The Largest Generative Engine Optimization (GEO) Study in Automotive

For two decades, automotive digital marketing revolved around one gravitational force: Google. AI-generated search has changed that. Reunion Marketing analyzed nearly 2 million dealership-related prompts across ChatGPT, Google AI Overviews, and Perplexity to understand how AI platforms are shaping discovery, evaluation, and decision-making for car buyers today.

The findings break down into three core pillars: Visibility (does your dealership show up at all), Sentiment (how it’s described when it does), and Influence (which sources are shaping that narrative). Real gaps show up fast: visibility drops sharply outside a dealership’s home city, most dealerships sit in a “mixed sentiment” zone with no real differentiation, and a handful of third-party platforms, some untouched in years, are quietly carrying serious weight in how AI describes your dealership.

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