Cox Automotive’s Advertising Playbook for AutoTrader and Kelley Blue Book

In an era where automotive buyers routinely spend up to 100 days researching vehicles before purchase, Cox Automotive has built a disciplined, research-first approach to campaign development. Trent Thacker, senior director of market and customer research at Cox Automotive, recently shared the playbook behind the high-performing creative for brands like AutoTrader and Kelley Blue Book on ADWEEK’s Adspeak podcast.

Rather than relying on gut instinct, the company runs multi-stage testing—from initial concept evaluation through near-finished animatics—to identify what resonates with consumers. This process not only improves messaging but also reduces financial risk by catching weak creative early. A core metric, the “Information Score,” quantifies how clearly, usefully, and distinctively an ad communicates, guiding decisions in a sector where informative content is crucial.

Artificial intelligence has become a practical accelerant inside that process. Cox Automotive uses AI to quickly produce animatics for rapid testing and to build AI-powered consumer personas that help refine scripts for different generational cohorts. The goal is faster iteration without surrendering the human judgment needed to safeguard brand equity, particularly when managing a multi-brand portfolio where cross-brand integration can amplify performance.

Why Research and AI Are Reshaping Automotive Creative

The Automotive Advantage—and Why Generic Creative Falls Short

Automotive advertising rarely succeeds with emotion alone. Because buyers invest months comparing makes, models, and financing, ads must deliver tangible information—price, features, reliability—in a memorable way. Cox Automotive’s reliance on an Information Score reflects that reality. By measuring clarity, usefulness, and competitive differentiation, the metric forces creative teams to ground their work in what car shoppers actually need, rather than chasing attention for its own sake.

Where AI Fits into Cox’s Creative Engine

AI is used not to replace creative talent but to shortcut the expensive, time-consuming early rounds of ad development. Generating animatics via AI lets the team test up to a dozen versions of a concept in days, rather than weeks, and retire underperformers before any money is spent on full production. Similarly, AI-generated consumer personas—built on real data—allow scriptwriters to pressure-test dialogues and offers against distinct audience profiles, from Gen Z first-time buyers to empty-nesters trading down. The human element remains central: final decisions about tone, brand voice, and equity risk still rest with seasoned marketers.

Protecting Brand Equity Across a Portfolio

AutoTrader and Kelley Blue Book serve different consumer needs, yet they belong to the same corporate family. Thacker’s team navigates this by designing campaigns that can run independently or as cross-brand integrations, amplifying reach without blurring identities. The research-first discipline ensures that when a Kelley Blue Book equity message appears alongside an AutoTrader listing ad, both retain their distinct value propositions—and the combined exposure lifts performance for the portfolio, not just the individual brands.

Lessons for Marketers from Cox Automotive’s Creative Process

  • Adopt an Information Score. Develop a simple internal rubric—clarity, usefulness, competitive differentiation—and mandate that every automotive (or high-consideration) brief passes a minimum score before entering production, as Cox Automotive does.
  • Prototype with AI before committing spend. Use AI-generated animatics and simulated consumer personas to test multiple creative concepts rapidly, killing weak ideas early and freeing budget for only the most promising executions.
  • Design for portfolio synergy. When managing multiple brands, map overlapping audiences and build modular creative that can run together without diluting individual identity, turning single-brand campaigns into multiplicative portfolio assets.