garberauto.com — AI Site Grade

Analysis

Anthropic-Exclusive Access and the Cold-Knowledge Void

Garber Automotive Group operates a 25-location, multi-franchise dealership network (Acura, Audi, Buick, Cadillac, Chevrolet, Chrysler, Dodge, Ford, GMC, Honda, Hyundai, Jeep, Nissan, Porsche, Ram, Subaru, Volvo) that is entirely invisible to every major AI crawler except Anthropic's — yet the LLM knowledge base has zero awareness the brand exists.

Crawler Access

The site sits behind Akamai (edgesuite.net) with a dual-layer architecture. The Akamai WAF returns HTTP 403 to every browser and every tested AI bot — GPTBot, Google-Extended, ClaudeBot, PerplexityBot, OAI-SearchBot, ChatGPT-User, Bytespider, Applebot-Extended — all blocked. Only anthropic-ai receives a 200 with 606KB of full HTML from an nginx origin server. The robots.txt (accessible only to anthropic-ai) explicitly disallows GPTBot, OAI-SearchBot, ChatGPT-User, Claude-User, Claude-SearchBot, and PerplexityBot from /api/, /apis/, /pixall/, /*.js, /*.css, and /*.json — but the Akamai layer blocks them before they ever reach the robots.txt. No llms.txt exists (returns 403). The sitemap.xml contains thousands of URLs (lastmod dated 2026-05-30, a future date) but is only readable by anthropic-ai.

Cold-Knowledge Gap

When queried about "Garber Auto," the LLM reports no specific knowledge — cannot confirm services, geographic area, brand affiliations, or any notable facts. This is a complete void for a group that sells 17+ automotive brands across 25 nationwide locations. The site's own homepage title ("Shop New & Used Vehicles from our 25 Nationwide Locations") and the DNS openai-domain-verification and anthropic-domain-verification TXT records prove the brand has actively configured AI crawler access — yet the knowledge base has nothing.

Schema and Content Posture

The homepage and all subpages (locations, service, finance, parts, reviews, privacy policy, budget calculator) are built on the Dealer.com (CDK Global) platform. The HTML class attributes list every franchise brand the group carries. However, no JSON-LD structured data was detected on the homepage or any fetched subpage. No AutoDealer, Organization, LocalBusiness, or Product schema is present. The 404 page for /about-us.htm (which returns a branded "Oops!" page with index, follow meta robots) indicates the site lacks a dedicated about page entirely. The reviews page exists but no external review platforms (DealerRater, Google Reviews, Cars.com) were found to be linked in the fetched content.

External Signals

Web searches for "Garber Automotive Group," "Garber Auto Michigan," and related queries returned zero results — no press mentions, no Reddit threads, no review aggregator pages, no directory listings. The brand has effectively no discoverable off-domain footprint that search engines or AI training corpora would surface. The DNS records show integrations with Microsoft 365 (Exchange Online), CDK Global, Facebook, Apple, Google, KnowBe4, and Yahoo — indicating an operational business with digital infrastructure — but none of this translates to external visibility.

Findings

1. Akamai WAF blocks all AI crawlers except Anthropic High

   The Akamai Web Application Firewall returns HTTP 403 to every browser and every tested AI bot (GPTBot, Google-Extended, ClaudeBot, PerplexityBot, OAI-SearchBot, ChatGPT-User, Bytespider, Applebot-Extended). Only anthropic-ai receives a 200 response.

   What to change: Reconfigure the Akamai WAF to allow access for major AI crawlers (GPTBot, Google-Extended, ClaudeBot, PerplexityBot, etc.) to the site's public content.

2. Robots.txt disallows multiple AI bots from key paths High

   The robots.txt explicitly disallows GPTBot, OAI-SearchBot, ChatGPT-User, Claude-User, Claude-SearchBot, and PerplexityBot from paths including /api/, /apis/, /pixall/, and all .js, .css, and .json files. However, the Akamai layer blocks these bots before they reach robots.txt.

   What to change: Remove disallow rules for AI bots from robots.txt, or ensure the Akamai WAF allows them first.

3. No llms.txt file available Medium

   The site returns a 403 for llms.txt, meaning AI crawlers cannot discover a curated list of important URLs.

   What to change: Create an llms.txt file at the root listing key pages (locations, inventory, service) and ensure it is publicly accessible.

4. Sitemap contains future lastmod dates Medium

   The sitemap.xml has lastmod dates set to 2026-05-30, a future date, which may confuse crawlers and reduce trust in the sitemap's accuracy.

   What to change: Update the sitemap to use accurate lastmod dates reflecting actual page update times.

5. No JSON-LD structured data on any page High

   No JSON-LD structured data (AutoDealer, Organization, LocalBusiness, Product) was detected on the homepage or any fetched subpage, severely limiting AI understanding of the business.

   What to change: Add JSON-LD structured data for AutoDealer, Organization, LocalBusiness, and Product to all relevant pages.

6. About page returns 404 Medium

   The /about-us.htm page returns a 404 error, meaning the site lacks a dedicated about page that could provide background information to crawlers and users.

   What to change: Create an about page with company history, mission, and location details.

7. No external review platform links found Medium

   The reviews page does not link to external review platforms like DealerRater, Google Reviews, or Cars.com, missing opportunities for external signals.

   What to change: Add links to external review profiles (DealerRater, Google Reviews, Cars.com) on the reviews page.

8. Zero web search results for brand queries High

   Multiple web searches for 'Garber Automotive Group', 'Garber Auto Michigan', and related terms returned zero results, indicating no discoverable off-domain footprint.

   What to change: Build external presence through press releases, directory listings, social media, and review platforms.

9. LLM has no knowledge of Garber Auto High

   When queried about 'Garber Auto', the LLM reports no specific knowledge, unable to confirm services, geographic area, or brand affiliations despite the site's AI crawler configuration.

   What to change: Improve AI visibility by allowing more crawlers, adding structured data, and building external signals so LLMs can index the brand.

10. Individual location pages return 404 High

    Attempts to access specific location pages (e.g., /locations/Saginaw/, /locations/garber-ford-saginaw.htm) return 404 errors, meaning individual dealership pages are not accessible.

    What to change: Create individual location pages for each dealership with unique content and structured data.

What's working

• Anthropic crawler receives full HTML content — The anthropic-ai crawler successfully retrieves full HTML pages (606KB) from the nginx origin server, indicating the site can serve content to at least one AI crawler.
• Sitemap accessible to Anthropic crawler — The sitemap.xml (1.4MB, thousands of URLs) is readable by anthropic-ai, providing a comprehensive URL list for crawling.
• DNS verification records for OpenAI and Anthropic — The DNS TXT records include openai-domain-verification and anthropic-domain-verification, showing the brand has actively configured AI crawler access.
• HTML class attributes list all franchise brands — The homepage HTML class attributes list every franchise brand (Acura, Audi, Buick, etc.), providing clear brand affiliation data to crawlers that can access the page.
• Operational digital infrastructure with multiple integrations — DNS records show integrations with Microsoft 365, CDK Global, Facebook, Apple, Google, KnowBe4, and Yahoo, indicating a functional business with digital tools.