US Automotive Auto Parts - PPC Market Share Analysis March 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 25.5827005986
74.4172994014
25%

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 24
76
24%

Search Intent Distribution

Breakdown of search queries by their underlying goal.

Intent Distribution
Investigational 7%
Transactional 9%
Navigational 0%
Seasonal 0%
Local 3%
Problem Solving 7%

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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 42.3
advanceautoparts.com 20.12
partsgeek.com 4.94
harborfreight.com 2.31
carparts.com 2.23
kbb.com 2.13
summitracing.com 1.86
bumper.com 1.1
napaonline.com 0.67
ford.com 0.66
others 21.68
  • autozone.com - 42.3%
  • advanceautoparts.com - 20.12%
  • partsgeek.com - 4.94%
  • harborfreight.com - 2.31%
  • carparts.com - 2.23%
  • kbb.com - 2.13%
  • summitracing.com - 1.86%
  • bumper.com - 1.1%
  • napaonline.com - 0.67%
  • ford.com - 0.66%
  • others - 21.68%

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AutoZone leads with 42.3% click share, followed by ‘others’ at 21.68%. Advance Auto Parts holds 20.12%, while PartsGeek captures 4.94%.

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 autozone.com advanceautoparts.com partsgeek.com carparts.com bumper.com harborfreight.com peddle.com carmax.com kbb.com carcover.com
2026/03/01 17.17% 11.57% 5.78% 7.26% 2.89% 4% 2.06% 1.41% 1.51% 1.37%
2026/03/02 16.04% 12.24% 5.15% 3.5% 1.66% 4.01% 1.94% 1.27% 1.35% 1.91%
2026/03/03 17.49% 11.48% 5.38% 3.53% 3% 3.97% 1.95% 0.99% 1.31% 1.25%
2026/03/04 15.94% 10.65% 4.87% 4% 2.46% 4.45% 1.84% 1% 1.31% 1.53%
2026/03/05 16.49% 10.34% 3.87% 3.26% 3.03% 4.78% 2.1% 1.29% 1.16% 1.15%
2026/03/06 18.47% 10.33% 6.18% 3.22% 3.09% 3.11% 1.64% 1.03% 1.67% 1.55%
2026/03/07 12.11% 13.6% 6.91% 4.42% 4.5% 2.22% 2.36% 1.03% 2.03% 2.32%
2026/03/08 17.4% 11.89% 5.97% 3.72% 3.78% 2.07% 2.27% 2.13% 1.78% 1.02%
2026/03/09 12.5% 13.34% 5.58% 4.8% 4.21% 2.56% 1.93% 1.24% 1.66% 1.38%
2026/03/10 15.93% 12.02% 6.43% 5.21% 3.41% 2.08% 2.43% 1.25% 1.97% 1.09%
2026/03/11 21.53% 13.21% 4.08% 4.32% 3.21% 2.87% 2.22% 1.21% 1.3% 1.18%
2026/03/12 20.55% 11.33% 4.96% 3.84% 4% 2.89% 2.27% 1.56% 1.63% 1.08%
2026/03/13 21.36% 11.46% 5.07% 4.48% 4.46% 1.95% 1.62% 1.22% 1.23% 1.57%
2026/03/14 20.57% 12.41% 6.25% 4.39% 3.15% 2.63% 1.87% 1.22% 1.22% 1.9%
2026/03/15 19.77% 11.12% 6.52% 4.15% 2.29% 2.54% 2.29% 1.46% 1.22% 1.46%
2026/03/16 10.36% 10.68% 6.07% 5.59% 1.38% 2.94% 1.86% 1.58% 1.45% 1.77%
2026/03/17 17.49% 8.7% 4.49% 3.9% 0.67% 3.86% 1.54% 0.92% 0.71% 1.36%
2026/03/18 12.97% 11.22% 4.57% 3.44% 1.11% 3.57% 1.74% 1.33% 1.05% 0.96%
2026/03/19 14.29% 10.15% 5.52% 4.73% 2.24% 3.26% 1.89% 1.34% 2.02% 0.93%
2026/03/20 19.96% 11.43% 4.3% 4.01% 1.85% 2.55% 1.53% 1.47% 1.58% 1.71%
2026/03/21 18.49% 14.25% 5.01% 4.29% 3.13% 2.56% 2.06% 1.34% 1.39% 1.65%
2026/03/22 16.06% 13.46% 5.33% 4.77% 3.23% 3.31% 1.72% 1.77% 2.06% 1.43%
2026/03/23 12.91% 13.96% 5.15% 4.6% 4.36% 3.41% 1.41% 1.01% 1.18% 1.23%
2026/03/24 20.15% 11.89% 5.3% 3.76% 2.99% 3.57% 1.45% 1.01% 1.64% 1.74%
2026/03/25 12.57% 13.31% 4.89% 4.84% 4.68% 3.07% 2.18% 1.15% 1.55% 1.96%
2026/03/26 13.16% 15.73% 5.39% 5.17% 5.75% 3.71% 2.09% 1.85% 2.09% 0.98%
2026/03/27 20.88% 12.18% 4.66% 4.8% 4.17% 2.19% 2.07% 1.62% 2.12% 1.59%
2026/03/28 18.67% 12.4% 5.07% 5.08% 5.34% 4.6% 2.63% 1.51% 1.51% 1.63%
2026/03/29 19.32% 11.27% 5.84% 5.17% 5.06% 2.89% 2.15% 1.87% 2.4% 1.61%
2026/03/30 20.98% 13.35% 6.67% 4.89% 3.83% 1.62% 2.06% 1.13% 1.82% 1.7%
2026/03/31 19.55% 10.79% 6.27% 5.61% 4.67% 2.53% 1.85% 1.38% 1.27% 0.88%
  • autozone.com
  • advanceautoparts.com
  • partsgeek.com
  • carparts.com
  • bumper.com
  • harborfreight.com
  • peddle.com
  • carmax.com
  • kbb.com
  • carcover.com

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Autozone led March with fluctuating spend, peaking mid-month. Advance Auto Parts maintained steady growth, while PartsGeek saw consistent low values. CarParts and Bumper showed volatility. March ended with Autozone dominating.

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
2026/03/01 1671
2026/03/02 1809
2026/03/03 1883
2026/03/04 1943
2026/03/05 1870
2026/03/06 1708
2026/03/07 1433
2026/03/08 1462
2026/03/09 1538
2026/03/10 1474
2026/03/11 1448
2026/03/12 1496
2026/03/13 1451
2026/03/14 1472
2026/03/15 1544
2026/03/16 1673
2026/03/17 1943
2026/03/18 1710
2026/03/19 1583
2026/03/20 1484
2026/03/21 1361
2026/03/22 1441
2026/03/23 1553
2026/03/24 1374
2026/03/25 1400
2026/03/26 1263
2026/03/27 1261
2026/03/28 1253
2026/03/29 1276
2026/03/30 1263
2026/03/31 1287

Copyright © Adthena. All rights reserved.

March began with 1,671 advertisers, peaking at 1,943 on the 4th and 17th. A decline followed, ending the month at 1,287.

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
advanceautoparts.com 0.82%
autozone.com 0.5%
kbb.com 0.27%
carparts.com 0.17%
bumper.com 0.17%
grainger.com -0.1%
harborfreight.com -0.11%
oreillyauto.com -0.17%
batteriesplus.com -0.25%
summitracing.com -0.27%

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Advanceautoparts.com surged with a 0.82 increase, while summitracing.com dropped by 0.27. Autozone.com gained 0.5, contrasting batteriesplus.com’s 0.25 decline.

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 autozone.com advanceautoparts.com partsgeek.com harborfreight.com carparts.com bumper.com carmax.com cargurus.com kbb.com oreillyauto.com
2026/03/01 25.36% 12.84% 5.9% 7.07% 3.14% 1.49% 1.82% 0.96% 1.04% 2.35%
2026/03/02 22.29% 14.12% 5.46% 6.62% 2.36% 0.86% 1.46% 1.02% 0.98% 1.96%
2026/03/03 23.87% 12.62% 4.98% 6.5% 2.44% 1.53% 1.12% 0.91% 0.94% 0.98%
2026/03/04 21.68% 11.97% 4.52% 7.61% 2.82% 1.27% 1.21% 1.2% 0.95% 0.81%
2026/03/05 22.9% 11.37% 3.83% 7.76% 2.56% 1.43% 1.53% 0.93% 0.83% 1.55%
2026/03/06 27.25% 11.57% 6.34% 5.35% 2.44% 1.78% 1.4% 1.27% 1.36% 2.17%
2026/03/07 19.98% 14.96% 8.02% 4.46% 3.91% 2.84% 1.28% 0.88% 1.97% 0.76%
2026/03/08 25.43% 12.56% 6.43% 3.87% 2.97% 2.36% 3% 1.75% 1.45% 2.37%
2026/03/09 18.83% 14.42% 6.19% 4.66% 3.89% 2.55% 1.72% 1.24% 1.45% 1.02%
2026/03/10 22.73% 13.16% 7.02% 3.76% 4.24% 2.03% 1.45% 1.44% 1.69% 0.69%
2026/03/11 30.41% 14.58% 4.46% 5.01% 3.18% 1.85% 1.41% 1.21% 1% 0.8%
2026/03/12 29.53% 11.96% 5.28% 4.67% 3.14% 2.2% 1.85% 1.49% 1.23% 1.54%
2026/03/13 29.89% 12.44% 5.5% 3.56% 3.32% 2.53% 1.68% 1.33% 0.96% 1.49%
2026/03/14 30.3% 12.97% 6.55% 4.6% 3.58% 1.77% 1.84% 1.38% 0.86% 1.11%
2026/03/15 26.96% 11.95% 6.73% 4.56% 2.96% 1.32% 1.93% 1.3% 0.88% 1.72%
2026/03/16 15.16% 12.06% 6.59% 5.81% 4.22% 0.81% 2.48% 1.48% 1.08% 1.4%
2026/03/17 22.7% 8.63% 4.31% 6.82% 2.63% 0.31% 0.99% 1.03% 0.47% 1.24%
2026/03/18 19.01% 11.56% 4.98% 6.04% 2.89% 0.62% 1.91% 1.64% 0.76% 1.12%
2026/03/19 20.08% 10.73% 5.37% 5.84% 3.73% 1.33% 1.81% 1.55% 1.57% 1.14%
2026/03/20 28.34% 11.59% 4.37% 3.87% 2.84% 0.99% 2.1% 1.47% 1.21% 0.65%
2026/03/21 26.6% 15.68% 5.31% 4.57% 3.26% 1.83% 2.05% 1.6% 1.16% 0.45%
2026/03/22 22.12% 14.06% 5.93% 5.67% 3.89% 1.88% 2.34% 1.99% 1.62% 1.02%
2026/03/23 19.14% 15.11% 5.96% 5.88% 3.34% 2.29% 1.36% 1.32% 0.89% 1.47%
2026/03/24 28.59% 13.06% 5.27% 6.01% 2.78% 1.62% 1.26% 1.19% 1.22% 1.19%
2026/03/25 19.19% 14.95% 4.94% 5.9% 3.29% 2.73% 1.65% 1.33% 1.28% 0.7%
2026/03/26 19.69% 15.36% 5.3% 6.89% 3.76% 3.1% 2.6% 1.8% 1.54% 0.78%
2026/03/27 31.27% 12.66% 5.2% 3.89% 3.38% 2.37% 2.14% 1.19% 1.6% 1.43%
2026/03/28 27.86% 12.54% 4.91% 8.17% 3.67% 3.07% 2.1% 1.47% 1.18% 0.73%
2026/03/29 27.6% 11.93% 6.17% 5.59% 3.66% 2.78% 2.85% 1.65% 1.89% 1.69%
2026/03/30 30.63% 12.98% 7.27% 2.97% 3.69% 2.2% 1.48% 1.26% 1.48% 0.7%
2026/03/31 28.8% 10.89% 6.55% 4.49% 4.29% 2.62% 1.71% 1.02% 1.02% 0.46%
  • autozone.com
  • advanceautoparts.com
  • partsgeek.com
  • harborfreight.com
  • carparts.com
  • bumper.com
  • carmax.com
  • cargurus.com
  • kbb.com
  • oreillyauto.com

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AutoZone’s impression share fluctuated, peaking at 31.27% on March 27. Advance Auto Parts saw a steady presence, while PartsGeek and Harbor Freight experienced ups and downs. CarParts and Bumper showed modest gains. March ended with AutoZone leading.

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
    Advance Auto Official Site - Shop Online & Pickup In Store https://shop.advanceautoparts.com › auto-parts

    Shop Our Wide Selection of High-Quality Parts Made For Your Vehicle.

  2. 2
    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. Shop online or check store availability for the quality auto parts you need. Get started! Types: Batteries, Oil.

  3. 3
    O'Reilly Auto Parts - Auto Parts & Supplies Nearby https://www.oreillyauto.com

    Find the repair parts you need when you shop O'Reilly Auto Parts in-store and online.

  4. 4
    Auto Parts at RockAuto https://www.rockauto.com

    Reliably Low Auto Part Prices — Fast Online Catalog. Professional-Mechanic Accurate. DIY-Easy. Auto Parts for Your Vehicle at Reliably Low Prices.

  5. 5
    Summit Racing Equipment https://www.summitracing.com

    Automotive Parts & Tools — Parts for cars, trucks, SUV's, motorcycles, ATV's, boats & more. Low prices. Four giant distribution centers to get parts to you fast. Big selection. Order today! New Summit Racing Rewards.

Copyright © Adthena. All rights reserved.

In the competitive landscape of auto parts, Advance Auto Parts emphasizes convenience with online shopping and in-store pickup. AutoZone highlights accessibility, offering both online and in-store options. O’Reilly Auto Parts focuses on availability, while RockAuto promises low prices and ease for DIY enthusiasts. Summit Racing stands out with a vast selection and fast delivery.

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