US Automotive Auto Parts - PPC Market Share Analysis May 2026

Leveraging Adthena’s Whole Market View, this analysis explores recent trends in Google Ads for the US Auto Parts category from the last month. Our Data Analyst, Ask Arlo provides commentary on key findings.

Auto Parts – US

Google AI Overview visibility for Automotive Auto Parts US

See how often AIOs appear and how search intent is distributed across buying signals.

AIO Frequency

How often a Google AI overview appears on search terms relevant to this category.

Frequency Percentage
Frequency 24.7815234346
75.2184765654
24%

Complex Query Frequency

A complex query is a longer, more detailed search that often contains multiple keywords, specific conditions, or multi-part questions.

Frequency Percentage
Frequency 26
74
26%

Search Intent Distribution

Breakdown of search queries by their underlying goal.

Intent Distribution
Investigational 7%
Transactional 8%
Navigational 1%
Seasonal 0%
Local 2%
Problem Solving 9%

Copyright © Adthena. All rights reserved.

Market Exposure

Share of Clicks for top 10 US Automotive Auto Parts brands

Here are the Top 10 competitors in the industry by Share of Clicks for the last month.

Share of Clicks - Last month
Share of Clicks - Last month
Domain Share of clicks
autozone.com 28.57
advanceautoparts.com 18.14
napaonline.com 7.38
partsgeek.com 5.93
harborfreight.com 3.2
carparts.com 2.43
summitracing.com 1.69
kbb.com 1.59
oreillyauto.com 1.41
etrailer.com 0.94
others 28.72
  • autozone.com - 28.57%
  • advanceautoparts.com - 18.14%
  • napaonline.com - 7.38%
  • partsgeek.com - 5.93%
  • harborfreight.com - 3.2%
  • carparts.com - 2.43%
  • summitracing.com - 1.69%
  • kbb.com - 1.59%
  • oreillyauto.com - 1.41%
  • etrailer.com - 0.94%
  • others - 28.72%

Copyright © Adthena. All rights reserved.

AutoZone leads with 28.57% click share, closely followed by Advance Auto Parts at 18.14%. Others collectively hold 28.72%, showcasing diverse competition.

Market Exposure

Share of Spend for the top 10 US Automotive Auto Parts brands

Curious about your market position? Here you can see the Top 10 competitors in the industry by Share of Spend for the last month. 

Share of Spend - Last Month
Share of Spend - Last Month
Date advanceautoparts.com autozone.com partsgeek.com napaonline.com harborfreight.com carparts.com oreillyauto.com etrailer.com peddle.com realtruck.com
2026/05/01 12.15% 14.41% 5.38% 3.39% 2.8% 7.27% 0.85% 0.55% 1.56% 1.2%
2026/05/02 16.5% 13.03% 4.7% 3.78% 2.51% 6.19% 1.37% 0.54% 1.82% 1.51%
2026/05/03 16.94% 15.47% 4.87% 3.83% 1.96% 6.89% 1.23% 0.57% 2.73% 0.46%
2026/05/04 17.16% 14.77% 6.18% 3.81% 1.63% 7.4% 1.28% 0.58% 2.45% 0.14%
2026/05/05 12.51% 13.67% 5.3% 3.81% 1.32% 5.63% 1.29% 0.7% 2.49% 0.73%
2026/05/06 11.39% 13.6% 5.65% 5.04% 1.64% 6.11% 0.7% 0.83% 2.33% 0.99%
2026/05/07 10.05% 17.25% 5.88% 5.66% 1.78% 5.68% 1.12% 0.72% 2.57% 0.47%
2026/05/08 10.3% 15.83% 5.94% 4.34% 1.72% 6.08% 1.09% 0.59% 1.76% 0.78%
2026/05/09 9.78% 13.75% 5.56% 5.47% 2.07% 6.94% 1.45% 0.57% 2.75% 1.03%
2026/05/10 13.9% 12.01% 6.81% 4.23% 1.68% 5.75% 1.81% 0.72% 2.45% 0.34%
2026/05/11 8.85% 11.72% 5.02% 2.05% 3.82% 3.79% 2.32% 1.58% 1.17% 1.39%
2026/05/12 9.25% 9.76% 4.97% 2.21% 4.05% 3.46% 3.27% 1.65% 1.12% 1.35%
2026/05/13 9.69% 11.22% 5.22% 3.77% 3.25% 4.67% 2.4% 1.58% 1.63% 1.37%
2026/05/14 10.91% 8.7% 5.89% 4.49% 2.6% 4.16% 2.39% 1.46% 1.57% 1.7%
2026/05/15 10.27% 15.76% 5.93% 4.32% 1.71% 6.07% 1.09% 0.59% 1.75% 0.78%
2026/05/16 10.92% 10.33% 4.18% 2.71% 5.05% 3.53% 1.21% 1.78% 1.62% 1.96%
2026/05/17 10.59% 8.62% 4.74% 2.76% 4.74% 4% 1.13% 1.84% 1.52% 1.71%
2026/05/18 8.55% 12.12% 4.51% 3.46% 3.75% 4.65% 1.46% 1.63% 1.58% 1.81%
2026/05/19 9.2% 10.06% 4.42% 2.9% 3.9% 3.28% 1.82% 1.87% 1.27% 2.21%
2026/05/20 9.74% 10.24% 4.18% 3.15% 4.07% 3.93% 1.37% 1.76% 1.43% 1.89%
2026/05/21 10.04% 11.69% 4.7% 3.85% 3.46% 3.75% 1.25% 1.78% 1.43% 1.65%
2026/05/22 11.06% 11.02% 3.76% 4.24% 3.7% 3.64% 1.31% 1.74% 1.16% 1.6%
2026/05/23 11.77% 11.2% 4.23% 2.75% 3.63% 3.96% 0.67% 1.99% 0.44% 1.48%
2026/05/24 9.97% 12.48% 4.83% 0.7% 3.52% 4.02% 1.07% 2.08% 1.22% 1.65%
2026/05/25 9.42% 12.1% 4.89% 5.09% 3.43% 4.06% 0.95% 1.63% 1.28% 1.23%
2026/05/26 9.67% 9.28% 5.93% 4.52% 3.65% 4.21% 2.04% 1.43% 1.43% 1.21%
2026/05/27 11.95% 0% 5.88% 4.23% 4.12% 4.2% 1.28% 1.99% 1.44% 1.78%
2026/05/28 11.04% 0% 5.37% 3.69% 3.97% 3.74% 2.92% 2.16% 1.64% 1.33%
2026/05/29 11.23% 1.31% 5.06% 3.98% 5.13% 3.9% 2.64% 1.96% 1.76% 1.86%
2026/05/30 10.57% 7.56% 6.18% 4.33% 4.49% 3.85% 2.08% 1.83% 1.86% 1.76%
2026/05/31 12.23% 8.86% 6.49% 4.14% 3.62% 3.46% 3.14% 1.87% 1.49% 1.11%
  • advanceautoparts.com
  • autozone.com
  • partsgeek.com
  • napaonline.com
  • harborfreight.com
  • carparts.com
  • oreillyauto.com
  • etrailer.com
  • peddle.com
  • realtruck.com

Copyright © Adthena. All rights reserved.

Advance Auto Parts started May strong, peaking at 17.16% on the 4th, but ended at 12.23%. AutoZone saw a sharp drop mid-month, finishing at 8.86%. PartsGeek maintained stability, closing at 6.49%.

Market Exposure

Competitor Count for US Automotive Auto Parts

Ever wondered how many competitors you’re up against in your industry? Well look no further, here we can see the number of advertisers bidding over the last month. 

Competitor Count - Last month
Competitor Count - Last month
Date Competitor Count
2026/05/01 1281
2026/05/02 1211
2026/05/03 1243
2026/05/04 1337
2026/05/05 1467
2026/05/06 1424
2026/05/07 1428
2026/05/08 1467
2026/05/09 1362
2026/05/10 1421
2026/05/11 2122
2026/05/12 2148
2026/05/13 1690
2026/05/14 1786
2026/05/15 1467
2026/05/16 1841
2026/05/17 1889
2026/05/18 1864
2026/05/19 1723
2026/05/20 1730
2026/05/21 1814
2026/05/22 1857
2026/05/23 1823
2026/05/24 1932
2026/05/25 2221
2026/05/26 2222
2026/05/27 2061
2026/05/28 2060
2026/05/29 1970
2026/05/30 1988
2026/05/31 1963

Copyright © Adthena. All rights reserved.

May saw a dynamic shift in advertisers, starting at 1,281 and peaking at 2,222. The month concluded with 1,963 advertisers, reflecting a vibrant competitive landscape.

Campaign Efficiency

Market Loss & Market Gains for US Automotive Auto Parts

Here we’re looking at the Top 10 biggest industry movers by market share gains and losses for the last 30 days.

Market Loss & Market Gains - Last month
Market Loss & Market Gains - Last month
Name Market Trend
harborfreight.com 1.08%
partsgeek.com 1.06%
etrailer.com 0.53%
lowes.com 0.37%
batteriesplus.com 0.36%
cargurus.com -0.15%
advanceautoparts.com -0.18%
carparts.com -0.22%
bumper.com -0.55%
autozone.com -9.97%

Copyright © Adthena. All rights reserved.

Autozone.com saw a significant drop of 9.97% in click share, while harborfreight.com and partsgeek.com experienced increases of 1.08% and 1.06%, respectively.

Campaign Efficiency

US Automotive Auto Parts Share of Impressions

Take a look at the Top 10 competitors in the industry by Share of Impressions over the last month.

Date advanceautoparts.com autozone.com partsgeek.com harborfreight.com oreillyauto.com napaonline.com carparts.com etrailer.com batteriesplus.com grainger.com
2026/05/01 14.68% 22.1% 5.64% 4.83% 1.85% 3.76% 4.93% 0.69% 0.36% 0.94%
2026/05/02 17.26% 21.58% 4.95% 4.54% 2.86% 3.99% 4.41% 0.68% 0.29% 0%
2026/05/03 16.77% 24.32% 5.25% 3.65% 3.09% 5.07% 5.05% 0.66% 0.38% 0%
2026/05/04 16.18% 23.94% 6.63% 2.84% 3.3% 4.69% 4.73% 0.65% 0.27% 0.64%
2026/05/05 14.18% 22.85% 5.62% 2.59% 3.55% 4.25% 4.38% 0.77% 0.56% 2.06%
2026/05/06 15.03% 22.26% 6.28% 3.11% 1.65% 4.41% 4.3% 0.91% 0.61% 1.75%
2026/05/07 11.81% 26.41% 6.03% 3.34% 2.61% 5.77% 3.82% 0.76% 0.36% 1.56%
2026/05/08 13.06% 24% 5.79% 3.3% 1.88% 5.23% 4.49% 0.66% 0.65% 1.14%
2026/05/09 12.84% 21.3% 5.9% 3.7% 1.67% 8.15% 4.89% 0.69% 0.46% 0%
2026/05/10 16.86% 17.35% 7.37% 3.2% 3.65% 4.95% 4.05% 0.82% 0.28% 0%
2026/05/11 9.93% 17.01% 4.89% 6.11% 3.89% 3.08% 2.57% 1.81% 1.06% 2.81%
2026/05/12 11.07% 14.04% 4.79% 6.66% 5.21% 2.56% 2.44% 1.87% 1.25% 2.49%
2026/05/13 12.57% 16.93% 5.31% 5.72% 5.05% 3.87% 2.93% 1.71% 0.74% 2.31%
2026/05/14 14.28% 13.4% 6.11% 4.66% 3.79% 5.06% 2.97% 1.65% 1.13% 2.23%
2026/05/15 13.04% 23.98% 5.82% 3.3% 1.89% 5.23% 4.52% 0.66% 0.65% 1.14%
2026/05/16 13.76% 15.83% 3.89% 8.37% 1.79% 2.95% 2.45% 2% 2.1% 0%
2026/05/17 13.61% 13.55% 4.36% 7.78% 1.79% 2.86% 2.78% 1.97% 2% 0%
2026/05/18 11.39% 18.28% 4.32% 6.01% 1.93% 3.77% 2.96% 1.89% 1.76% 2.09%
2026/05/19 11.46% 15.2% 4.33% 6.56% 3.55% 2.86% 2.11% 2.12% 2.12% 2.67%
2026/05/20 12.38% 14.82% 3.98% 6.7% 2.1% 3.48% 2.45% 2.04% 1.88% 2.65%
2026/05/21 12.37% 16.95% 4.7% 5.74% 2.03% 4.07% 2.4% 2.06% 1.8% 1.75%
2026/05/22 13.36% 16.29% 3.64% 6.41% 1.72% 4.4% 2.37% 1.98% 1.73% 1.75%
2026/05/23 15.55% 16.59% 3.84% 5.88% 1.04% 3.13% 2.57% 2.17% 1.89% 0%
2026/05/24 12.7% 17.76% 4.84% 5.8% 1.29% 0.91% 2.82% 2.39% 2.2% 0%
2026/05/25 10.73% 17.05% 4.09% 5.24% 1.69% 5.46% 2.61% 1.84% 2.14% 1.13%
2026/05/26 11.79% 13.09% 5.79% 5.72% 2.58% 5.07% 3.1% 1.67% 1.67% 1.93%
2026/05/27 15.23% 0% 5.97% 7.01% 2.07% 5.1% 3.15% 2.36% 1.56% 1.69%
2026/05/28 14.33% 0% 5.41% 6.82% 4.83% 4.47% 2.61% 2.52% 1.01% 2.04%
2026/05/29 14.81% 1.67% 5.14% 8.65% 4.09% 4.98% 2.82% 2.44% 1.03% 1.73%
2026/05/30 13.62% 10.48% 6.95% 7.38% 3.1% 4.36% 2.85% 2.17% 0.08% 0%
2026/05/31 14.7% 12.53% 7.25% 5.79% 4.16% 3.81% 2.47% 2.07% 0.19% 0%
  • advanceautoparts.com
  • autozone.com
  • partsgeek.com
  • harborfreight.com
  • oreillyauto.com
  • napaonline.com
  • carparts.com
  • etrailer.com
  • batteriesplus.com
  • grainger.com

Copyright © Adthena. All rights reserved.

In May 2026, AutoZone led with fluctuating impressions, peaking early, then dipping. Advance Auto Parts showed a steady mid-month rise. PartsGeek and Harbor Freight had consistent shares, while Grainger and Batteries Plus saw sporadic visibility.

Campaign Efficiency

Google Text Ad Copy Insights & Creative Trends for US Automotive Auto Parts

Ever wondered how your rivals’ ads are doing? Here we can see the top-performing ads in the industry over the last month.

Google Text Ad Copy Insights & Creative Trends for US Automotive Auto Parts - Last month
  1. 1
    A-Premium Auto Parts | Quality Replacement Parts | Guaranteed fit https://www.a-premium.com

    Shop A-Premium auto parts for reliable replacement parts, OEM-quality components, and fast U.S. shipping. Find quality car parts engineered to fit your vehicle.

  2. 2
    Advance Auto Official Site https://shop.advanceautoparts.com › auto-parts

    Shop Online & Pickup In Store — Shop Our Wide Selection of High-Quality Parts Made For Your Vehicle.

  3. 3
    AutoZone Official Site https://www.autozone.com

    Shop In-Store or Online Now — Visit your local store or shop AutoZone.com for the quality parts & accessories you need. AutoZone has everything you need to get the job done. Find the Right Parts. Same-Day Store Pickup.

  4. 4
    NAPA Auto Parts® Official Site https://www.napaonline.com

    Buy Online & Pick Up In-Store — Buy Online For In-Store Or Curbside Pickup, Ship To Home, Or Reserve Online & Pay In-Store

  5. 5
    O’Reilly Auto Parts https://www.oreillyauto.com › truck › accessories

    Find Auto Parts Near You — Shop Now To Get the Right Auto Parts, Tools and Supplies For Your Truck At O'Reilly! Shop parts...

Copyright © Adthena. All rights reserved.

In the competitive landscape of auto parts, A-Premium stands out with its promise of OEM-quality and guaranteed fit, while Advance Auto Parts emphasizes convenience with online shopping and in-store pickup. AutoZone offers versatility with both online and in-store options, ensuring customers find the right parts swiftly. NAPA Auto Parts highlights flexibility with multiple pickup and delivery options, and O’Reilly Auto Parts focuses on accessibility, ensuring customers find the right tools and supplies nearby. Each advertiser uniquely positions itself to cater to diverse customer needs in the auto parts market.

Frequently Asked Questions

Customer Success Stories

Get the full picture

See this data specific to your brand performance

The data on this page is just a sample of the billions of data points we hold at Adthena. The insights generated by Ask Arlo, leverage real-time GenAI to answer questions about your search data.

Our search consultants can introduce you to Whole Market View data that is specific to your organization, based on the size of the relevant search term and competitor universe, and the locations that you need monitoring.

Related reports