Google Ads for auto parts stores
LocaliQ's 2026 automotive benchmarks have a row for auto parts and accessories: $2.80 a click, 26.16% of clicks converting and $19.11 per conversion, the lowest cost per conversion in the report. Most of those advertisers are local parts stores, so for an online store the bigger lever is fitment: titles and attributes that name the year, make, model and part number a shopper typed.
Auto parts cost per click and conversion
| Category | Data period | Cost per click | Click-through rate | Conversion rate | Cost per conversion |
|---|---|---|---|---|---|
| Auto Parts & Accessories[1] | Apr 2025 to Jun 2026 | $2.80 | 8.11% | 26.16% | $19.11 |
| Tire Dealer[1] | Apr 2025 to Jun 2026 | $3.53 | 5.52% | 12.95% | $22.42 |
| All automotive[1] | Apr 2025 to Jun 2026 | $3.49 | 6.60% | 9.21% | $33.12 |
These rows come from LocaliQ's automotive report, whose advertisers are mostly local dealers, parts stores and service shops.[1] A national online parts store competes with large retailers on the same searches and may see a higher cost per purchase than this table shows.
What moves ROAS for auto parts
- Fitment accuracy. A part listed for the wrong vehicle sells, then comes back. Returns on heavy parts erase the margin.
- Part-number search. Shoppers who type an OEM or aftermarket part number already know what they need.
- Catalog size. Parts catalogs can run to tens of thousands of SKUs, so most budget should go to the groups that sell and the rest should sit on a low target.
- Price comparison. Shopping shows the same part from several sellers, and price and stock status decide most clicks.
- Accessories. Floor mats, lighting and roof racks carry better margins than replacement parts and suit Demand Gen.
Break-even ROAS for a sample parts store
A made-up online store sells brake kits and suspension parts with a $160 average order and a 35% gross margin.
$160 average order, 35% gross margin
At the benchmark the first order clears break-even easily, but that figure includes calls to local stores. For the online store, the useful ceiling is the $56.00 CAC: as long as the cost per purchase stays under it, Google pays. Track returns by part category, since a high return rate on one group can wipe out its ROAS.
Run your own margin through the ROAS calculator.
Campaign mix for an auto parts store
With a big catalog, the feed and its custom labels decide where the money goes. Search handles part numbers and vehicle-specific queries.
| Campaign | Built from | Notes |
|---|---|---|
| Performance Max (feed) | Listing groups by part category and margin tier | The main sales campaign. Use custom labels for best sellers so the long tail doesn't spread the budget thin. |
| Standard Shopping, catalog | The whole catalog on a low target | Catches long-tail part searches cheaply and shows the search terms behind each sale. |
| Search, brand | Store name, store plus part category | Returning DIYers and shops. Kept separate so it doesn't inflate other campaigns. |
| Search, part number and fitment | Part numbers, year plus make plus model plus part | Dynamic Search Ads or exact match on top SKUs, sent to the part page with fitment confirmed. |
| Demand Gen | Accessory install videos and vehicle-specific images | For higher-margin accessories once the parts campaigns are profitable. Judge it on new customers. |
Feed and title tips for auto parts
Merchant Center allows 150 characters, and shoppers usually see the first 70 or fewer, so put the part type and the vehicle up front.[2] Submit GTINs where parts have them; products with a GTIN submitted without one may have limited visibility.[3]
- Write the part type, then the year range, make and model: "Front Brake Pads for 2018-2022 Honda Accord".
- Add the brand and part number after the vehicle, and submit the part number in the MPN attribute.
- State position and side where it applies: front, rear, driver side, passenger side.
- Say OEM or aftermarket, and the material or grade (ceramic pads, stainless lines).
- Use custom labels for margin and best sellers so campaigns can bid on them.
Product title examples
Up to 150 characters; shoppers usually see the first 70 or fewer[2]
- Brake pads: Front Ceramic Brake Pads for 2018-2022 Honda Accord, Low Dust, Hardware Kit Included, Part BP-118498
- Shocks: Rear Shock Absorbers Pair for 2015-2020 Ford F-150 4WD, Gas Charged, Direct Fit, Part SA-220793
- Accessory: All-Weather Floor Mats for 2021-2025 Toyota RAV4, Front and Rear Set, Custom Fit, Black87
Search keywords for an auto parts store
Vehicle and part-number searches are where sales happen. Replace these with the vehicles and parts you sell most.
Vehicle plus part
2019 honda accord front brake padsf150 rear shocksrav4 all weather floor mats
Part number
[oem part number][aftermarket part number][brand] bp-1184
Upgrade
ceramic brake padslift kit for tacomaled headlight bulbs h11
Brand
[store name][store name] brakes[store name] coupon code
Negative keywords for auto parts stores
Repair and salvage searches look like parts searches. Block them in Search and Standard Shopping, adding plurals and synonyms, since negatives skip close variants.[5]
junkyardsalvagepull a partusedmechanic near merepair shoplabor costhow much to replacerecalldiagrammanualfreejobsrentalinsurance
Ad copy examples
Responsive search ad assets for the sample store, inside 30 characters per headline and 90 per description.[6] Use your real fitment guarantee and return policy.
Vehicle plus part: brakes
Headlines (up to 30 characters)
- Accord Front Brake Pads23
- Fits 2018 to 2022 Accord24
- Ceramic, Low Dust17
- Fitment Guaranteed18
- Hardware Kit Included21
Descriptions (up to 90 characters)
- Ceramic front pads made for 2018-2022 Accords. Enter your VIN to confirm the fit.81
- Wrong part for your car? Return it and we'll swap it for the right one at no charge.84
Accessories: floor mats
Headlines (up to 30 characters)
- RAV4 All-Weather Mats21
- Laser-Measured Custom Fit25
- Front and Rear Set18
- Holds Snow, Mud and Spills26
- Shop Mats by Vehicle20
Descriptions (up to 90 characters)
- Custom-fit floor mats for 2021-2025 RAV4 with raised edges that hold mud and slush.83
- Pick your year, make and model and see only the mats and liners that fit your car.82
Auto parts seasons and budgets
Parts demand follows the weather and the calendar. Spring brings project season for enthusiasts and suspension and brake work after winter, summer lifts cooling-system and AC parts, and fall and winter move batteries, wiper blades, winter tires and floor liners.
Raise budgets for the part groups each season favors and leave the rest of the catalog alone. For a short sale, a seasonality adjustment tells Smart Bidding to expect a higher conversion rate; Google recommends them for 1 to 7 day events.[4]
How RunAds runs Google Ads for auto parts stores
What the agent does for you
- Builds Shopping and Performance Max campaigns split by part category and margin, with best sellers in their own groups.
- Rewrites titles so part type and vehicle fitment come first, with part numbers in the MPN field.
- Writes the ads and creates images, and shows you each campaign before launch.
- Blocks salvage and repair-shop searches daily and shifts budget between seasonal part groups when you approve.
See the ecommerce guide by niche, the auto repair guide or the pricing section.
Credit packs from $25, 5 credits per $1 of ad spend.
Common questions
How much does Google Ads cost for an auto parts store?
LocaliQ's automotive benchmarks for April 2025 to June 2026 put auto parts and accessories at $2.80 per click and $19.11 per conversion, with 26.16% of clicks converting. The row covers search campaigns from mostly local businesses, and conversions include calls and forms as well as online orders.
How do I show fitment in Google Shopping?
Put the vehicle in the title, usually year range, make and model, and repeat it in the description. Shoppers usually see only the first 70 characters, so the part type and vehicle go first and the brand and part number follow.
Should auto parts listings include GTINs and part numbers?
Yes. Submit the manufacturer GTIN where the part has one, because Google says products with a GTIN submitted without one may have limited visibility. Add the MPN too; shoppers who search a part number are close to buying.
What ROAS should an auto parts store target?
Start at break-even, 1 divided by gross margin. A store keeping 35% of each sale needs 2.86x. Branded replacement parts may carry less margin than private-label accessories, so split them into separate campaigns with their own targets.
Can RunAds run Google Ads for my auto parts store?
Yes. RunAds is an AI agent that builds Shopping, Performance Max and Search campaigns from your catalog, writes the ads and checks the account every day. You approve every launch and budget change.
Sources
- Automotive Search Advertising Benchmarks for 2026, LocaliQ, by Rob Glover. Last updated September 29, 2026; data from April 1, 2025 to June 30, 2026.1,983 US search campaigns on Google Ads and Microsoft Ads, at least 12 per subcategory. The page says its averages are medians.
- Title [title] and structured title [structured_title], Google Merchant Center Help. Checked Nov 6, 2026.Titles can run 1 to 150 characters; shoppers usually see the first 70 or fewer. No prices, sale dates, shipping details or all-caps emphasis in titles.
- Product data specification, Google Merchant Center Help. Checked Nov 6, 2026.Color, size, gender and age group are required for apparel targeted to Brazil, France, Germany, Japan, the UK and the US. GTIN is strongly recommended where one exists; products with a GTIN submitted without one may have limited visibility.
- About seasonality adjustments, Google Ads Help. Checked Nov 6, 2026.For short events of 1 to 7 days where you expect a large conversion rate change; less effective beyond 14 days, because Smart Bidding already handles regular seasonality.
- About negative keywords, Google Ads Help. Checked Nov 6, 2026.Negative keywords don't match close variants, so synonyms and singular or plural forms have to be added separately. Casing and misspellings are covered automatically.
- About responsive search ads, Google Ads Help. Checked Oct 30, 2026.3 to 15 headlines of up to 30 characters, 2 to 4 descriptions of up to 90 characters; include at least one keyword in your headlines.
Every outside number on this page links to its source above, with the date we checked it. RunAds has not published its own account data here.
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