How Cutting Radio and Scaling Digital Grew Sales 36% and A-Grade Deals 69%
+36%
total sales
+69%
A-grade sales
-46%
cost/conversion
+137%
conversions
The Challenge
Smart Auto operated three Buy Here Pay Here dealership locations across Knoxville and Johnson City, Tennessee as part of America’s Car-Mart — the largest publicly traded BHPH dealership group in the country. When Keller Creative partnered with Smart Auto, the dealerships were spending heavily on traditional advertising — radio, print, and broadcast — with no clear way to measure which dollars were producing leads, applications, or sales. The BHPH automotive space is brutally competitive and margin-sensitive. Every dollar of ad spend needs to justify itself in leads, applications, and closed deals — not just impressions or general “brand awareness.” Smart Auto’s existing advertising strategy was built on radio and traditional media. The spots aired, the bills arrived, and the team had a general sense that the ads were working — but no way to prove it. There was no tracking between an ad and a lead, between a lead and an application, between an application and a sale. The specific challenges were layered: no attribution from radio and print, an A-grade rate problem where the most profitable deals represented only 57% of total sales, multi-location complexity requiring market-specific targeting that radio can’t deliver, and a parent company watching the numbers against national benchmarks.
Shifting Budget From Traditional to Measurable Digital Channels
We proposed a fundamental shift: cut the traditional spend, scale digital, and build a measurement framework that connects every ad dollar to a real outcome. The spend scaled from approximately $169,000 in 2021 to $217,000 in 2023 — a 28% increase. But conversions grew 137% over that same period. The spend grew modestly. The returns grew exponentially.
We demonstrated a positive correlation between advertising spend and three key outcomes: leads and applications, actual vehicle sales, and an increased grade rate — likely driven by having a larger pool of approved applicants to choose from.
Building a Campaign Architecture for BHPH Intent
BHPH customers search differently than traditional auto buyers. They’re searching for approval, not vehicles. “Bad credit car lots near me,” “buy here pay here Knoxville,” “no credit check car dealer” — these are the queries that drive the BHPH business. We structured campaigns around this intent, with separate strategies for branded search, credit-based queries, location-specific terms, and inventory browsing.
Each location got its own campaign architecture. Knoxville and Johnson City serve different demographics, compete against different local dealers, and respond to different messaging. We built distinct strategies that reflected how customers in each market actually search for and evaluate a BHPH dealer.
Connecting Ad Spend to Real Business Outcomes
Conversion tracking was set up from day one. We tracked phone calls and form submissions as primary conversions, with dynamic number insertion to capture and backfill conversions when needed. But the real work happened at the reporting layer. We correlated digital ad spend against the metrics the dealership actually cares about: total leads, total applications, closed sales, and grade rate.
After two and a half years of data, we demonstrated positive correlation between digital advertising spend and all three downstream outcomes — leads and applications, vehicle sales, and grade rate. That’s not a claim. It’s a statistical relationship validated across 33 months of data.
Using Data to Target Higher-Value Buyers
We analyzed the Knoxville buyer data by age to identify which demographics produced the most profitable deals. The 35–44 age bracket stood out: highest average down payment ($824), manageable charge-off rate (29.33%), and strong cash-in-deal numbers. Meanwhile, the 65+ segment showed the lowest charge-off rate at just 15.15%.
This kind of demographic intelligence is impossible with radio. With digital, you can target the demographics that produce the best deals. You don’t just get more leads — you get better leads. That’s how the grade rate moves from 57% to 71%.
The Result
Smart Auto didn’t need to spend more on advertising. They needed to spend differently. The shift from unmeasured traditional media to data-driven digital produced 36% more sales, 69% more A-grade deals, and a 46% lower cost per conversion — all while building a measurement system that proved the ROI at every step. Google Ads spend increased 28% from 2021 to 2023 while conversions increased 137%, meaning the system got dramatically more efficient as it scaled. The grade rate improved from 57% to 71% — representing hundreds of thousands of dollars in reduced portfolio risk. The website generated over 85,600 sessions in 2023 with 72% of traffic from Google. When you can see what’s working, you can do more of it. When you can see what’s not, you can cut it.
