Company lists · Data refreshed September 2026

Top 25 Automotive engineering services based in the United States

Name: Automotive engineering 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 21, 2026 610 companies tracked

RevenueBase identified 610 automotive engineering services headquartered in the United States as of September 2026 and tracks 14,316 professional contacts across them, including 4,412 with verified work emails. Los Angeles is the largest hub.

This list covers automotive engineering 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 21, 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 21, 2026 86% judged on-target in blind review

610Companies

14,316Contacts tracked

4,412Verified emails

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The 25 largest automotive engineering services based in the United States

Ranked by team size

Top 25 of 610 automotive engineering services based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to automotive engineering 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	Caresoft Global	Strong evidence	Livonia, MI, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,860 contacts →
	Strong evidence “We are a global engineering solutions company working closely with major Automotive, On-Highway, Agriculture & Construction Equipment Manufacturers and Tier-I Suppliers to solve…” Source: RevenueBase Database · checked Sep 21, 2026
2	Exponent	Partial evidence	Menlo Park, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,560 contacts →
	Partial evidence “In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…” Source: RevenueBase Database · checked Sep 21, 2026
3	ADAC	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 21, 2026	1,001-5,000	636 contacts →
	Partial evidence “ADAC is a supplier of engineered products to the world automotive industry.” Source: RevenueBase Database · checked Sep 21, 2026
4	ATC	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 21, 2026	1,001-5,000	504 contacts →
	Indirect evidence “ATC Reman is a world leader in remanufacturing solutions for light, medium, and heavy-duty vehicles, providing remanufacturing solutions for powertrain and drivetrain products…” Source: RevenueBase Database · checked Sep 21, 2026
5	Calspan	Partial evidence	Buffalo, NY, United StatesHQ checked Sep 21, 2026	501-1,000	356 contacts →
	Partial evidence “Calspan is an industry-leading research and testing partner to the great innovators of the aerospace and automotive industry.” Source: RevenueBase Database · checked Sep 21, 2026
6	Hyde Engineering Consulting	Partial evidence	Louisville, CO, United StatesHQ checked Sep 21, 2026	201-500	253 contacts →
	Partial evidence “Hyde E+C is an international engineering consulting firm that helps companies operate more efficiently, get products to market more quickly, meet regulatory requirements more…” Source: RevenueBase Database · checked Sep 21, 2026
7	Kett Engineering Corporation	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	501-1,000	250 contacts →
	Strong 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 21, 2026
8	ATA Engineering	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	201-500	233 contacts →
	Partial evidence “ATA Engineering, Inc.(ATA) provides innovative solutions through analysis- and test-driven design by focusing on the engineering needs of manufacturers in addressing their cost…” Source: RevenueBase Database · checked Sep 21, 2026
9	Burke Porter, An Ascential Technologies Brand	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 21, 2026	201-500	223 contacts →
	Partial evidence “Building on its history of leadership in the automotive industry, Burke Porter is now an Ascential Technologies company.” Source: RevenueBase Database · checked Sep 21, 2026
10	Agilis Engineering, INC	Partial evidence	Palm Beach Gardens, FL, United StatesHQ checked Sep 21, 2026	201-500	217 contacts →
	Partial evidence “Agilis is a proven engineering team relentlessly dedicated to advancing gas turbine engine performance.” Source: RevenueBase Database · checked Sep 21, 2026
11	LHP Engineering Solutions	Partial evidence	Columbus, IN, United StatesHQ checked Sep 21, 2026	501-1,000	207 contacts →
	Partial evidence “LHP is the thought leader, innovator and solution provider for the next generation of automotive functional safety and security challenges.” Source: RevenueBase Database · checked Sep 21, 2026
12	Triz Engineering Solutions	Partial evidence	Highland Park, IL, United StatesHQ checked Sep 21, 2026	201-500	203 contacts →
	Partial evidence “Triz Engineering Solutions provides engineering to commercial vehicle OEMs, supporting the development, integration, and launch of full or partial vehicle systems and platforms.” Source: RevenueBase Database · checked Sep 21, 2026
13	AVL In North America	Indirect evidence	Plymouth, MI, United StatesHQ checked Sep 21, 2026	501-1,000	198 contacts →
	Indirect evidence “AVL North America Inc: Established in 1994 for AVL to serve its North American clients directly, AVL North America has a team of ~550 people and has technical centers in Ann…” Source: RevenueBase Database · checked Sep 21, 2026
14	Thielsch Engineering	Indirect evidence	Cranston, RI, United StatesHQ checked Sep 21, 2026	501-1,000	175 contacts →
	Indirect evidence “Thielsch, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
15	Ryzen Solutions	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	201-500	169 contacts →
	Indirect evidence “Since Ryzen Solutions has become a trusted provider to Silicon Valley’s growing product development community.” Source: RevenueBase Database · checked Sep 21, 2026
16	Mclaren Engineering	Partial evidence	Livonia, MI, United StatesHQ checked Sep 21, 2026	201-500	148 contacts →
	Partial evidence “McLaren Engineering is Linamar’s leading-edge technology and product development center for our mobility segment.” Source: RevenueBase Database · checked Sep 21, 2026
17	Prefix Corporation	Partial evidence	Rochester Hills, MI, United StatesHQ checked Sep 21, 2026	201-500	133 contacts →
	Partial evidence “Michigan-based Prefix Corporation is a recognized leader in the creation of prototype designs, mock-ups, and full scale concept vehicles for the automotive and aviation industries.” Source: RevenueBase Database · checked Sep 21, 2026
18	RPA Engineering	Partial evidence	Wyomissing, PA, United StatesHQ checked Sep 21, 2026	51-200	116 contacts →
	Partial evidence “RPA Engineering is a professional engineering consulting firm offering mechanical, electrical, structural, and automations systems engineering discipline services, including…” Source: RevenueBase Database · checked Sep 21, 2026
19	Distek Integration, INC	Indirect evidence	Cedar Falls, IA, United StatesHQ checked Sep 21, 2026	51-200	105 contacts →
	Indirect evidence “DISTek establishes a team of specialized engineers tailored to solve your projects’ unique challenges.” Source: RevenueBase Database · checked Sep 21, 2026
20	Millbrook	Partial evidence	Livonia, MI, United StatesHQ checked Sep 21, 2026	501-1,000	103 contacts →
	Partial evidence “Millbrook provides vehicle test and validation services and systems to customers in the automotive, transport, tyre, petrochemical and defence industries.” Source: RevenueBase Database · checked Sep 21, 2026
21	Pentangle Tech Services P5 Group	Partial evidence	Farmington Hills, MI, United StatesHQ checked Sep 21, 2026	51-200	100 contacts →
	Partial evidence “Pentangle Tech Services is the fastest-growing Engineering Services Firm.” Source: RevenueBase Database · checked Sep 21, 2026
22	Encorus Group	Indirect evidence	Springville, NY, United StatesHQ checked Sep 21, 2026	51-200	97 contacts →
	Indirect evidence “Encorus Group, founded in 1996, employs over 100 engineers, architects, technicians, inspectors, and support staff across New York State.” Source: RevenueBase Database · checked Sep 21, 2026
23	Aisin Technical Center Of America, INC	Indirect evidence	Northville, MI, United StatesHQ checked Sep 21, 2026	51-200	93 contacts →
	Indirect evidence “As the first technical center established by Aisin Seiki outside of Japan, ATC-A leads Aisin's product development for the North, Central and South American marketplace, providing…” Source: RevenueBase Database · checked Sep 21, 2026
24	Otscon INC	Partial evidence	Columbia, MO, United StatesHQ checked Sep 21, 2026	51-200	84 contacts →
	Partial evidence “Otscon Inc is an Automotive company located in 50 N Rangeline Rd, Columbia, Missouri, United States.” Source: RevenueBase Database · checked Sep 21, 2026
25	BGM Engineering INC	Indirect evidence	Shelby Twp., MI, United StatesHQ checked Sep 21, 2026	51-200	78 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 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 engineering 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 engineering services.
Partial evidence: Its own public description names part of automotive engineering services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive engineering 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 610 automotive engineering services based in the United States

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Automotive engineering services based in the United States at a glance

As of Sep 21, 2026

30.8%Verified-email coverage

23.5Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · Los Angeles

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

358

11-50

159

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 610 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 engineering 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 engineering 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 engineering 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 engineering 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, 4,412 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 21, 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 engineering 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 engineering services are there based in the United States?

RevenueBase identified 610 automotive engineering 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?

Caresoft Global, headquartered in Livonia, tops this list with the largest team on record.

Which city has the most automotive engineering services?

Los Angeles leads with 10 headquartered companies, followed by Troy (10) and Detroit (9).

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 4,412 verified decision-maker contacts tracked across these 610 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 21, 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.