Publish Date: September 2026
Updated Tariff & Recession Risk Analysis and Forecasts
The Auto Parts Manufacturing Market Report covers the $289.1 billion industry which produces components, systems, and accessories for vehicle assembly and aftermarket applications spanning mechanical, electronic, structural, and interior elements. Competitive structure encompasses global tier-one suppliers alongside specialized manufacturers addressing particular component categories or technology segments. Market requirements increasingly emphasize light-weighting supporting fuel efficiency, electronic integration enabling advanced functionality, cost competitiveness supporting platform economics, and increasingly specialized technologies addressing emerging vehicle requirements including electrification. Manufacturers face challenges balancing product engineering, manufacturing efficiency, quality management systems, and significant tariff considerations directly affecting global supply chain strategies. Industry leaders differentiate through advanced engineering optimizing component performance, manufacturing excellence ensuring quality and cost competitiveness, global footprint supporting multiple markets, and increasingly system integration capabilities beyond individual components in a sector where both technical capabilities and manufacturing efficiency drive supplier selection decisions.
Auto Parts Manufacturing Industry Definition
Auto Parts Manufacturing produces components, systems, and accessories for vehicle assembly and replacement markets. Companies design and build specialized parts meeting precise specifications for vehicle manufacturers and aftermarket distribution channels. Manufacturing processes include metal forming, plastic molding, precision machining, electronic assembly, and specialized production techniques appropriate for each component category. These businesses create essential components enabling vehicle assembly and maintenance. The industry continuously improves manufacturing precision, material performance, durability, and increasingly, integration of electronic functionality while developing enhanced materials, manufacturing techniques, and specialized designs that optimize component performance, weight reduction, and reliability for evolving vehicle requirements.
NAICS Code: 3363
Total # of Companies: 3,872
Total # of Factories / Facilities: 4,777
Industry Employees: 605,191
Market Size: $289.1 billion
TARIFF IMPACT (Summer 2025 – Download Report for Updated Analysis)
This report has in-depth analysis on the recent US tariff changes on material costs, quantifying import dependencies, tariff exposure rates, and key source countries for the auto parts manufacturing sector.
Estimated Tariff Cost: $18.4 billion
Relative Tariff Impact: SEVERE
Auto Parts Manufacturing Report Format
The 2026 U.S. Auto Parts Manufacturing Market Report is 63 pages of deep insights into the trends, dynamics, and forecasts shaping the industry. This market report is utilized by professionals to gain a in-depth understanding of the sector for business strategy, planning, forecasting, benchmarking, industry analysis, valuations, identifying organizational inefficiencies, financial analysis, and more.
The report has over 100 industry statistical data sets with historicals (2017-2025), trend analysis, and forecasts for 2026 and the next 5 years. The report includes revenue & cost trends, in-depth OPEX analysis on 26 categories, extensive financial analysis, forecasts, inventory statistics, composition of balance sheets, company segmentation analysis, top 50 companies analysis, material costs benchmarks, profitability metrics, state statistics, plant productivity benchmarks, workforce composition, inflation statistics, wage analysis, revenue per employee trends, and much more.
Below are a few page images from the report and check out the table of contents for a complete overview.
Report Table of Contents
Evaluate the table of contents to appreciate why thousands of professionals, bankers, consultants, accountants, and other executives rely on Kentley Insights for data-rich industry insights.
For this report, the core data is sourced from comprehensive business, operational, and economic surveys conducted by government and private institutions and filled out by a statistically significant number of companies in the auto parts manufacturing sector. Our analysts develop the forecasts utilizing econometric models based on historical statistical analysis, industry trends and dynamics, macroeconomic analysis & forecasts.
1-2 – Market Report Overview & Contents
3 – Market Overview
– Data Sources & Methodology
– Sector Definition & Examples
– Market Commentary
4 – Report Synopsis – Revenue & Growth
5 – Report Synopsis – Costs & Profitability
SECTION ONE
REVENUE & GROWTH
7 – Market Size Details
– Industry Revenues, Companies, & Facilities
– Analysis 2017-2025
– 2026 & 2030 Forecasts
8 – Growth Benchmarks
– Sales per Company and Plant
– Analysis 2017-2025
– 2026 & 2030 Forecasts
9 – Product Lines Revenue
10 – BCG Matrix – Income vs. Revenue Growth
11 – Total Industry Sales by Month & Year (2021-2025)
12 – Inventory Value by Month & Year (2021-2025)
13 – Months of Inventory (2021-2025)
14 – Sector Revenue by Segments
– Business Concentration, Size, & Structure
15 – Market Size by State
– Market Size and Rankings
16 – Market Size as a % of State GDP
17 – Sales as a % of State Manufacturing
18 – Market Segmentation by Business Size
19 – Market Segmentation by Business Size
– Business Size Segments – 1-4, 5-9, 10-20, 21-50, 51-100, 101-250, & 250+ employees
– Companies, Facilities, Sales, Employees & Payroll
20 – Segmentation by Concentration (Top 50 Companies)
– Concentration Segments – Top 4, 5-8, 9-20, & 21-50 companies
– Companies, Facilities, Sales, Employees & Payroll
21 – Market Share of Top 50 Companies
22 – Subsector Market Share of Top 50 Companies
23 – Segmentation by Business Structure
– Business Structure Segments – C-Corporations, S-Corporations, Partnerships, & Sole Proprietorships
– Companies, Facilities, Sales, Employees & Payroll
24 – Revenue per Company by State
25 – Revenue per Company by Segments
26 – Revenue per Facility by State
27 – Revenue per Facility by Segment
28 – Subsector Market Size & Growth
29 – Subsector Sales per Company & Plant
30 – 5-Year Consolidation Analysis
31 – Employment Consolidation Analysis
32 – Subsector Consolidation Analysis
– Number of Companies & Facilities
33 – Subsector Consolidation Analysis
– Facilities & Employees per Company
COST, CAPITAL & FINANCIALS
35 – Profitability & Financial Ratio Analysis
Page 36 – Balance Sheet Metrics
– Assets and Liabilities indexed to industry revenue at 100
– 16 Current & Non-Current Assets Categories
– 15 Short-term, Long-term Liabilities, & Net Worth
37 – OPEX
– Industry OPEX Analysis
– 2017-2025 Trends, 2026 & 2030 Forecasts
38 – OPEX by Company & Plant
– OPEX per Company & Plant
– 2017-2025 Trends, 2026 & 2030 Forecasts
Page 39 – OPEX Detail
– 6 Employee Expense Categories
– 8 Cost of Material Categories
– 6 Buildings and Equipment Categories
– 8 Other Operating Expense Categories
-Inventory Breakdown: finished goods, work-in-progress, materials and supplies
40 – Production Material Costs & Tariff Analysis
– Top Production Material Costs Breakdown
– Industry & Material Tariff Analysis – % of costs, import %, tariff costs, source countries
41 – Producer Pricing Index
– 2017-2025 Trends, 2026 & 2030 Forecasts
– Monthly PPI Figures for the Past 4 Years
42 – Plant Utilization & Hours
– Plant Utilization Rate
– Plant Operational Hours per Week
– 2022-2025 Historical Figures by Quarter
43 – Reasons for Non-Full Production
– 7 Categories Quarterly Survey Results for Past 2 Years
44 – Productivity & Employment
– Revenue per Employee
– Total Number of Employees
– Employees per Company
– 2017-2025 Trends, 2026 & 2030 Forecasts
45 – Employee Productivity by Segments
46 – Employee Productivity by State
47 –Subsector Sales & Payroll per Employee
48 – Payroll
– Payroll per Employee, Company, & Plant
– 2017-2025 Trends, 2026 & 2030 Forecasts
49 – Payroll per Company by Segments
50 – Payroll per Plant by Segments
51 – Payroll per Employee by Segments
52 – Payroll per Employee by State
53 – Employee Composition
– % of Employees for 27 Job Categories
54 – Job Categorization Pay Ranges
– Pay Bands – Bottom 10% & 25%, Mean, Top 25% & 10%
55 – Top 20 Jobs Breakdown
56 – Top 20 Jobs Pay
– Pay Bands
57 – Employees per Company by Segments
58 – Employees per Plant by Segments
59 – Facilities per Company by Segments
60 – Total Employment by State
61 – Population to Every Employee by State
62 – Employees per Facility by State
63 – Overview of Kentley Insights
Download a Sample Report
Below is a free sample report download. The 2026 Auto Parts Manufacturing Market Report has the same layout and data sets as the sample report.
Product Lines, Materials, and Jobs Covered in Report
PRODUCT LINES
Motor vehicle transmission and power train parts manufacturing
Motor vehicle gasoline engine and engine parts manufacturing
Motor vehicle electrical and electronic equipment manufacturing
Motor vehicle steering and suspension components (except spring) manufacturing
Motor vehicle brake system manufacturing
MATERIAL COST CATEGORIES
Materials, ingredients, containers, and supplies, nsk
Cost of all other materials and components, parts, containers, and supplies consumed
Other engine equipment (including turbochargers, injection fuel pumps, machined engine blocks, etc.)
Motor vehicle transmission and power train parts
Steel sheet, steel strip, and tin mill products
Motor vehicle seating and interior trim
Misc. fabricated metal products (excluding hardware, containers, screw machine, bearing components, castings, forgings, and wire)
Motor vehicle electrical and electronic equipment
Iron and steel castings
Aluminum and aluminum-base alloy castings
Misc. iron, steel, and ferroalloy ingot, shapes, and forms (excluding castings, forgings, bars, structural, wire, sheet, strip)
Metal forgings
Automotive stampings (including body parts, hubcaps, fenders, etc.)
Plastics products (including packaging, foam products, film, sheet, rod, tube, fabricated shapes, bottles, etc.)
Metal bolts, nuts, screws, washers, rivets, and other screw machine products
Thermoplastic and thermosetting resins and plastics materials
Steel bars (including concrete reinforcing bars), bar shapes, and plate (excluding castings, forgings, and fabricated)
Air-conditioning and warm air heating equipment and commercial and industrial refrigeration equipment
Nonferrous metal shapes, forms, sheet, strip, powder, and wire (excluding castings / forgings), excluding aluminum and copper
Other electronic components, including crystals, filters, LCD screens, transducers, mechanical switches, microwave, etc.
INDUSTRY JOBS ANALYZED
Machine Tool Cutting Setters, Operators, and Tenders, Metal and Plastic
Engine and Other Machine Assemblers
Inspectors, Testers, Sorters, Samplers, and Weighers
First-Line Supervisors of Production and Operating Workers
Laborers and Material Movers, Hand
Machinists
Welding, Soldering, and Brazing Workers
Multiple Machine Tool Setters, Operators, and Tenders, Metal and Plastic
Industrial Engineers, Including Health and Safety
Electrical, Electronics, and Electromechanical Assemblers
Industrial Machinery Installation, Repair, and Maintenance Workers
Molders and Molding Machine Setters, Operators, and Tenders, Metal and Plastic
Miscellaneous Production Workers
Computer Control Programmers and Operators
Mechanical Engineers
Tool and Die Makers
Maintenance and Repair Workers, General
Engineering Technicians, Except Drafters
Industrial Truck and Tractor Operators
Shipping, Receiving, and Traffic Clerks
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