AIG vs 
Liberty Mutual: How Do They Compare for Commercial Auto Insurance?
What Is AIG?
AIG is the marketing name for American International Group, Inc.; AIG says its insurance products are written or provided by subsidiaries or affiliates. Its U.S. business pages list commercial casualty, property, cyber, management and professional liability, and specialty programs, but a brand-level page does not identify the insurer for a particular policy. 1,2
What Is Liberty Mutual Business Insurance?
Liberty Mutual spans small-commercial, commercial, specialty, surety, and reinsurance businesses. The insurer and distribution route depend on the product, so check the offer and policy before you compare terms. 4,5
What Is Commercial Auto Insurance?
Commercial auto suits businesses that use vehicles for work and need liability protection; damage to your own vehicles is a separate coverage choice. If employees drive personal or rented cars, check how those trips are handled. 7,8,9,10
Key Differences in Commercial Auto Insurance
A Narrow Trucking Appetite and Tailored Auto Programs
AIG describes a for-hire trucking segment with vehicles above 26,000 pounds, 11–250 power units, predominantly Class A/B CDL drivers, and at least four operating years. Liberty Mutual says its underwriters tailor commercial-auto solutions based on industry, fleet, location, and vehicle use. For businesses outside AIG’s stated fleet range, ask Liberty Mutual how its underwriting considers the actual operation and driver mix. 3 6
Coverage Categories to Compare
Liberty Mutual names liability, physical damage, bodily injury, and uninsured-motorist coverages, while stating policy terms control actual protection. AIG lists admitted liability and physical-damage products but does not publish the quote’s vehicle schedule or covered causes. Ask both providers to identify the policy forms and whether hired, borrowed, or non-owned vehicles need separate treatment. 3 6
What to Confirm in Commercial Auto Insurance Quotes
Review Scores
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
AIG
Review Score
2 rated sources
Customer ratings for AIG are low: Trustpilot shows 1.9 out of 5 from 252 reviews, and NerdWallet gives 2.5 stars and notes more claims complaints than expected. These pages cover many AIG products and countries, so they only loosely describe business insurance.[1][2]
Read AIG reviewsLiberty Mutual
Review Score
2 rated sources
Customers give Liberty Mutual 4.2 out of 5 on Trustpilot from 3,836 reviews, but that page mixes auto, home and life customers with business ones. For business insurance specifically, NerdWallet gives 3.0 out of 5 and reports more complaints than expected.[4][1]
Read Liberty Mutual reviewsOffering Details
AIG vs Liberty Mutual: Commercial Auto Insurance: documented features by provider
| Criteria | AIG Truck Insurance Group Commercial Auto | Commercial Auto and Fleet |
|---|---|---|
| Role in This Line | AIG describes itself as providing admitted automobile liability and physical-damage insurance to a specifically scoped for-hire trucking segment; the page does not identify the insurer subsidiary for a particular quote. 3Company-reported. Role in this product is limited to the description on the linked AIG source. | Liberty Mutual describes commercial-auto insurance for businesses with commercial vehicles. 6Company-reported. Official Liberty Mutual commercial/product page; company-reported description scoped to Commercial Auto and Fleet. Not policy wording, underwriting approval, state eligibility or a coverage guarantee. |
| Who It’s For | AIG scopes this commercial-auto offer to small and midsize for-hire trucking companies with heavy vehicles above 26,000 pounds, fleets of 11–250 power units, predominantly Class A/B CDL drivers and at least four years of operating experience. AIG says access is through select brokers. 3Company-reported. Audience is the segment AIG names on the linked source; this is not an underwriting decision, quote or guarantee of availability. | The company says underwriters tailor solutions to industry, fleet, location and vehicle use. 6Company-reported. Official Liberty Mutual commercial/product page; company-reported description scoped to Commercial Auto and Fleet. Not policy wording, underwriting approval, state eligibility or a coverage guarantee. |
| Coverage Features | AIG lists admitted automobile liability and physical-damage products for the stated for-hire truck segment. It does not publish a buyer’s vehicle schedule, covered causes, territory, or policy endorsements on this page. 3Company-reported. AIG’s public product description is not the policy. Actual entitlement depends on the applicable issued form, endorsements and declarations. | Its page names liability, physical damage, bodily injury and uninsured-motorist coverages; policy terms determine the actual protection. 6Company-reported. Official Liberty Mutual commercial/product page; company-reported description scoped to Commercial Auto and Fleet. Not policy wording, underwriting approval, state eligibility or a coverage guarantee. |
| Limits and Retentions | AIG says liability deductibles may be offered up to $50,000. This is a stated underwriting option, not a standard deductible or limit for a specific policy. 3Not publicly disclosed. This statement reports only what the linked public source discloses and does not substitute for a quote or issued policy. | Confirm in your quote. |
| Risk Services | AIG describes a broker-facing appetite platform, trucking risk-control consulting, fleet-safety and DOT-compliance support, and a 24/7 incident-management hotline. These services do not expand policy coverage. 3Company-reported. The linked page describes company-reported support; specific account services and third-party arrangements must be confirmed. | Confirm in your quote. |
| How to Apply | Confirm in your quote. | The cited product page does not establish an online application or policy-binding path; ask the listed team or your broker/agent how this product is placed. 6Not found in reviewed sources. Reviewed product-page scope only. This not-found disposition is not a claim that no digital route exists. |
Full Comparison
More AIG vs Liberty Mutual Comparisons
Other Commercial Auto Insurance Comparisons
Sources
AIG
- Investor Relations. American International Group, Inc. (AIG); About AIG and legal footer; lines 244–246 and 327–331. Accessed 2026-09-28.
- Business. AIG US; Surplus Lines heading and paragraph, lines 357–359. Accessed 2026-09-28.
- Truck Insurance Group. AIG; Official AIG Truck Insurance Group page: admitted auto liability and physical-damage products; stated heavy-vehicle, fleet-size, driver and operating-experience criteria; select-broker channel, underwriting platform and risk services. Accessed 2026-09-30.
Liberty Mutual
- Company Profile. Liberty Mutual Group; Strategic business units paragraph: US Retail Markets (individuals/small businesses; small commercial; countrywide) and Global Risk Solutions (mid-size/large businesses; commercial, specialty, reinsurance, surety; worldwide). Accessed 2026-09-29.
- Commercial Insurance Solutions. Liberty Mutual Business Insurance; Commercial solutions index names commercial auto and fleet, cyber, environmental liability, equipment breakdown, excess and surplus, general liability, healthcare liability, inland marine, management liability, multinational, ocean marine, professional liability, property, reinsurance, surety, umbrella/excess and workers compensation. Disclosure says policy insurer is named when offered, may be an affiliate/subsidiary or surplus-lines insurer; states/jurisdictions and actual policy terms vary. Accessed 2026-09-29.
- Commercial Auto and Fleet. Liberty Mutual Business Insurance; ‘Solutions for complex risks’ names liability, physical damage, bodily injury and uninsured motorists; ‘Expertise that delivers’ says underwriting is tailored to industry, fleet, location and usage; ‘Better control over claims’ describes auto liability claims resources. Company marketing claims are not an independent outcome study. Accessed 2026-09-29.
Commercial Auto Insurance Guide
- Commercial Insurance Guide. California Department of Insurance; Commercial Automobile: Coverage, Classification and Limits. Accessed 2026-09-16.
- Auto Insurance. NAIC; Coverages. Accessed 2026-09-16.
- Business Vehicle Insurance. Insurance Information Institute; Will My Personal Auto Policy Cover Business Use?; What Vehicles Are Covered?; What Coverage Do I Need if Employees Drive Their Personal Vehicles for Business?; Does a Business Umbrella Cover Autos?; Do I Need a Business Auto Policy?; Be Sure the Right Insured Is on the Policy. Accessed 2026-09-16.
- Business Auto Coverage Form. Insurance Services Office, Inc.; hosted by National General; I.A, printed/PDF page 1; II.A.1, printed/PDF page 2; III.C–D, printed/PDF page 6; II.B.6, printed/PDF page 3; III.B.3, printed/PDF page 6. Accessed 2026-09-16.
