Company lists · Data refreshed September 2026

Top 25 Automotive supplier audit firms worldwide

Name: Automotive supplier audit firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 5,297 companies tracked

RevenueBase identified 5,297 automotive supplier audit firms worldwide as of September 2026 and tracks 270,774 professional contacts across them, including 53,265 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers automotive supplier audit firms worldwide, 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. Country and city lists for automotive supplier audit firms follow the table.

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

5,297Companies

270,774Contacts tracked

53,265Verified emails

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The 25 largest automotive supplier audit firms worldwide

Ranked by team size

Top 25 of 5,297 automotive supplier audit firms worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to automotive supplier audit firms: 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	Lear Corporation	Partial evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	10001+	40,502 contacts →
	Partial evidence “Lear Corporation (NYSE: LEA) is a global automotive leader in Seating and E-Systems.” Source: RevenueBase Database · checked Sep 30, 2026
2	Forvia Hella	Strong evidence	Lippstadt, GermanyHQ checked Sep 30, 2026	10001+	14,860 contacts →
	Strong evidence “FORVIA HELLA is a listed international automotive supplier.” Source: RevenueBase Database · checked Sep 30, 2026
3	Forvia	Indirect evidence	Nanterre, FranceHQ checked Sep 30, 2026	10001+	9,555 contacts →
	Indirect evidence “FORVIA comprises the complementary technology and industrial strengths of Faurecia and HELLA.” Source: RevenueBase Database · checked Sep 30, 2026
4	Automotive	Strong evidence	Appenzell, TürkiyeHQ checked Sep 30, 2026	1,001-5,000	6,948 contacts →
	Strong evidence “Supplier of interior components for the automotive and domestic industry.” Source: RevenueBase Database · checked Sep 30, 2026
5	Hyundai Mobis	Partial evidence	Seoul, South KoreaHQ checked Sep 30, 2026	10001+	6,522 contacts →
	Partial evidence “Hyundai MOBIS specializes in automotive technology.” Source: RevenueBase Database · checked Sep 30, 2026
6	Antolin	Partial evidence	Burgos, SpainHQ checked Sep 30, 2026	10001+	6,128 contacts →
	Partial evidence “Antolin is a full service supplier leader in the design, development and manufacture of automobile industry components, offering multi-technological solutions for modular interior…” Source: RevenueBase Database · checked Sep 30, 2026
7	IAC Group	Strong evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	5,634 contacts →
	Strong evidence “Headquartered in Luxembourg, International Automotive Components (IAC) Group is a leading global supplier of automotive components and systems, including instrument panels…” Source: RevenueBase Database · checked Sep 30, 2026
8	Yazaki North America	Partial evidence	Canton, MI, United StatesHQ checked Sep 30, 2026	10001+	5,183 contacts →
	Partial evidence “Yazaki is a global leader in the research, development and delivery of vehicle power and data solutions for automotive applications.” Source: RevenueBase Database · checked Sep 30, 2026
9	Varroc	Strong evidence	Aurangabad, IndiaHQ checked Sep 30, 2026	5,001-10,000	4,856 contacts →
	Strong evidence “Varroc Group is a global tier-1 automotive component manufacturer and supplier of exterior lighting systems, plastic and polymer components, electrical-electronics components, and…” Source: RevenueBase Database · checked Sep 30, 2026
10	Martinrea International	Indirect evidence	Vaughan, ON, CanadaHQ checked Sep 30, 2026	10001+	4,718 contacts →
	Indirect evidence “Martinrea International Inc.” Source: RevenueBase Database · checked Sep 30, 2026
11	Flex-N-Gate	Indirect evidence	Urbana, IL, United StatesHQ checked Sep 30, 2026	10001+	4,298 contacts →
	Indirect evidence “Starting with aftermarket parts in 1956 and moving into O.E.” Source: RevenueBase Database · checked Sep 30, 2026
12	TRIGO	Partial evidence	Nanterre, FranceHQ checked Sep 30, 2026	10001+	3,572 contacts →
	Partial evidence “QUALITY ALONG THE SUPPLY CHAIN Founded in 1997, TRIGO Group is a multinational company providing quality solutions for the automotive, aerospace and other transport industries.” Source: RevenueBase Database · checked Sep 30, 2026
13	Inteva Products	Strong evidence	Troy, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	3,302 contacts →
	Strong evidence “Inteva Products is a leading global automotive supplier known for delivering innovative, reliable, environmentally friendly products that enhance vehicle quality, safety, and…” Source: RevenueBase Database · checked Sep 30, 2026
14	PT Denso Indonesia	Strong evidence	Bekasi, IndonesiaHQ checked Sep 30, 2026	5,001-10,000	2,503 contacts →
	Strong evidence “DENSO is a leading supplier of advanced automotive technology, systems and components for major automakers.” Source: RevenueBase Database · checked Sep 30, 2026
15	Novares Group	Partial evidence	Vélizy-villacoublay, FranceHQ checked Sep 30, 2026	5,001-10,000	2,312 contacts →
	Partial evidence “About Novares: Based in France, Novares is a global supplier of plastic solutions that designs and manufactures complex components and systems that serve the future of the…” Source: RevenueBase Database · checked Sep 30, 2026
16	Keyloop	Partial evidence	Reading, United KingdomHQ checked Sep 30, 2026	1,001-5,000	2,294 contacts →
	Partial evidence “Nearly 50 years, automotive retail has run on Keyloop.” Source: RevenueBase Database · checked Sep 30, 2026
17	Sumitomo Electric Wiring Systems, INC	Indirect evidence	Bowling Green, KY, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,244 contacts →
	Indirect evidence “There is power in a trusted brand.” Source: RevenueBase Database · checked Sep 30, 2026
18	Sodecia	Indirect evidence	Porto, PortugalHQ checked Sep 30, 2026	5,001-10,000	1,923 contacts →
	Indirect evidence “With a global footprint spanning Europe, North and South America, Asia, and Africa, Sodecia operates business units that partner with the world’s leading automakers to develop…” Source: RevenueBase Database · checked Sep 30, 2026
19	Rockman Industries	Partial evidence	New Delhi, IndiaHQ checked Sep 30, 2026	5,001-10,000	1,909 contacts →
	Partial evidence “Rockman Industries, the auto-components arm of the $6 billion Hero Group, is a leading manufacturer and supplier of aluminium die-casting components, machined and painted…” Source: RevenueBase Database · checked Sep 30, 2026
20	Minth Group	Partial evidence	台北, TaiwanHQ checked Sep 30, 2026	10001+	1,721 contacts →
	Partial evidence “Minth Group stands as a global leader in the manufacturing of exterior and structural automotive parts.” Source: RevenueBase Database · checked Sep 30, 2026
21	Napino Auto & Electronics LTD	Strong evidence	Gurgaon, IndiaHQ checked Sep 30, 2026	5,001-10,000	1,619 contacts →
	Strong evidence “Napino is one of India's leading supplier of automotive electronic products.” Source: RevenueBase Database · checked Sep 30, 2026
22	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
23	Autokiniton	Strong evidence	New Boston, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,437 contacts →
	Strong evidence “At AUTOKINITON, we’re more than just an automotive supplier, we’re the backbone of vehicle performance and safety.” Source: RevenueBase Database · checked Sep 30, 2026
24	Sharda Motor Industries LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 30, 2026	1,001-5,000	1,313 contacts →
	Indirect evidence “Founded in 1986, Sharda Motor Industries Ltd (SMIL) is an ISO 9001 certified auto-ancillary company with global aspirations.” Source: RevenueBase Database · checked Sep 30, 2026
25	Fiem Industries LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 30, 2026	5,001-10,000	1,266 contacts →
	Indirect evidence 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 supplier audit firms. 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 supplier audit firms.
Partial evidence: Its own public description names part of automotive supplier audit firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive supplier audit firms. 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 5,297 automotive supplier audit firms worldwide

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Automotive supplier audit firms worldwide at a glance

As of Sep 30, 2026

19.7%Verified-email coverage

51.1Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

2,125

11-50

1,539

51-200

802

201-500

358

501-1,000

172

1,001-5,000

171

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 supplier audit firms, 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.
Coverage: Every country. Country and city lists for automotive supplier audit firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “automotive supplier audit firms”. 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 supplier audit firms), 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 supplier audit firms, and records with no verified work email.
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, 53,265 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.

Automotive supplier audit firms by location

25 lists · largest first

Every Automotive supplier audit firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 supplier audit firms, 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 supplier audit firms are there worldwide?

RevenueBase identified 5,297 automotive supplier audit firms worldwide 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?

Lear Corporation, headquartered in Southfield, tops this list with the largest team on record.

Which country has the most automotive supplier audit firms?

The United States leads with 723 companies, followed by Germany (444) and Brazil (391). Every automotive supplier audit firms list by country and city is linked on this page.

Which city has the most automotive supplier audit firms?

Sao Paulo leads with 74 headquartered companies, followed by Istanbul (59) and Pune (50).

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 53,265 verified decision-maker contacts tracked across these 5,297 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.