---
title: "Aon vs Markel Insurance: Cargo and Transit Insurance"
description: "Aon names General Cargo, Excess Storage, Stock Throughput, and Project Cargo options; Markel Insurance’s U.S. overview describes ocean cargo for shipments by land, air, or sea."
canonical: "https://spot.insure/compare/aon-vs-markel/cargo-transit"
page-type: "line-comparison"
updated-at: "2026-10-01"
comparison-pair: "aon-vs-markel"
provider-a: "aon"
provider-b: "markel"
coverage-line: "cargo-transit"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

[Human-readable page](https://spot.insure/compare/aon-vs-markel/cargo-transit)

## Agent Guide

**What this page is:** Focused comparison of Aon and Markel Insurance for Cargo and Transit Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for Cargo and Transit Insurance questions about Aon versus Markel Insurance. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Aon vs Markel Insurance for Cargo and Transit Insurance: how do they differ?
- Which is better for Cargo and Transit Insurance, Aon or Markel Insurance?
- What does Aon or Markel Insurance publish about Cargo and Transit Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Cargo and Transit Insurance from Aon or Markel Insurance?

**Key facts:**
- Line: Cargo and Transit Insurance. Providers: Aon and Markel Insurance.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-10-01. Editorial policy: /editorial-policy.

**Related pages:**
- [Aon vs Markel Insurance](https://spot.insure/compare/aon-vs-markel) — parent: all coverage lines for this pair
- [Cargo and Transit Insurance guide](https://spot.insure/coverage/cargo-transit) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Markel Insurance profile](https://spot.insure/insurance-providers/markel) — provider profile (evidence)
- [Aon vs Markel Insurance Builders Risk Insurance](https://spot.insure/compare/aon-vs-markel/builders-risk) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Commercial Property Insurance](https://spot.insure/compare/aon-vs-markel/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Crime Insurance](https://spot.insure/compare/aon-vs-markel/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Cyber Insurance](https://spot.insure/compare/aon-vs-markel/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance D&O Insurance](https://spot.insure/compare/aon-vs-markel/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-markel/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-markel/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance General Liability Insurance](https://spot.insure/compare/aon-vs-markel/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Management Liability Insurance](https://spot.insure/compare/aon-vs-markel/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-markel/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Surety Bonds](https://spot.insure/compare/aon-vs-markel/surety-bonds) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-markel/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-markel/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Cargo and Transit Insurance](https://spot.insure/compare/aig-vs-aon/cargo-transit) — sibling comparison (other line, or other pair for this line)
- [AIG vs Markel Insurance Cargo and Transit Insurance](https://spot.insure/compare/aig-vs-markel/cargo-transit) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Cargo and Transit Insurance](https://spot.insure/compare/alliance-risk-vs-aon/cargo-transit) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Markel Insurance Cargo and Transit Insurance](https://spot.insure/compare/alliance-risk-vs-markel/cargo-transit) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Aon Cargo and Transit Insurance](https://spot.insure/compare/amelia-risk-vs-aon/cargo-transit) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Markel Insurance Cargo and Transit Insurance](https://spot.insure/compare/amelia-risk-vs-markel/cargo-transit) — sibling comparison (other line, or other pair for this line)

# Aon vs Markel Insurance: How Do They Compare for Cargo and Transit Insurance?

Aon names General Cargo, Excess Storage, Stock Throughput, and Project Cargo options; Markel Insurance’s U.S. overview describes ocean cargo for shipments by land, air, or sea.

## How to Use the Aon vs Markel Insurance Cargo and Transit Insurance Comparison

Use this comparison to evaluate Aon and Markel Insurance for Cargo and Transit Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Aon vs Markel Insurance Cargo and Transit Insurance Summary

Aon names General Cargo, Excess Storage, Stock Throughput, and Project Cargo/Marine Delay in Start-Up. Markel Insurance’s U.S. overview describes ocean cargo for U.S. shipments by land, air, or sea. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance")

## What Is Aon?

Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [2](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients")

[Aon profile](https://spot.insure/insurance-providers/aon)

## Markel Insurance: Specialty Business and Products

Markel Insurance is Markel Group's specialty and small-business insurance business, with offerings across packages, workers' compensation, cyber, professional and management liability, property, marine, and surety. Products use different insurers and distribution routes, so compare the issuer and terms shown on the specific quote. [4](https://www.markel.com/about-us "About us") [5](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K")

[Markel Insurance profile](https://spot.insure/insurance-providers/markel)

## What Is Cargo and Transit Insurance?

Cargo coverage fits a shipper protecting goods it owns or a carrier responsible for another party’s goods. The quote needs to match who bears the loss, the shipment route and storage stops. [7](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm "Commercial Insurance Guide") [8](https://www.trade.gov/shipping-options "Shipping Options") [9](https://www.trade.gov/special-documents "Special Documents") [10](https://www.nationalunity.com/National/MotorTruckCargoLiability.pdf "Motor Truck Cargo Legal Liability Coverage")

## What Are the Key Differences Between Aon and Markel Insurance Cargo and Transit Insurance?

### Modes and Named Cargo Forms

Aon names several forms, including Stock Throughput and Project Cargo, and describes goods moving by road, rail, sea, or air. Markel Insurance’s U.S. overview focuses on ocean cargo and describes shipments by land, air, or sea. For a buyer whose schedule crosses modes, the useful comparison is Aon’s list of cargo forms against Markel Insurance’s stated ocean-cargo scope; ask each team to identify which form and route the proposal will cover. Neither public description determines the issued wording. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance")

### Transit and Storage Stages

Aon describes loading, unloading, storage, and transit, with Excess Storage and Project Cargo among its named options. Markel Insurance’s U.S. overview describes ocean cargo and shipments by land, air, or sea. An importer comparing goods in a warehouse with goods on a vessel can ask Aon which listed form addresses each stage and ask Markel Insurance how its ocean-cargo proposal handles connecting movement and storage. The written form and schedule determine the actual covered locations. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance")

## What Should You Confirm in Aon and Markel Insurance Cargo and Transit Insurance Quotes?

- Does Markel Insurance’s U.S. offering cover each domestic shipment leg and storage stop, and which Aon form would address the same schedule? [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance")
- Which transport modes, connecting legs, warehouse periods, and cargo form are listed in each proposal? [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance")
- What insurer, limits, retentions, exclusions, and effective date does each proposed policy name? [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance")

## Aon vs Markel Insurance Cargo and Transit Insurance Compared

| Criteria | Aon Cargo and Transit brokerage and risk-advisory offering | Markel cargo transit (official overview) |
| --- | --- | --- |
| Role in This Line | Aon states it offers cargo insurance solutions and describes its role as cargo broker. The page does not name the carrier that would insure a particular shipment or account. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") (Evidence: Company-reported; scope: Aon’s official global product/capability page. The statement is limited to Aon’s marketing of brokerage or advisory services, not policy issuance..) | Markel describes offering cargo transit for the audience stated on the cited product page. [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance") (Evidence: Company-reported; scope: cargo transit marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Issuing Insurer | The reviewed page does not identify the insurer or the legal producing entity for a specific placement. Ask Aon to identify both for the quoted risk. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") (Evidence: Not found in reviewed sources; scope: Aon’s global product/capability page reviewed 2026-09-30; no buyer quote, binder or policy was reviewed. This does not establish that no insurer or producing entity is available..) | Confirm in your quote. |
| Who It’s For | Aon addresses businesses across industries that move raw materials, components, finished goods and appliances by road, rail, sea or air, domestically and internationally. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") (Evidence: Company-reported; scope: Audience stated by Aon on its global capability page; this does not establish a specific applicant’s eligibility or placement availability by U.S. state..) | Transportation customers shipping or storing materials; the source also names motor-truck cargo, contingent cargo, railroad, and warehouse legal liability. [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance") (Evidence: Company-reported; scope: cargo transit marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Coverage Features | Aon describes cargo insurance for physical loss or damage to goods during transportation and describes goods as protected during loading, unloading, storage and transit. Its listed options include General Cargo, Excess Storage, Stock Throughput and Project Cargo/Marine Delay in Start-Up. These are Aon’s product descriptions, not a guarantee that a buyer’s policy includes every category or peril. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") (Evidence: Company-reported; scope: Aon’s broker-authored explanation of the insurance line. It does not establish an individual insured’s policy entitlement; the insurer’s form, endorsements and declarations control..) | The cited product page describes ocean cargo for U.S. shipments by land, air, or sea, alongside motor-truck cargo and contingent-cargo options. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance") (Evidence: Company-reported; scope: cargo transit marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Limits and Retentions | The reviewed page does not state a standard buyer-specific limit, retention or deductible for this placement. Confirm amounts, sublimits and conditions in the quote and issued policy. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") (Evidence: Not publicly disclosed; scope: Aon’s global product/capability page reviewed 2026-09-30; no buyer quote or policy form was reviewed..) | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) |
| Risk Services | Aon describes cargo broking, risk consulting, claims management and a global network coordinating local expertise. These are brokerage and advisory services, not the insurer’s claim decision or a guarantee of recovery. [3](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance "Cargo Insurance") (Evidence: Company-reported; scope: Company-reported brokerage and advisory services. Account-specific service terms are not stated..) | Confirm in your quote. |
| How to Apply | Confirm in your quote. | The page invites prospective customers or brokers to contact Markel or the named underwriting team. The page does not establish a quote, bind, or coverage-effective timeline. [6](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance") (Evidence: Company-reported; scope: cargo transit marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |

## Related Pages for Aon vs Markel Insurance Cargo and Transit Insurance

- [Aon vs Markel Insurance](https://spot.insure/compare/aon-vs-markel): all coverage lines, business roles, service and claims.
- [What Is Cargo and Transit Insurance?](https://spot.insure/coverage/cargo-transit): Cargo coverage protects your financial interest in goods during transit; ownership, route, storage and late-delivery terms shape what the policy addresses.
- [Aon vs Markel Insurance Builders Risk Insurance](https://spot.insure/compare/aon-vs-markel/builders-risk)
- [Aon vs Markel Insurance Commercial Property Insurance](https://spot.insure/compare/aon-vs-markel/commercial-property)
- [Aon vs Markel Insurance Crime Insurance](https://spot.insure/compare/aon-vs-markel/crime)
- [Aon vs Markel Insurance Cyber Insurance](https://spot.insure/compare/aon-vs-markel/cyber)
- [Aon vs Markel Insurance D&O Insurance](https://spot.insure/compare/aon-vs-markel/directors-officers)
- [Aon vs Markel Insurance Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-markel/employment-practices)
- [Aon vs Markel Insurance Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-markel/fiduciary)
- [Aon vs Markel Insurance General Liability Insurance](https://spot.insure/compare/aon-vs-markel/general-liability)
- [Aon vs Markel Insurance Management Liability Insurance](https://spot.insure/compare/aon-vs-markel/management-liability)
- [Aon vs Markel Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-markel/professional-errors-omissions)
- [Aon vs Markel Insurance Surety Bonds](https://spot.insure/compare/aon-vs-markel/surety-bonds)
- [Aon vs Markel Insurance Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-markel/umbrella-excess)
- [Aon vs Markel Insurance Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-markel/workers-compensation)
- [AIG vs Aon Cargo and Transit Insurance](https://spot.insure/compare/aig-vs-aon/cargo-transit)
- [AIG vs Markel Insurance Cargo and Transit Insurance](https://spot.insure/compare/aig-vs-markel/cargo-transit)
- [Alliance Risk vs Aon Cargo and Transit Insurance](https://spot.insure/compare/alliance-risk-vs-aon/cargo-transit)
- [Alliance Risk vs Markel Insurance Cargo and Transit Insurance](https://spot.insure/compare/alliance-risk-vs-markel/cargo-transit)
- [Amelia Risk vs Aon Cargo and Transit Insurance](https://spot.insure/compare/amelia-risk-vs-aon/cargo-transit)
- [Amelia Risk vs Markel Insurance Cargo and Transit Insurance](https://spot.insure/compare/amelia-risk-vs-markel/cargo-transit)

## Sources for Aon vs Markel Insurance Cargo and Transit Insurance

### Sources About Aon

1. [Commercial Risk Solutions U.S. Brokerage Terms of Service](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us). Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed.. Accessed 2026-09-29.
2. [Middle Market Clients](https://www.aon.com/en/capabilities/middle-market-clients). Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page.. Accessed 2026-09-29.
3. [Cargo Insurance](https://www.aon.com/en/capabilities/risk-transfer/cargo-insurance). Aon; Cargo insurance definition and transport scope, coverage examples including loading, unloading and storage, lines 123–175; broking, risk consulting, claims management and global cargo network services in ‘How Aon Can Help’; talk-to-team link at top.. Accessed 2026-09-30.

### Sources About Markel Insurance

4. [About us](https://www.markel.com/about-us). Markel; Markel at a glance; description of Markel Insurance within Markel Group Inc.. Accessed 2026-09-28.
5. [Markel Group Inc. 2025 Form 10-K](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm). U.S. Securities and Exchange Commission; filed by Markel Group Inc.; Cover page; Part I, Item 1 Business—Markel Insurance, U.S. Wholesale and Specialty, Programs and Solutions; Part II, Item 7/8 for group and segment risks. Accessed 2026-09-28.
6. [Commercial Inland Marine Insurance](https://www.markel.com/us/commercial/property/inland-marine). Markel; Ocean cargo; transportation; U.S. shipments by land, air, or sea; product page describes Markel's inland-marine offering.. Accessed 2026-09-30.

### Sources for the Cargo and Transit Insurance Guide

7. [Commercial Insurance Guide](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm). California Department of Insurance; Commercial Property; Inland Marine; What Should I Expect from a Broker-Agent. Accessed 2026-09-16.
8. [Shipping Options](https://www.trade.gov/shipping-options). International Trade Administration, U.S. Department of Commerce; Export Shipping Basics; Tips on International Shipping from U.S.; Working with Freight Forwarders. Accessed 2026-09-16.
9. [Special Documents](https://www.trade.gov/special-documents). International Trade Administration, U.S. Department of Commerce; Insurance Certificate bullet. Accessed 2026-09-16.
10. [Motor Truck Cargo Legal Liability Coverage](https://www.nationalunity.com/National/MotorTruckCargoLiability.pdf). American Association of Insurance Services, Inc.; hosted by National Unity; Coverage and Property Covered pp.1–2; Perils Excluded pp.6–7; Valuation p.8; How Much We Pay p.9; Transit definition p.13. Accessed 2026-09-16.

Updated 2026-10-01. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Aon Review Scores for 2026

Review Score: 6.1 / 10 from 3 rated sources, equally weighted.

Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.

- J.D. Power: Aon study score 822 (out of 1000). Historical 2017 large-commercial-broker study; U.S. and Canada commercial insurance decision-makers at large organizations. J.D. Power reports 2,506 evaluations across the study, not Aon-specific responses; the Aon respondent count is not stated. Period: 2017 study; ranked 3rd among large commercial brokers; study-wide population 2,506, not Aon review count. Checked 2026-09-29. [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, JD Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 1.2 (out of 5); 782 reviews. Global www.aon.com profile merged with other Aon profiles; mixed experiences include pensions, travel, professional indemnity and Australian business quotation service. The two latter complaints are individual unverified allegations, not evidence of U.S. commercial-placement outcomes or insurer fault. Trustpilot says reviews may not be representative because the company has not recently invited reviews. Period: Displayed 2026-09-29; page separately showed 198 reviews in the last 12 months. Checked 2026-09-29. [Aon Reviews](https://www.trustpilot.com/review/www.aon.com)
- BBB: BBB business grade B− (BBB letter grade; stated reason: failure to respond to two filed complaints). BBB of Chicago & Northern Illinois profile for Aon plc; the business grade is BBB’s own measure, not customer stars. Checked 2026-09-29. [Aon plc | BBB Business Profile](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291)
- BBB: BBB customer review average 1.6 (out of 5); 5 reviews. BBB of Chicago & Northern Illinois customer reviews for Aon plc; some reviews are about employee-benefit and medical-expense issues. Period: checked 2026-09-29. Checked 2026-09-29. [Aon plc | BBB Reviews](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/aon/reviews).

## Markel Insurance Review Scores for 2026

Review Score: 7.5 / 10 from 2 rated sources, equally weighted.

There is little public customer feedback on Markel. Trustpilot shows 2.5 out of 5 from just 5 reviews, and BBB lists 12 complaints closed in the last three years.

- J.D. Power: Commercial Lines Insurers agent satisfaction score 726 (out of 1,000). 2022 commercial-lines independent-agent satisfaction study and 2025 small-commercial customer study; these use different populations and measures Period: 2022. Checked 2026-09-29. [2025 U.S. Small Commercial Insurance Study](https://www.jdpower.com/business/press-releases/2025-us-small-commercial-insurance-study); [2022 U.S. Independent Agent Satisfaction Study](https://www.jdpower.com/sites/default/files/file/2022-10/2022134%20U.S.%20Independent%20Agent.pdf)
- Trustpilot: TrustScore 2.5 (out of 5); 5 reviews. Trustpilot brand-level page for markel.com. It mixes products and is not mapped to one legal insurer. Checked 2026-09-29. [Markel Reviews](https://www.trustpilot.com/review/markel.com)
- BBB: BBB business grade A+. BBB business profile for Markel Insurance Company headquarters/corporate-owned locations; review and complaint submissions may include other products and affiliates Checked 2026-09-29. [Markel Insurance Company Business Profile](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547); [Markel Insurance Company Complaints](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547/complaints)
- BBB: Complaints 12; 12 reviews. BBB profile for Markel Insurance Company; complaints may include other Markel products and affiliates and BBB says not all submissions are displayed. Period: last 3 years, as displayed 2026-09-29. Checked 2026-09-29. [Markel Insurance Company Complaints](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547/complaints)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/markel/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-markel/cargo-transit.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)