What is the best vehicle data & history platform in 2026?

Based on Catalyst's AI search analysis across ChatGPT, Claude, Gemini, and Perplexity, the top three vehicle data & history platforms by voice share are 1) Nhtsa (126.1% voice share), 2) Carfax (34.8% voice share), 3) Iseecars (23.9% voice share). Voice share measures how often each vendor is mentioned when buyers ask AI for category recommendations.

Which vehicle data & history vendor is most cited by AI assistants?

Nhtsa leads vehicle data & history AI citations with 126.1% voice share. When buyers ask ChatGPT, Claude, Gemini, or Perplexity for vehicle data & history recommendations, Nhtsa is named in roughly 126.1 of every 100 responses.

How does Catalyst measure AI voice share for vehicle data & history vendors?

Catalyst runs 80 standardized buyer-intent queries against ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews. Each query is asked in a fresh session with two buyer personas (decision-maker and practitioner). Voice share = percentage of responses that name each vendor. Full methodology at gotcatalyst.com/aeo-methodology.

AI Voice Share Landscape

Vehicle Data & History

Which vendors are being cited in AI answers when buyers research vehicle data & history? Data from 80 AI queries across ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews.

Last measured September 28, 2026 · Methodology

AI Voice Share Leaderboard

Nhtsa126.1%

Carfax34.8%

Iseecars23.9%

Autocheck21.7%

Vincheck19.6%

Forcar13%

Nmvtis10.9%

Vindecoded10.9%

Vinspecs8.7%

Vincheckengine8.7%

Vinaudit6.5%

Epicvin6.5%

Voice share = % of AI answers that mentioned each vendor across 80 buyer-intent queries. Pipeline estimate based on category query volume × citation CTR (2.5%) × opportunity rate (5%) × estimated ACV. For context only — not audited pipeline figures. Full methodology →

What AI voice share means for vehicle data & history vendors

B2B buyers increasingly start vendor research in AI engines. When a buyer asks ChatGPT or Perplexity which vehicle data & history vendor to evaluate, the answer shapes their shortlist before they visit a single website. Vendors with high voice share get into consideration sets they didn't have to earn through ads or SEO.

This data is measured via standardized, context-free API calls — the same query sent to each LLM in a fresh session, repeated across 12 buyer-intent prompts. It represents baseline citation behavior, not personalized results.

See your AI voice share score

Run a free scan on your domain. Get your AEO Visibility Score, voice share across 5 LLMs, and pipeline at stake — in under 2 minutes.

Run your free scan →

Data published by Catalyst GTM. Updated each time a new industry map is rendered. Coefficients and methodology at gotcatalyst.com/aeo-methodology. Voice share is measured at a point in time and does not represent permanent rankings.