Insurer profile · Mercury General · NAIC + CMS
Mercury Insurance
Mercury Insurance's complaint record, claim-denial rate and reputation grade, drawn from published NAIC complaint data and CMS Transparency in Coverage.
- D
- Reputation grade
- 1.78
- Complaint index
- 11
- States active
The verdict
Mercury Insurance earns a D reputation grade - a worse-than-average record versus peers, according to the NAIC's published complaint index, its ratio runs 1.78, above the 1.0 market average.
- D
- reputation grade
- 1.78
- NAIC complaint index
Graded on 1 of 3 measures: NAIC complaints. The score is rescaled across the measures available, so it is not directly comparable with a carrier graded on more of them.
How we calculated this grade →NAIC CIS filing desk
NAIC 22276 D · 28.8
GRADE-D · INDEX-HOT · DENIAL-NONE · RANK-LOWER · NEAR-PEER · LINES-1 · BOOK-RICH
- GRADE-D D · 28.8
- INDEX-HOT 1.78
- DENIAL-NONE No CMS file
- RANK-LOWER #55/72
- NEAR-PEER Globe Life · D
- LINES-1 1 line
- BOOK-RICH 6/7 fields
Nearest complaint-index peer: Globe Life (±0.09 index pts)
Instrument codes from this carrier’s NAIC Consumer Information Source filing: grade band, complaint index, CMS denial band, corpus rank, photo-finish peer, line book, and field completeness. Not an official NAIC rating.
Complaint-index neighbourhood around Mercury Insurance
Quietest and hottest poles plus nearest index peers, not a full NAIC corpus board reprint.
Mercury Insurance - complaint index neighbourhood
- Northwestern Mutual… · quietest 0
Northwestern Mutual… · quietest
0 complaint index
- Farmers Property · near
Farmers Property · near
2 complaint index
- Molina Healthcare · near
Molina Healthcare · near
2 complaint index
- Mercury Insurance · this carrier
Mercury Insurance · this carrier
2 complaint index
- Globe Life · near
Globe Life · near
2 complaint index
- Centene Corporation… · near
Centene Corporation… · near
2 complaint index
- Gainsco Insurance · hottest
Gainsco Insurance · hottest
4 complaint index
What this shows According to PlainInsurer's dataset, Mercury Insurance has a lower (better) NAIC complaint index than 24% of the 72 rated insurers it tracks and ranks #13 of 21 carriers by complaint ratio in Auto Insurance.
Where Mercury Insurance sits on complaints
- Best in data 0
Lowest complaint index in PlainInsurer's dataset: 0.23
0 complaint index
- Market avg 1
Market average complaint index = 1.0 (NAIC benchmark)
1 complaint index
- Mercury Insurance
Mercury Insurance: complaint index 1.78
2 complaint index
- Worst in data
Highest complaint index in PlainInsurer's dataset: 3.87
4 complaint index
What this shows Mercury Insurance's complaint index of 1.78 is 78% above the 1.0 market average for a carrier of its size.
Mercury Insurance vs. the full rated-insurer dataset
178% 24th percentile more affordable than 24% of 72 rated insurers
Each bar is a band; taller bars hold more rated insurers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NAIC published complaint index (2024) · 2024
Scale vs. complaint-adjusted score
Complaint record by line of business
| Line | Est. complaints | Complaint index | States active |
|---|---|---|---|
| Auto Insurance | ~2,471 | 1.78 | 11 |
Auto insurance market share
Private-passenger-auto ranking by written premium, NAIC 2024
What the NAIC filing desk shows for Mercury Insurance
According to PlainInsurer's dataset, Mercury Insurance has a lower (better) NAIC complaint index than 24% of the 72 rated insurers it tracks and ranks #13 of 21 carriers by complaint ratio in Auto Insurance.
Mercury Insurance is outside the CMS marketplace file, but the claim-denial rate ranking shows what that data reports for the carriers it does cover. How complaint indexes place Mercury Insurance.
Mercury Insurance carries an A.M. Best Financial Strength Rating of A (Excellent) as of February 2026 (claims-paying ability, not complaint or service quality). Source: AM Best.
Nationwide insurers with similar scores or complaint volume
Two corpus-wide peer sets for Mercury Insurance: nearest national-scale carriers by composite score and by NAIC complaint volume. These are cross-market neighborhoods, not the corporate-family list or same-grade chips above.
Similar composite score
Nearest carriers by composite score (28.8 here). Floored at 50+ complaints and 5+ states.
Similar complaint volume
Nearest carriers by NAIC complaint count (2,471 here). Deduped against the score peers so the two sets stay distinct.
Questions about Mercury Insurance
What does Mercury Insurance's grade mean?
How many complaints does Mercury Insurance have?
How do I file a complaint against Mercury Insurance?
Is Mercury Insurance a good insurance company?
What types of insurance does Mercury Insurance offer?
Verify Mercury Insurance
Mercury Insurance is filed with the NAIC under company number 22276. Search that number directly in the NAIC's own public consumer-information tool to cross-check this page against the primary source.
Verify on NAIC Consumer Information SourceSource: NAIC published complaint index data Complaint index, reputation grade for Mercury Insurance · 2024
Share, download, and related pages for Mercury Insurance
Download the data behind this page
The full PlainInsurer extract, covering every insurer including Mercury Insurance, is available as CSV and JSON. Underlying federal data is public domain; see our methodology for the compilation and grading method.
Data: NAIC published complaint index (2024). Not affiliated with NAIC or CMS.
Every figure on PlainInsurer comes directly from NAIC MCAS and CMS Transparency in Coverage data; no editor types in numbers. See our editorial standards or methodology, or report an error. Data current as of 2026-08-11. Grades measure only the published complaint/denial data; we don't recommend any insurer or policy.