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September 1, 2026
AI Visibility Index: US Electric Vehicle Brand Matrix, Sep 2026
Methodology
Data is from the September 2026 EMARKETER AI Visibility Index. In September 2026, EMARKETER analyzed 5,630 ChatGPT recommendations and 5,630 Google Gemini recommendations in response to US-based interactions across 5 automotive categories: electric vehicles, gas cars, hybrid cars, motorcycles, and trucks and utility vans. Each interaction asked ChatGPT and Google Gemini for product recommendations using standardized prompts (e.g., "best electric pickup," "hybrid SUV for families"). Prompts varied by consumer need, price tier, product attribute, product type, and target audience to capture a representative range of consumer questions for each category. Combined figures weight each tool's data by the number of monthly US users EMARKETER forecasts it will have in 2026 (ChatGPT 118.4 million; Google Gemini 89.6 million).