US Automotive Auto Parts - PPC Market Share Analysis September 2025

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 14.2198530985
85.7801469015
14%

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 56
44
56%

Search Intent Distribution

Breakdown of search queries by their underlying goal.

Intent Distribution
Investigational 6%
Transactional 7%
Navigational 1%
Seasonal 0%
Local 1%
Problem Solving 32%

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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 18.19
advanceautoparts.com 18.14
partsgeek.com 6.11
napaonline.com 5.61
harborfreight.com 3.28
carparts.com 3.04
bumper.com 2.04
kbb.com 1.96
oreillyauto.com 1.72
etrailer.com 1.27
others 38.64
  • autozone.com - 18.19%
  • advanceautoparts.com - 18.14%
  • partsgeek.com - 6.11%
  • napaonline.com - 5.61%
  • harborfreight.com - 3.28%
  • carparts.com - 3.04%
  • bumper.com - 2.04%
  • kbb.com - 1.96%
  • oreillyauto.com - 1.72%
  • etrailer.com - 1.27%
  • others - 38.64%

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Advance Auto Parts and AutoZone dominate with 18.14% and 18.19% click share, respectively. Others hold a significant 38.64%, highlighting 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 autozone.com advanceautoparts.com napaonline.com partsgeek.com harborfreight.com carparts.com etrailer.com oreillyauto.com bumper.com summitracing.com
2025/09/01 13.93% 21.48% 1.58% 7.15% 3.26% 4.23% 1.51% 1.07% 0.8% 1.12%
2025/09/02 15.82% 21.45% 1.4% 5.87% 3.5% 2.95% 1.77% 1.19% 1.18% 1.02%
2025/09/03 22.47% 15.41% 2.87% 5.55% 4.33% 3.3% 1.5% 3.16% 0.74% 0.62%
2025/09/04 19.19% 18.48% 8.21% 4.2% 3.83% 2.51% 1.43% 3.55% 0.77% 0.95%
2025/09/05 21.88% 19.69% 3.31% 5.16% 3.81% 3.25% 1.11% 4.68% 0.78% 1.79%
2025/09/06 18.67% 22.63% 2.46% 7.39% 2.61% 3.23% 1.2% 1.84% 1.25% 1.27%
2025/09/07 17.23% 24.24% 2.66% 7.35% 2.5% 3.81% 1.16% 1.28% 1.12% 1%
2025/09/08 10.07% 22.54% 1.65% 7.44% 2.44% 4.13% 1.63% 1.39% 1.37% 1.19%
2025/09/09 17.74% 18.48% 3.22% 10.53% 2.15% 3.27% 1.38% 1.54% 1.6% 1.2%
2025/09/10 14.97% 17.11% 6.22% 8.17% 2.08% 3.04% 1.43% 1.37% 1.76% 1.19%
2025/09/11 14.41% 18.54% 6.47% 8% 1.99% 3.79% 0.91% 2.35% 1.53% 1.31%
2025/09/12 18.85% 17.53% 3.22% 6.96% 2.24% 3.58% 1.44% 1.08% 1.28% 1.26%
2025/09/13 13.76% 19.16% 6.24% 8.02% 1.97% 3.44% 1.38% 1.34% 1.73% 1.32%
2025/09/14 17.18% 22.18% 2.67% 7.55% 2.05% 4.19% 1.26% 1.28% 1.68% 1.19%
2025/09/15 20.54% 20.47% 2.71% 6.13% 2.9% 3.17% 1.55% 0.48% 1.21% 1.06%
2025/09/16 16.88% 18.79% 2.28% 8.28% 2.33% 4.04% 1.68% 0.48% 1.44% 0.97%
2025/09/17 27.69% 17.47% 7.41% 7.39% 0.85% 3.87% 0.81% 1.75% 0.98% 0.65%
2025/09/18 36.8% 18.2% 6.15% 5.49% 0.96% 2.47% 0.82% 1.44% 0.76% 0.84%
2025/09/19 20.57% 18.74% 6.89% 5.24% 3.09% 2.7% 1.11% 2.6% 1.23% 0.75%
2025/09/20 18.72% 15.92% 5.77% 6.24% 3.03% 3.16% 1.81% 2.07% 1.31% 0.77%
2025/09/21 13.68% 20.98% 2.2% 6.68% 4.53% 3.1% 1.77% 0.4% 1.34% 0.87%
2025/09/22 20.18% 18.79% 3.12% 5.47% 3.11% 2.86% 1.92% 2.28% 1.13% 0.77%
2025/09/23 12.97% 18.99% 2.58% 7.33% 3.4% 3.99% 1.81% 1.04% 1.4% 0.74%
2025/09/24 20.26% 16.13% 5.25% 5.84% 3.67% 3.41% 1.65% 1.63% 1.02% 0.66%
2025/09/25 16.5% 19.94% 5.35% 5% 4.52% 2.75% 1.28% 1.61% 0.71% 0.54%
2025/09/26 17.45% 13.55% 9.31% 6.24% 4.18% 3.01% 1.16% 1.04% 0.76% 0.6%
2025/09/27 14.52% 18.45% 7.12% 7.01% 3.65% 4.5% 1.46% 0.42% 1.33% 0.75%
2025/09/28 13.98% 16.67% 6.7% 6.43% 4.32% 3.66% 1.68% 0.53% 1.37% 0.81%
2025/09/29 18.82% 13.89% 4.88% 6.34% 5.16% 3.36% 1.65% 1.27% 1.1% 0.65%
2025/09/30 17.41% 15.08% 6.55% 5.63% 4.82% 2.6% 1.48% 1.25% 0.86% 0.47%
  • autozone.com
  • advanceautoparts.com
  • napaonline.com
  • partsgeek.com
  • harborfreight.com
  • carparts.com
  • etrailer.com
  • oreillyauto.com
  • bumper.com
  • summitracing.com

Copyright © Adthena. All rights reserved.

AutoZone’s PPC share peaked mid-month at 36.8%, while Advance Auto Parts maintained a steady presence. NapaOnline saw a significant rise on the 26th, reaching 9.31%. By month’s end, AutoZone led, with Advance Auto Parts closely trailing.

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
2025/09/01 2075
2025/09/02 2156
2025/09/03 2296
2025/09/04 2643
2025/09/05 2550
2025/09/06 2122
2025/09/07 2050
2025/09/08 2127
2025/09/09 2113
2025/09/10 2115
2025/09/11 2071
2025/09/12 2015
2025/09/13 1862
2025/09/14 1791
2025/09/15 1972
2025/09/16 1912
2025/09/17 1557
2025/09/18 1481
2025/09/19 2024
2025/09/20 2003
2025/09/21 2074
2025/09/22 2228
2025/09/23 2194
2025/09/24 2576
2025/09/25 2969
2025/09/26 2523
2025/09/27 2240
2025/09/28 2267
2025/09/29 2596
2025/09/30 2676

Copyright © Adthena. All rights reserved.

September saw a dynamic shift in distinct advertisers, starting at 2,075 and peaking at 2,969. Mid-month dips were followed by a strong finish at 2,676.

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
napaonline.com 1.73%
fleetpride.com 0.73%
harborfreight.com 0.67%
kbb.com 0.38%
tirerack.com 0.37%
summitracing.com -0.6%
autozone.com -0.61%
oreillyauto.com -0.82%
partsgeek.com -1.12%
advanceautoparts.com -2.31%

Copyright © Adthena. All rights reserved.

Napaonline.com surged with a 1.73% click share increase, while advanceautoparts.com faced a 2.31% 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 harborfreight.com partsgeek.com napaonline.com carparts.com bumper.com etrailer.com oreillyauto.com americantrucks.com
2025/09/01 10.12% 14.28% 4.65% 6.4% 1.12% 3.98% 1.41% 2.17% 1.43% 0.73%
2025/09/02 12.63% 14.4% 4.96% 5.06% 0.93% 2.93% 2.13% 2.41% 1.37% 1.07%
2025/09/03 15.53% 11.3% 6.5% 5.22% 1.77% 3.27% 1.27% 1.98% 3.61% 0.91%
2025/09/04 18.25% 11.99% 5.12% 3.67% 5.22% 2.29% 1.3% 1.83% 4.53% 1.24%
2025/09/05 18.32% 13.82% 5.21% 4.71% 2.51% 3.19% 1.37% 1.43% 5.17% 1.13%
2025/09/06 13.81% 15.72% 3.74% 7.42% 1.97% 3.5% 2.45% 1.59% 2.69% 1.38%
2025/09/07 12.67% 16.75% 3.64% 7.22% 1.75% 4.25% 2.08% 1.62% 1.42% 1.38%
2025/09/08 7.81% 14.54% 3.36% 7.16% 1.1% 4.27% 2.43% 2.07% 1.57% 2.27%
2025/09/09 12.75% 13.01% 3.06% 10.08% 2.15% 3.95% 2.92% 1.83% 1.95% 1.27%
2025/09/10 10.85% 12.21% 2.93% 8.34% 4.52% 3.45% 3.34% 1.82% 1.6% 1.25%
2025/09/11 11.12% 13.34% 2.89% 7.97% 4.62% 4.27% 2.62% 1.16% 2.44% 1.07%
2025/09/12 13.63% 12.83% 3.02% 7.37% 2.37% 4.15% 2.33% 1.87% 1.25% 1.33%
2025/09/13 10.76% 14.61% 2.73% 7.73% 4.76% 3.67% 3.34% 1.72% 1.3% 0.58%
2025/09/14 12.77% 17.08% 2.78% 7.62% 2.21% 4.6% 3.3% 1.56% 1.65% 0.62%
2025/09/15 14.57% 16.12% 3.85% 6.54% 2.35% 3.53% 2.49% 1.88% 0.54% 0.77%
2025/09/16 12.26% 14.38% 3.01% 7.96% 2.01% 4.45% 2.86% 1.94% 0.65% 1.56%
2025/09/17 19.88% 14.55% 1.23% 7.88% 6.94% 4.68% 2.42% 0.95% 2.61% 0.42%
2025/09/18 27.36% 16.4% 1.41% 7.17% 6.04% 2.68% 1.93% 1% 2.22% 0.87%
2025/09/19 14.93% 16.1% 3.74% 5.41% 5.28% 3.19% 2.73% 1.26% 2.95% 1.26%
2025/09/20 14.72% 12.08% 3.73% 5.96% 4.26% 3.36% 2.99% 2.02% 2.26% 1.36%
2025/09/21 11.56% 15.07% 5.45% 5.76% 1.87% 3.1% 3.15% 1.98% 0.56% 1.27%
2025/09/22 14.9% 13.8% 3.9% 5.06% 2.69% 3.11% 2.85% 2.2% 2.45% 0.96%
2025/09/23 10.24% 13.1% 4.05% 6.5% 2.1% 4.05% 3.35% 2.06% 1.17% 1.37%
2025/09/24 15.84% 11.79% 4.28% 5.24% 3.79% 3.65% 2.57% 1.86% 1.62% 1.29%
2025/09/25 14.43% 14.98% 4.88% 4.43% 3.39% 2.43% 1.68% 1.33% 1.77% 1.38%
2025/09/26 13.99% 10.88% 4.62% 5.4% 6.66% 2.81% 1.74% 1.2% 1.31% 1.51%
2025/09/27 12.15% 14.17% 4.24% 6.66% 4.94% 4.38% 3.35% 1.61% 0.54% 0.57%
2025/09/28 12.07% 12.45% 4.83% 5.98% 4.95% 3.59% 3.21% 1.81% 0.81% 1.19%
2025/09/29 15.73% 10.84% 5.92% 5.91% 3.69% 3.36% 2.62% 1.76% 1.44% 1.05%
2025/09/30 15.72% 12.63% 5.26% 5.07% 4.82% 2.42% 1.87% 1.53% 1.44% 1.04%
  • autozone.com
  • advanceautoparts.com
  • harborfreight.com
  • partsgeek.com
  • napaonline.com
  • carparts.com
  • bumper.com
  • etrailer.com
  • oreillyauto.com
  • americantrucks.com

Copyright © Adthena. All rights reserved.

Autozone’s impression share surged early September, peaking at 27.36% on the 18th. Advance Auto Parts maintained a steady presence, while Harbor Freight saw a late-month rise. The month concluded with Autozone leading, followed by Advance Auto Parts.

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 Parts® https://shop.advanceautoparts.com › auto-parts

    Shop Premium Auto Parts — Shop Online or Visit Your Local Advance Auto Parts® & Have a Team Member Help You Today.

  2. 2
    AutoZone Official Site https://www.autozone.com

    Shop In-Store or Online Now — Shop online or check store availability for the quality auto parts you need. Get started!

  3. 3
    Auto Parts by CarParts.com - Quality Parts, Priced Right https://www.carparts.com

    Over 1 million car parts at your fingertips. From collision, maintenance, and upgrades to accessories, CarParts.com offers top-quality auto parts at prices you can afford.

  4. 4
    NAPA Auto Parts® Official Site https://www.napaonline.com › anti-lock › brake-parts

    Shop NAPA Auto Parts® Online — Buy Online For In-Store Or Curbside Pickup, Ship To Home, Or Reserve Online & Pay In-Store

  5. 5
    Auto Parts at RockAuto https://www.rockauto.com

    Reliably Low Auto Part Prices — Your Choice of Quality. Reliably Low Price. Full Manufacturer Warranty. Fast Online Catalog. Professional-Mechanic Accurate. DIY-Easy.

Copyright © Adthena. All rights reserved.

Advance Auto Parts® emphasizes personalized service, inviting customers to shop online or visit stores for assistance. AutoZone highlights convenience, offering both online shopping and in-store availability. CarParts.com boasts a vast selection and affordability, while NAPA Auto Parts® focuses on flexible purchasing options. RockAuto stands out with low prices and a user-friendly catalog.

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