Free tool for shop owners
Google Ads ROAS Calculator
Move the sliders. Starting numbers are real Auto Mastery client results.
Your inputs
What you invest in ads each month
What you pay for each new-customer phone call
Of new callers, how many book and show up
Of cars that show, how many pay for work
Average first-visit invoice
What if…
The funnel
Lifetime value
New customers keep coming back. Based on Auto Mastery client data, repeat visits from the same customers add another 1.7x return on ad spend within 6 months (e.g. 5.0x on the first visit becomes 6.7x by month 6).
Benchmarks: client-reported results from 73 Google Search and 89 Local Services accounts managed by Auto Mastery ("Blended" pools both channels), each with 3+ live months and $1,500+ spend, pulled Oct 22, 2026, with statistical outliers excluded (1.5× IQR rule on log ROAS). "Average" is the combined (lead-weighted) results of all accounts. "Top 25%" is the combined results of the top quarter of accounts ranked by ROAS. Estimates for illustration only, not a guarantee of results. Your results depend on your market, phones, pricing and capacity.
Next step
Want to see what your shop could do?
Bring your real numbers to a Revenue Accountability Call. We'll walk through your ad spend, your phones and your tickets together, and show you where the gaps in your funnel are.