Car Insurance: AI Visibility Market Discovery Index

Benchmark Summary

Questions This Section Answers

• Which car insurance brand leads the October 2026 AI recommendation index?
• How much did Mercury Insurance and The General move since the May 2026 baseline?

Mercury Insurance leads the Car Insurance index in October 2026 with valid recommendation coverage of 30.9%, ahead of Root Insurance at 24.5% by 6.4 percentage points. Mercury Insurance holds the largest coverage increase since baseline, rising from 2.1% in May 2026 to 30.9% in October 2026 — a move beyond normal variation for the category. The largest coverage decline was The General, which fell from 8.6% in May 2026 to 0.0% in October 2026, with a new brand identity, The General®, appearing in the tracked set at 5.7% coverage.

Movement beyond normal month-to-month variation was limited this month. No brand posted a single-month move in valid recommendation coverage beyond normal month-to-month variation, and the category is best described as mixed. Across the full series from May 2026 to October 2026, most tracked brands posted substantial gains. Clearcover rose from 0.0% in May 2026 to 14.2% in October 2026, Direct Auto Insurance rose from 0.0% to 18.1%, Mile Auto rose from 0.0% to 14.2%, and Root Insurance rose from 0.7% to 24.5%. Mercury Insurance recorded an increase in each of the two months since September 2026. Kemper Auto and Clearcover each rose in every month of the four-month span from July 2026 to October 2026.

The benchmark began with 800 prompt-surface observations in each month and produced 282 qualified observations in October 2026 after qualification.

Current Benchmark at a Glance

Qualified surface breadth counts the canonical AI and search surface families with at least one qualified observation. The six families are ChatGPT, Copilot, Gemini, Perplexity, AI Overviews, and AI Mode.

For the strategic interpretation of this benchmark, read CiteWorks Studio's analysis of How AI Search Is Recommending Car Insurance

Research Scope and Qualification

Questions This Section Answers

• How many prompt-surface observations qualified for the public benchmark in October 2026?
• Why do brand-level percentages use qualified observations instead of the raw collection?

The public benchmark is narrower than the raw collection universe by design.

Brand-level percentages use the qualified observations as the public denominator, not the raw collection. See the AI Market Discovery Methodology for full qualification details.

Current Brand Standings

Questions This Section Answers

• Which car insurance brands lead on valid recommendation coverage, and by how much?
• How do presence rate and valid recommendation coverage differ across the tracked brands?

One note on brand identity: the measurement series carries "The General" and "The General®" as separate tracked entities. This report treats each name as given in the data.

How to Read the Standings

• Presence rate: Share of qualified observations where the brand is mentioned at all.
• Valid recommendation coverage: Share of qualified observations where the brand appears in a valid recommendation shortlist.
• Top-three rate: Share of qualified observations where the brand appears in the first three recommendation positions.
• Rank-one rate: Share of qualified observations where the brand is the first recommendation.
• Net sentiment: Positive minus negative mentions divided by total mentions, ranging from -1 to 1.

For formulas and denominator rules, see AI Market Discovery Metric Definitions.

Recommendation Coverage Movement

Questions This Section Answers

• Which car insurance brands gained or lost the most valid recommendation coverage since the May 2026 baseline?
• Which brands posted consecutive monthly gains or declines heading into October 2026?

Between September 2026 and October 2026, no brand moved beyond its normal month-to-month variation. Mercury Insurance continued its increase, moving from 25.1% in September 2026 to 30.9% in October 2026, its second consecutive monthly gain after a 2.1% May 2026 baseline. Root Insurance edged from 21.9% to 24.5%, reversing a two-month easing from its July 2026 level of 25.8%. Mile Auto moved from 19.0% to 14.2%, an easing from its September 2026 position while remaining far above its 0.0% baseline. SafeAuto declined in each of the two months since August 2026. Direct Auto Insurance declined in each of the three months since July 2026, while remaining well above its 0.0% May 2026 baseline.

Largest Increase: Mercury Insurance

Mercury Insurance holds the largest movement since baseline in the series, rising from 2.1% valid recommendation coverage in May 2026 to 30.9% in October 2026, up 28.8 points — a move beyond normal variation for the category. The brand recorded 87 valid recommendation observations in October 2026 and appeared in 166 of 282 qualified observations, with a top-three rate of 14.9% and a rank-one rate of 4.3%.

Largest Decline: The General

The General moved from 8.6% valid recommendation coverage in May 2026 to 0.0% in October 2026, down 8.6 points — a move beyond normal variation for the category. The brand recorded no valid recommendation coverage in September 2026 or October 2026. The General® appears as a separate entry at 5.7% coverage, and the relationship between these two brand identities is not established by this benchmark.

Category Leader: Mercury Insurance

Mercury Insurance leads the category in October 2026 at 30.9% valid recommendation coverage, up from 2.1% in May 2026. Its lead over Root Insurance at 24.5% is 6.4 points. Mercury Insurance holds the widest coverage gap in the series, a 30.9 point advantage over The General, a gap that widened in each month from July 2026 to October 2026.

Recommendation Placement Snapshot

Questions This Section Answers

• Which car insurance brands appear most often in the top three or first recommendation position?
• Why do similar coverage rates hide different rank-one rates across brands?

Coverage alone does not show how prominently a brand is recommended. Placement rates show where brands appear within recommendation shortlists.

Root Insurance posted the highest rank-one rate in October 2026 at 6.7%, while Mercury Insurance led the top-three rate at 14.9%. Close coverage rates hide different first-position rates: Root Insurance's 24.5% coverage carried a 6.7% rank-one rate, while Clearcover's and Mile Auto's matching 14.2% coverage carried rank-one rates of 1.1% and 1.8% respectively.

Buyer-Intent Distribution

In October 2026, all qualified observations fell into the Brand Recommendation class.

The current public series measures brand-recommendation discovery and does not yet contain qualified observations in the Pricing & Value or Multi-Brand Comparison classes.

Historical Measurement Record

Top 10 Cited Domains

Questions This Section Answers

• Which domains are cited most often across AI platform responses about car insurance?
• How concentrated are citations among the top 10 domains versus the remaining sources?

Across all AI platform responses in October 2026, the benchmark observed 5,855 citations drawn from 661 unique domains.

Citations are broadly distributed: the top 10 domains together account for roughly 43% of all citations, leaving more than half spread across the remaining 651 domains. One tracked brand's own domain, mercuryinsurance.com, appears in the top 10 at rank 7, cited 197 times. Third-party comparison and review sites dominate the list, with insurify.com, nerdwallet.com, thezebra.com, wallethub.com, usnews.com, and compare.com together accounting for a large share of the cited sources shaping AI recommendations in this category.

Evidence and Source Layer

The benchmark is built from prompt-level observations that retain the query, AI/search surface, answer, brand outcome, recommendation placement, sentiment, and, where exposed, citations or attributable evidence sources. Source presence is evidence about the information environment. It is not automatically proof that the source caused the recommendation.

Scope Boundaries

This public benchmark does not measure market share, attributable sales, every possible AI response, organic-search ranking, social mention volume, private or sponsored channels, or causality from a metric movement alone.

About This Benchmark

The LLM Authority Index AI Market Discovery Index tracks how AI and search surfaces recommend brands across verticals, using standardized prompt-level measurement and a transparent qualification funnel. Canonical research links:

• AI Market Discovery Methodology
• AI Market Discovery Metric Definitions
• AI Market Discovery Research Standards
• Modeled AI Authority Value

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