High-Performance Automotive Parts Supplier

90% More Conversions & 52% Higher ROAS in 8 Months: Smarter Ad Scaling

Overview

A premier OEM performance parts manufacturer needed to optimize ad spend across 1,200+ SKUs while battling rising CAC in a competitive niche. Despite running Google Ads, Shopping, and PMax campaigns, their conversions were inconsistent and ROAS lagged behind industry benchmarks.

We implemented a data-driven media overhaul:

✔ GA4-powered audience segmentation (track vs. street enthusiasts)

✔ PMax campaign restructuring with custom asset groups

✔ Dynamic Google Shopping feeds with profit-tier prioritization

✔ “Build Your Engine” configurator for cross-selling

Key Highlights

Conversion Surge: 90% more orders in 8 months with 109.7% ad spend scaling
ROAS Breakthrough:4% improvement (peak at 26% in March 2025)
PMax Dominance: 63% of conversions came from restructured Performance Max
Cost Efficiency: $11.87 lower CPA despite increased competition

Results

52% increase in average ROAS
90% peak increase in monthly conversions
34% decrease in cost per conversion
186% increase in Performance Max (PMax) contribution to conversions

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