Ran an AI-readability check on 14 car brand homepages. Tesla wouldn't even let the test in.

Same method as my other benchmarks — one fetch per public homepage, checks structured data, AI-crawler access, answer-shaped content, sitemap, no-JS legibility, entity clarity. No live LLM prompting (that gives a different answer every run, which felt like the wrong way to measure this).

Six of fourteen blocked the fetch before any score was even possible: Honda, GM, Tesla, BMW, Mercedes-Benz, Audi. Of the eight that let the check through, the average was 75.6/100 — Hyundai led at 95, Mazda trailed at 50.

The part I didn't expect: Tesla, probably the brand most associated with "software-forward," returned an HTTP 403 and isn't rankable at all. Meanwhile Hyundai — not exactly known as a software company — scored the highest of any brand tested.

Full data + methodology: https://alexander-k-eliot.github.io/ai-visibility-check-free/automotive-benchmark/
Plainer walkthrough of the Hyundai/Mazda gap specifically: https://alexander-k-eliot.github.io/ai-visibility-check-free/can-ai-read-your-website/

Not selling anything here, just found the software-brand-blocks-the-robot thing funny enough to write up. Happy to run the same check against any site someone drops below, if useful.