Sites using SEO tools score 12 points higher on Lighthouse performance than sites without — the strongest positive signal of any category.
−12
Inventory Marketing
Sites using Inventory Marketing tools score 12 points lower on Lighthouse performance — typically due to heavy ad-targeting and pixel scripts.
92
Best Vendor Pair
Sites running New Relic + Podium together average 92 Lighthouse performance (39 sites measured).
70
Worst Vendor Pair
Sites running CarChat24 + Hotjar together average 70 Lighthouse performance (5 sites measured).
How Each Vendor Category Affects Site Performance
Average Lighthouse performance score for sites with vs without each category detected
We measured the average Lighthouse performance score for dealer sites that use each vendor category versus sites that don't. The delta shows the difference — a positive number means sites using that category tend to perform better, while a negative number means they tend to perform worse. These are correlations based on 10,000+ measured sites, not proof that any vendor causes better or worse performance. Many factors — hosting, content, other tools — affect site speed.
With category (teal)Without category (gray)Number = performance delta
Vendor Performance by Category
Average Lighthouse scores for sites using each vendor (minimum 3 sites)
Vendor Combinations That Help — and Hurt — Performance
Best and worst vendor pairs by average Lighthouse performance across shared sites
Best Performing Pairs
These vendor combinations correlate with the highest average Lighthouse performance scores across shared sites.
Vendor Pair
Categories
Sites
Avg Perf
Worst Performing Pairs
These vendor combinations correlate with the lowest average Lighthouse performance scores. Low sample sizes (under 10 sites) should be interpreted with caution.
Vendor Pair
Categories
Sites
Avg Perf
Standout Vendors
New Relic — Halo Vendor
Appears in 5 of the top 10 best-performing pairs
617 sites, 88 avg performance
Signals technically sophisticated operations teams
Hotjar — Drag Vendor
Appears in 3 of the 8 worst-performing pairs
166 sites, 80 avg performance
Session recording scripts are a known performance drag
About This Data
This analysis is based on automated Lighthouse performance measurements of publicly accessible dealer websites across the United States. All data is collected from public sources using standard web measurement tools.
Important: Correlation does not imply causation. A vendor's presence on a site does not mean that vendor is responsible for the site's performance score. Many factors affect website performance including hosting infrastructure, content volume, image optimization, third-party scripts, and network conditions at the time of measurement.
Sample sizes vary by vendor. Results from vendors with fewer than 10 measured sites should be interpreted with particular caution. Performance scores represent a snapshot in time and may change as sites are updated.
Conscivo does not endorse or criticize any vendor. This data is provided for informational purposes to help dealers make informed decisions about their digital presence. For questions about our methodology, visit our methodology page.
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