The Client
Cvrbonized is an online store for carbon fiber car parts and accessories in the United States, and our Google Ads for car parts grew its holiday ad sales 2.4 times over the year before in the first two months we ran the account.
Cvrbonized sells dry carbon fiber parts for performance cars, with a focus on BMW M models: front grills, hoods, trunk spoilers, lips, fenders and custom steering wheels for the G8x M3 and M4, the G87 M2 and other platforms. Orders often run well over $1,000.
We took over the account in late October 2025 and launched our own campaigns right away.
$45,825 in Google Ads sales in November and December 2024. $111,842 in November and December 2025.
The Challenge
Google Ads for car parts is a fitment game in a crowded market:
- Every part fits one car. A G80 M3 grill is useless to a G87 M2 owner, so the ads have to match the part to the exact model.
- Marketplace competition. Amazon, eBay and big aftermarket sites bid on the same part searches, often with cheaper replicas.
- High-ticket, high-trust buys. Enthusiasts research carefully before paying over $1,000 for a part, and they want real photos of real fitment.
- An inherited account. We took over dozens of overlapping Performance Max and Shopping campaigns built by the previous manager.
What We Built
1. A Top-of-Funnel Performance Max Engine
One Performance Max campaign on the full product feed became the main source of sales: $51,470 in sales on $8,713 of spend in November and December.
2. A Second Performance Max Tier
A second Performance Max campaign, built as a separate product tier with its own budget, brought in $34,531 on $6,861.
3. Campaigns by Car and Part
Dedicated Performance Max campaigns for the BMW G8x M3 and M4 ($20,857 in sales on $4,937), the G87 M2, hoods and steering wheels, each with its own product group, audience signals and creative, plus a best-sellers Shopping campaign.
4. New Image Ads and Holiday Banners
We produced new image ads for each car platform and Black Friday and holiday banners for the store, so the ads and the landing pages carried the same offer.
5. Daily Optimization via Ad Campaign Concierge™
Every campaign was reviewed daily through our proprietary Ad Campaign Concierge™ system: search-term cleanup, budget moved toward the parts and models that sold, and the old overlapping campaigns switched off.
The Results
- $111,842 in online sales from the ads in November and December 2025, 2.4 times the same months a year earlier
- 76 orders at an average of $1,474
- $5.00 back for every $1 of ad spend
What Improved
Compared with November and December 2024:
| Metric | Nov to Dec 2024 | Nov to Dec 2025 (with us) |
|---|---|---|
| Online sales from ads | $45,825 | $111,842 |
| Orders | 51 | 76 |
| Sales per $1 of ad spend | $3.75 | $5.00 |
| Conversion rate | 0.29% | 0.48% |
| Average order value | $903 | $1,474 |
Against the three months just before we took over (August to October 2025), monthly ad sales rose from an average of $36,465 to $55,921, and the return per ad dollar from $3.63 to $5.00.
Key Takeaways
- Structure by car and part. Enthusiasts shop by model, so campaigns built around the G8x, the G87 and each part line put the right product in front of the right owner.
- Consolidate the inherited mess. A few focused Performance Max campaigns beat dozens of overlapping ones.
- Bigger baskets, not just more clicks. The average order rose from $903 to $1,474 as the budget moved to premium parts.
- Match the ads to the store. New image ads and holiday banners carried one offer from the ad to the checkout.
Frequently Asked Questions
How much should a car parts store spend on Google Ads?
Cvrbonized spent $22,353 on Google Ads in November and December 2025, about $11,200 a month. Those two months brought in $111,842 in online sales from the ads, $5.00 for every dollar spent.
Does Google Ads work for premium carbon fiber parts?
Yes. The account sold 76 orders in two months at an average of $1,474, up from $903 in the same months a year earlier. Enthusiasts search by car model and part, and the ads meet them there.
How fast can a new agency improve a car parts account?
We took over in late October 2025. In the first two full months, sales from the ads were 2.4 times the same months a year earlier, and monthly ad sales rose from an average of $36,465 in the three months before us to $55,921.
Is Performance Max good for auto parts?
It was the engine here. Our top-of-funnel Performance Max campaign produced $51,470 in sales on $8,713, a second Performance Max tier $34,531 on $6,861 and the BMW G8x campaign $20,857 on $4,937.
About This Campaign
We ran this account through Ad Campaign Concierge™, our proprietary optimization system for e-commerce.
Industry: Automotive Accessories E-Commerce Platforms: Google Ads (Performance Max, Shopping) Location: USA (ships nationwide) Account Duration: October 2025 to December 2025
Revenue is online purchase value tracked in Google Ads. Add to cart and begin checkout are excluded. "With us" covers November and December 2025, our full months on the account; comparisons are to the same months of 2024 and to August to October 2025 under the previous manager. Amounts in US dollars.