Aftermarket parts demand spans specialty equipment, replacement components, accessories, repair services, and vehicle-specific upgrades. In the United States, specialty-equipment sales reached $52.3 billion in 2023, while nearly 298 million motor vehicles were registered in 2024. These aftermarket parts statistics show how vehicle age, usage, product type, workforce size, and powertrain changes shape the market.
Contents
- U.S. aftermarket market size and sales
- Specialty-parts buyers and vehicle segments
- Vehicle age, registrations, and replacement demand
- Driving activity and parts-use intensity
- Parts manufacturing and repair workforce
- Aftermarket service establishments and workplace measures
- Powertrain transition and market outlook
U.S. aftermarket market size and sales
The specialty-equipment segment provides one of the clearest views of aftermarket parts spending. U.S. automotive specialty-equipment sales reached $52.3 billion in 2023, about 1% above 2022, according to SEMA’s “Automotive Specialty-Equipment Sales Grow to $52.3 Billion”. The sector’s 2023 total also exceeded $52 billion in SEMA’s State of the Industry report.
Sales were distributed across several product families:
| Specialty-equipment product family | U.S. sales in 2023 |
|---|---|
| Appearance and accessory products | $27.41 billion |
| Engine and performance products | $12.56 billion |
| Wheels, tires, and handling products | $12.38 billion |
| Alternative-power products, including EVs and hybrids | $2.5 billion |
The appearance and accessory category was the largest of these reported groups at $27.41 billion. Engine and performance products generated $12.56 billion, while wheels, tires, and handling products generated $12.38 billion. Alternative-power vehicles, including electric vehicles and hybrids, accounted for $2.5 billion of specialty-equipment sales in 2023. These figures are category sales, not a complete measure of every replacement part or repair transaction.
Broader retail data provides a different market boundary. U.S. motor-vehicle-and-parts-dealer sales totaled $1,657,455 million in 2025, up 3.9% from 2024, according to the Advance Monthly Retail Trade Survey for December 2025. Seasonally adjusted sales were $140,438 million in December 2025. Within that broad retail grouping, seasonally adjusted auto-parts, accessories, and tire-store sales were $10,961 million in November 2025.
The Monthly State Retail Sales report for March 2025 recorded a 10.3% year-over-year increase in U.S. motor-vehicle-and-parts-dealer retail sales for March 2025 versus March 2024. The reported margin of error was 1.1 percentage points, so the monthly result should be read as an estimate with that stated uncertainty.
Specialty-parts buyers and vehicle segments
The vehicle mix behind accessory and performance-parts sales is led by light trucks and utility vehicles. Pickups represented 32% of U.S. accessory and performance-parts sales in 2023. Crossover utility vehicles represented 15%, and sport utility vehicles represented 12%. Together, pickups, CUVs, and SUVs accounted for more than half of those sales, according to SEMA’s 2023 specialty-equipment market analysis.
The audience is not limited to enthusiast-only driving. Commuting was the use case for 58% of accessorized vehicles in the 2023 U.S. specialty-equipment market. Half of U.S. vehicle accessorizers were under age 40 in that analysis, and 58% also owned a powersports product. Those measures describe the profile of accessorizers in SEMA’s analysis; they do not represent every U.S. vehicle owner.
SEMA’s lifecycle analysis adds a product-mix view. In the 2024 report on national vehicle-lifecycle trends, accessory and appearance products made up 59% of aftermarket spending on Modern vehicles and 54% of aftermarket spending on Core vehicles. The report also measured Classic vehicles separately, with performance and handling products representing 63% of Classic-vehicle aftermarket spending. These lifecycle categories are analytical groupings from the report and should not be treated as model-year definitions supplied here.
Vehicle age, registrations, and replacement demand
An aging vehicle population creates a large installed base for maintenance, replacement, restoration, and upgrades. The average age of U.S. light vehicles reached an estimated 12.5 years on January 1, 2023, compared with 12.2 years on January 1, 2022, according to the Auto Care brief filed in Case 21-2348. SEMA’s 2024 lifecycle report put average U.S. vehicle age at 12.6 years.
Auto Care’s time series in “Key Aftermarket Issues and Impacts” shows average U.S. light-vehicle age rising from 11.4 years in 2014 to 12.6 years in January 2024. The January 2024 figure is the latest point in that cited time series; the older figures remain historical measurements and are not independently re-estimated here.
The registered fleet is also substantial. The Federal Highway Administration’s 2024 Table VM-1 recorded 297,525,836 registered motor vehicles in the United States in 2024, compared with 284,614,269 in 2023. The 2024 table included 130,065,097 passenger-car registrations and 155,485,844 light-truck registrations. These categories do not add up to the full registered-vehicle total because the table covers additional vehicle classes.
For aftermarket businesses, the combination of a 12.6-year average vehicle age and a fleet of nearly 298 million registered vehicles indicates a broad addressable vehicle base. The statistics establish fleet size and age, but they do not quantify how many vehicles received a specific repair or aftermarket part.
Driving activity and parts-use intensity
Vehicle use provides another context for replacement demand. U.S. public-road travel totaled 3,294,031 million vehicle-miles in 2024, according to FHWA Table VM-1. The same source reported average travel of 11,071 miles per registered U.S. vehicle in 2024.
For 2023, FHWA Table VM-202 recorded 3,246,817 million vehicle-miles of U.S. public-road travel and average travel of 11,408 miles per registered vehicle. The two annual averages use their respective reported year and should not be treated as a like-for-like trend calculation without accounting for the registration base and the source’s methodology.
Road type also matters to the distribution of driving. Urban roads carried 2,796,067 million vehicle-miles in the United States in 2023, while rural roads carried 450,750 million. Interstate roads accounted for 933,758 million urban vehicle-miles and 842,519 million rural vehicle-miles in the same FHWA table. These figures measure travel, not the number of parts consumed or the frequency of service visits.
Parts manufacturing and repair workforce
The manufacturing base behind aftermarket and replacement components employed 560,400 people in U.S. motor-vehicle-parts manufacturing in June 2025, not seasonally adjusted, according to BLS Table B-1b. Selected subsectors included 56,800 employees in gasoline-engine and engine-parts manufacturing, 59,900 in motor-vehicle electrical and electronic-equipment manufacturing, 77,700 in transmission and powertrain-parts manufacturing, and 81,800 in motor-vehicle metal stamping.
The largest listed group was steering, suspension, brake, seating, interior-trim, and other-parts manufacturing, with 284,200 employees in June 2025. These are employment counts for the reported industry categories, not a count of workers exclusively producing aftermarket-branded parts.
Installation and repair depend on a separate workforce. The BLS Repair and Maintenance: NAICS 811 profile counted 254,270 automotive service technicians and mechanics in the United States in 2025. Automotive body and related repairers numbered 109,530. The median annual wage for automotive service technicians and mechanics was $48,390 in 2025.
Aftermarket service establishments and workplace measures
Repair businesses operate within a large service industry. Seasonally adjusted employment in U.S. automotive repair and maintenance was 1,478,300 in August 2026, according to the BLS NAICS 811 profile. The same August 2026 profile reported a 6.5% unemployment rate for the automotive repair and maintenance industry.
In the first quarter of 2026, private-industry repair-and-maintenance establishments numbered 249,269. Government establishments were much fewer: 598 at the local level, 24 at the state level, and 40 at the federal level. Those counts distinguish establishment ownership and should not be combined with the private total as a measure of all possible aftermarket locations without considering the source’s definitions.
Workplace measures provide additional context. The repair-and-maintenance industry recorded 148 workplace fatalities in 2024 and 2.0 total recordable injury and illness cases per 100 full-time workers in 2024, according to the same BLS industry profile. These are industry-level safety measures, not risks assigned to a particular repair shop, part type, or vehicle segment.
Powertrain transition and market outlook
Alternative-power products already form a measurable specialty-equipment segment: SEMA recorded $2.5 billion in EV and hybrid accessory spending in 2023. At the same time, the broader vehicle fleet remains an aging, mixed-powertrain market. The EPA’s 50 Years of Automotive Trends report recorded U.S. light-duty vehicle fuel economy at 27.1 miles per gallon in 2023, compared with 13.1 mpg in 1975. The figures are separated by nearly five decades and describe fleet fuel economy, not aftermarket sales.
SEMA’s 2024 State of the Industry report projected U.S. new-vehicle sales to exceed 16 million in 2024. In its Fall 2023 industry survey about the 2024 outlook, 55% of automotive aftermarket manufacturers expected growth, and one-third reported double-digit growth over the prior year. These are a forecast and survey responses, respectively, rather than completed 2024 sales results.
The available evidence points to a market serving several vehicle lifecycles at once: accessory-led spending on newer Modern and Core vehicles, performance and handling demand among Classic vehicles, replacement needs across an average fleet age of 12.6 years, and a growing EV-and-hybrid accessory segment. The statistics do not establish a single forecast for total aftermarket-parts demand, but they do show why product category, vehicle age, usage, and powertrain should be separated when evaluating the market.