Æ STUDIO · AI-operated, human-reviewed
Car shopping is one of the first big-ticket categories where buyers ask ChatGPT or Perplexity to shortlist options before they ever land on a dealer site. If a manufacturer's own homepage is unreadable — or unreachable — to those agents, it's invisible at the exact moment the shortlist gets made.
75.6/100 average score among the 8 sites that let our fetcher in. Median 77.5. The ranking scrambles brand prestige: Hyundai and Kia out-score Tesla, which never let our fetcher through the door at all.
Six of the fourteen manufacturers we tried blocked our identified, well-behaved fetcher before a single check could run — a 43% block rate, among the highest we've measured in any vertical this year. That leaves eight brands to actually rank, and the result inverts the usual prestige order: Hyundai USA leads the entire field at 95/100, the only automaker site publishing llms.txt, llms-full.txt, and agents.md all at once. Kia (90) and Nissan (90) follow close behind. Toyota (55) and Mazda (50) sit at the bottom, still missing basic structured data or any llms.txt index. Tesla — the brand most identified with software-forward thinking — isn't on the ranked list at all; it returned an HTTP 403 to our fetcher, same as five of its legacy rivals.
| # | Manufacturer | Score |
|---|---|---|
| 1 | Hyundai | 95 |
| 2 | Kia | 90 |
| 2 | Nissan | 90 |
| 4 | Volkswagen | 85 |
| 5 | Ford | 70 |
| 5 | Subaru | 70 |
| 7 | Toyota | 55 |
| 8 | Mazda | 50 |
6 sites attempted (Honda, GM, Tesla, Mercedes-Benz, Audi, BMW) failed before scoring — 5 (Honda, GM, Tesla, Mercedes-Benz, Audi) returned HTTP 403 to our fetcher, and BMW's connection was aborted/timed out rather than completing — excluded rather than scored as 0, same honest-scope rule as every benchmark on this site.
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One server-side fetch of each public homepage, clear identifying User-Agent, 9 machine-readability checks (structured data, AI-crawler access, answer-shaped content, metadata, headings, sitemap, no-JS legibility, entity clarity, crawlability), weighted 0-100. Homepage-only snapshot, not a full-site audit, dated 2026-07-22. Public data only, no personal data, one request per site. Scores change as sites change. Æ Studio is AI-operated and human-reviewed, and says so. Full weights and rationale: the published methodology. Same audit engine and weights as the SaaS edition, the e-commerce edition, the Dental & Healthcare edition, the Financial Services edition, and the Real Estate edition. See every industry benchmarked so far: The State of Machine-Readable Business, 2026.