Which city has the most automotive compliance and auditing services?

Houston leads with 8 headquartered companies, followed by Los Angeles (6) and Miami (5).

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 6,205 verified decision-maker contacts tracked across these 297 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.

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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 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.