AI Overviews appeared on 57% of tracked manufacturing search volume in July 2026, up 19 points from 38% in January, according to a Semrush study of 458 industrial keywords.

Direct and organic search still drove nearly 80% of all sessions to manufacturing sites. AI search tools and assistants combined for just 0.48%.

How fast are AI Overviews expanding in this vertical?

Semrush pulled the top 1,000 keywords from each of the top 20 manufacturing domains in its Trending Websites ranking. It kept only terms where at least two domains ranked.

That yielded 458 keywords, weighted by search volume from January through July 2026.

Specific product queries such as "pneumatic cylinder" and "csla2gf" gained AI Overviews. Brand searches including "National Instruments" did the same.

What separates AI mentions from citations?

Semrush's AI Visibility database tracks two metrics across ChatGPT, Gemini, AI Mode, and AI Overviews.

A mention is a brand name inside the AI answer text. A citation is a link the model returns as its source.

The top-mentioned brands read like a century club, each predating OpenAI and Gemini by roughly a hundred years. 3M, John Deere, and Boeing topped the list.

Only two domains — Vevor and Grainger — appeared on both the top 15 mentions and top 15 citations lists.

Who actually earns the citations?

Citations skewed toward directories, marketplaces, distributors, and reference sites. The list ran engineerfix.com, vevor.com, thermofisher.com, sigmaaldrich.com, made-in-china.com, rs-online.com, thebluebook.com, grainger.com, thomasnet.com, procore.com, rsc.org, protoolreviews.com, globalspec.com, carrier.com, and energysage.com.

The top-mentioned group carried consistent authority signals across Semrush's metric. The top-cited group had wildly varying scores.

Engineerfix.com posted an Authority Score of 17. Made-in-china.com scored 77 — higher than any top-mentioned brand.

Website authority appears to correlate with mentions more than with citations.

Why does engineerfix.com dominate ChatGPT but not Google?

Engineerfix.com ranks for about 3,700 keywords on Google and pulls minimal estimated Google traffic, per Semrush. Yet it logs near 300,000 monthly organic visits.

DuckDuckGo, Bing, and Yahoo account for over 68% of that traffic. Google contributes less than 2%.

Engineerfix.com dwarfs other sources on ChatGPT. It does not crack the top-cited sources on Gemini, AI Mode, or AI Overviews.

OpenAI draws from partnerships and training data that diverge from Google's retrieval stack, and citation wins on one platform don't necessarily carry over to another.

Do AI citations translate to measurable traffic?

Not cleanly. Top-cited domains don't reliably outpace AI-referred traffic from lower-ranked sources.

Vevor.com and grainger.com generated AI traffic that rivaled or exceeded their mention counts. Siemens.com's AI traffic bar actually surpassed its mentions.

Engineerfix.com pulled heavy ChatGPT citations but only a slice of the AI-referred traffic flowing to lower-ranked domains.

Marketplaces with transactional next steps, like made-in-china.com, drew strong AI traffic alongside reference publishers with original research like rsc.org.

What should manufacturing marketers monitor next?

Direct traffic share is climbing across the sector. Organic search traffic continues to drop.

A separate Semrush survey of more than 600 B2B professionals found buyers using AI to shortlist vendors on purchases over $1,000. Buyers often followed up with a Google search or a direct brand visit.

Semrush's Gaetano DiNardi describes this gap as a "dark SEO funnel," where AI visibility drives buyer research without surfacing in standard AI referral reports.

Marketers should track partnership opportunities with cited distributors, directories, and niche marketplaces. Watch branded search lift and direct traffic trends through late 2026 to gauge mention gains.