Auto parts industry statistics show a large, multi-channel market measured through retailer sales, professional programs, store networks, distribution infrastructure and company profitability. The figures below cover named companies and segments, primarily in 2024, with fiscal and calendar periods kept explicit; they are not a complete census of the global industry.
Key Auto Parts Industry Statistics
The most broadly useful figures include:
- AutoZone reported $18.490 billion in consolidated sales in fiscal 2024 across its consolidated operations.
- O’Reilly reported $16.71 billion in sales in 2024 for its consolidated business.
- LKQ reported $14.355 billion in total segment revenue in 2024 across its reportable segments.
- Genuine Parts Company reported $23.49 billion in consolidated sales in 2024, including industrial operations.
- Advance Auto Parts reported $9.1 billion in net sales for the year ended December 28, 2024.
- AutoZone operated 7,353 stores at August 31, 2024 across the United States, Mexico and Brazil.
- O’Reilly operated 6,265 stores in 48 U.S. states plus Puerto Rico on December 31, 2024.
- Genuine Parts Company had 10,008 automotive locations on December 31, 2024 across North America, Europe and Australasia.
- Advance Auto Parts reported 4,788 total stores on December 28, 2024 across its defined company footprint.
- O’Reilly operated 31 distribution centers on December 31, 2024.
- O’Reilly distribution centers stocked more than 153,000 SKUs in 2024.
- Genuine Parts Company operated 162 automotive distribution centers on December 31, 2024.
- AutoZone domestic commercial sales reached $5.113 billion for the trailing four quarters ended May 10, 2025.
- AutoZone total auto parts sales reached $18.545 billion for the trailing four quarters ended May 10, 2025 across the United States, Mexico and Brazil.
- O’Reilly’s comparable-store sales increased 2.9% in 2024 for U.S. stores open at least one year under its company-defined measure.
- O’Reilly’s operating income was 19.5% of sales in 2024 on a consolidated basis.
- LKQ Wholesale-North America’s segment EBITDA margin was 16.6% in 2024.
- Genuine Parts Company’s free cash flow was $684 million in 2024, defined by the company as cash from operations less capital expenditures.
Contents
- Auto parts industry scale and leading retailer sales
- Auto parts industry revenue trends
- Auto parts store counts and geographic reach
- Distribution centers, inventory and product breadth
- Professional, commercial and DIY auto parts sales
- Auto parts profitability, cash flow and operating indicators
Auto Parts Industry Scale and Leading Retailer Sales
The available company disclosures provide a useful view of scale, but the measures are not interchangeable. Some are consolidated company sales, some are segment revenue, and Genuine Parts Company includes industrial operations in its consolidated figure.
| Company or segment | Reported 2024 sales or revenue | Geography and definition |
|---|---|---|
| AutoZone | $18.490 billion | Consolidated; fiscal year ended August 31, 2024 |
| O’Reilly | $16.71 billion | Consolidated; year ended December 31, 2024 |
| LKQ | $14.355 billion | Total reportable segments; year ended December 31, 2024 |
| Genuine Parts Company | $23.49 billion | Consolidated, including industrial; 2024 |
| Advance Auto Parts | $9.1 billion | Consolidated net sales; year ended December 28, 2024 |
Sources: AutoZone 2024 Form 10-K, O’Reilly 2024 Form 10-K, LKQ 2024 Form 10-K, Genuine Parts Company 2024 Form 10-K, and Advance Auto Parts 2024 Form 10-K.
AutoZone’s Auto Parts Stores segment generated $18.151 billion in fiscal-2024 net sales, compared with $18.490 billion for the consolidated company. That segment measure is closer to an automotive retail view, but it remains company-specific rather than an industry total.
Auto Parts Industry Revenue Trends Across Major Companies
Revenue trends differ by company, reporting calendar and business mix. AutoZone’s Auto Parts Stores net sales rose from $15.963 billion in fiscal 2022 to $17.145 billion in fiscal 2023, then to $18.151 billion in fiscal 2024 (AutoZone 2024 Form 10-K).
O’Reilly reported a $896 million increase in 2024 sales from 2023, representing 6% year-over-year growth. Its comparable-store sales increased 7.9% in 2023 and 2.9% in 2024 for U.S. stores open at least one year; the company-defined measure excludes specified sales categories (O’Reilly 2024 Form 10-K).
LKQ’s Wholesale-North America parts-and-services revenue was $5.465 billion in 2024, up $491 million or 9.9% from 2023. The segment’s total revenue presentation was $5.763 billion, which includes other and intersegment revenue (LKQ 2024 Form 10-K).
Other LKQ segment figures show the breadth of its operations: 2024 third-party revenue was $6.407 billion for LKQ Europe, $1.654 billion for LKQ Specialty and $532 million for LKQ Self Service. These are segment figures reported by LKQ, not a unified aftermarket market estimate.
Genuine Parts Company sales increased from $16.54 billion in 2020 to $18.90 billion in 2021, then reached $22.10 billion in 2022 and $23.09 billion in 2023. These consolidated figures include industrial operations (Genuine Parts Company 2024 Form 10-K).
Advance Auto Parts reported a $114.7 million decline in 2024 net sales from 2023, equal to a reported 1.2% decrease. The figure is consolidated and company-reported for the year ended December 28, 2024 (Advance Auto Parts 2024 Form 10-K).
Auto Parts Store Counts, Geographic Reach and Network Expansion
Store counts describe company footprints at specific dates, not the number of stores in the whole industry. The geographic mix also matters when comparing a U.S.-centered network with a multinational automotive network.
| Network | Locations at stated date | Geography |
|---|---|---|
| AutoZone | 6,432 U.S.; 794 Mexico; 127 Brazil | August 31, 2024 |
| O’Reilly | 6,265 U.S./Puerto Rico; 87 Mexico; 26 Canada | December 31, 2024 |
| Genuine Parts automotive | 10,008 total locations | North America, Europe and Australasia; December 31, 2024 |
| Advance Auto Parts | 4,788 total stores | Primarily U.S., with Canada, Puerto Rico and U.S. Virgin Islands; December 28, 2024 |
Sources: AutoZone 2024 Form 10-K, O’Reilly 2024 Form 10-K, Genuine Parts Company 2024 Form 10-K, and Advance Auto Parts 2024 Form 10-K.
AutoZone’s fiscal-year-end total was 7,353 stores across the three named countries. O’Reilly reported 6,265 stores in 48 U.S. states plus Puerto Rico, 87 in Mexico and 26 in Canada at December 31, 2024.
Genuine Parts Company’s automotive network included 3,622 company-owned stores and 6,224 independently owned automotive stores on December 31, 2024, with 41 net new automotive stores added during 2024. Its total automotive-location count includes both ownership types.
Advance Auto Parts reported 4,507 company-operated stores, including 316 hubs, and separately reported 934 independently owned Carquest-branded stores served at December 28, 2024. The 934 stores are served independents, not necessarily company-owned locations.
Distribution Centers, Inventory and Product Breadth in Auto Parts Data
Distribution infrastructure indicates how retailers support store availability and professional customers, while SKU counts describe assortment rather than unique parts across the industry.
O’Reilly operated 31 distribution centers representing approximately 13.1 million operating square feet on December 31, 2024. Those centers stocked more than 153,000 SKUs in 2024 (O’Reilly 2024 Form 10-K).
Genuine Parts Company operated 162 automotive distribution centers on December 31, 2024: 75 in North America, 73 in Europe and 14 in Australasia (Genuine Parts Company 2024 Form 10-K).
Advance Auto Parts locations averaged approximately 8,000 square feet in 2024, and its stores carried approximately 23,600 SKUs. Both are company-described estimates, and product mix varies by store market (Advance Auto Parts 2024 Form 10-K).
Genuine Parts Company’s automotive network had 6,818 locations in North America, 2,615 in Europe and 575 in Australasia in 2024. These are automotive network locations, not the company’s full global location count.
Professional, Commercial and DIY Auto Parts Sales Statistics
The available disclosures distinguish professional and commercial activity from overall auto parts sales, but they do not provide a single industry-wide DIY-versus-professional split.
AutoZone had commercial sales programs in 5,898 domestic stores at fiscal year-end August 31, 2024. For the trailing four quarters ended May 10, 2025, domestic commercial sales were $5.113 billion, up 8.3% year over year (AutoZone 2024 Form 10-K).
In that same trailing-four-quarter period, AutoZone total auto parts sales were $18.545 billion, up 5.1%, across its U.S., Mexico and Brazil auto parts operations. The trailing period differs from the fiscal-year periods used in many other figures.
O’Reilly had approximately 810 full-time sales staff dedicated solely to professional service providers in 2024. This is a staffing measure, not a count of professional customers or a professional revenue share (O’Reilly 2024 Form 10-K).
Auto Parts Industry Profitability, Cash Flow and Operating Indicators
Profitability measures are company- or segment-specific and should not be treated as industry averages. The definitions also differ: operating income, net income, EBITDA, adjusted EPS and free cash flow are not interchangeable outcomes.
| Measure | 2024 result | Scope |
|---|---|---|
| O’Reilly gross profit | 51.2% of sales | Consolidated; cost of goods sold was 48.8% including warehouse and distribution expenses |
| O’Reilly operating income | 19.5% of sales | Consolidated |
| O’Reilly net income | 14.3% of sales | Consolidated |
| LKQ Wholesale-North America gross margin | 43.6% | Segment |
| LKQ Wholesale-North America EBITDA | $959 million; 16.6% margin | Segment EBITDA, not GAAP net income |
Sources: O’Reilly 2024 Form 10-K and LKQ 2024 Form 10-K.
Genuine Parts Company reported $8.16 adjusted diluted EPS and $684 million in free cash flow in 2024. The free-cash-flow figure is derived under the company’s definition of cash from operations minus capital expenditures and includes industrial operations (Genuine Parts Company 2024 Form 10-K).
Genuine Parts Company paid a $4.00 per-share dividend in 2024, and its dividend per share increased 5.3% from the prior year. These are shareholder-return measures rather than direct measures of auto parts demand or operating efficiency.
The company supported more than 63,000 teammates and operated in 17 countries in 2024. Those totals include automotive and industrial operations, so they should not be interpreted as automotive-only employment or geographic coverage.