Fourteen Years of Underwriting Losses, and Counting
Commercial auto is reported to have posted a $4.9 billion underwriting loss in 2024, extending a streak of underwriting losses on the line to fourteen consecutive years. Fourteen straight years is not a cyclical dip, it is a structural pattern that predates any single year’s catastrophe activity or inflation spike.
This figure reaches this page through secondary reporting rather than an independently confirmed direct pull of the original release, a caveat worth carrying forward whenever the $4.9 billion figure is repeated elsewhere.
Why Severity Keeps Outrunning Pricing
Claim severity in commercial auto liability is reported to have risen 93.5% between 2015 and 2024, even as claim frequency has fallen since the pandemic. Fewer accidents but far more expensive ones, per crash, is the pattern the numbers describe, and it is the reason pricing increases have struggled to keep pace with the line’s actual loss cost.
The same reporting attributes much of that severity growth to social inflation, jury verdicts and litigation costs rising independent of general price levels, running at roughly 8% annually, more than double the 3% economic inflation rate over the same period.
The Reserve Gap Nobody Is Pricing For Yet
AM Best is reported to project that the commercial auto line remains under-reserved industry wide by $4 billion to $5 billion. An under-reserved line is one where carriers have not yet set aside enough money to cover claims already incurred but not fully paid out, meaning today’s pricing may still be catching up to yesterday’s losses, not just this year’s.
A reserve gap of that size, layered on top of fourteen consecutive years of underwriting losses, is a meaningfully different risk picture than a single bad accident year that pricing can simply correct going forward.
The Only Two Major Lines Still Underwater
Triple-I’s own January 2026 analysis states directly that general liability and commercial auto are the only two major commercial lines forecast to stay above a 100 net combined ratio for 2025, the threshold at which a line is losing money on an underwriting basis before investment income. Every other major commercial line, including property and workers’ compensation, is forecast to sit below that line.
The same analysis found that Q3 2025 direct incurred loss ratios in general liability were the highest in at least 25 years, additional evidence that the pressure sitting on commercial auto is part of a broader liability-cost environment, not an isolated problem unique to one line.
What Persistent Unprofitability Means for How Carriers Write the Line
This is reasoning, not a separately cited statistic: a carrier sitting on fourteen straight years of losses on a line has a real, sourced reason to tighten how it writes new business in that class, whether through pricing, underwriting scrutiny, or a preference for bundling the line with others rather than writing it alone. None of the figures above prove that shift is happening, but they establish exactly the kind of sustained loss pressure that would justify it.
A producer working commercial auto submissions in 2026 is selling into a line every carrier in the market has a documented, current reason to be cautious about, not a line quietly recovering from a rough year.
The Numbers
Commercial auto is reported to have posted a $4.9 billion underwriting loss in 2024, its 14th consecutive year of losses.
Claim severity in commercial auto liability is reported to have risen 93.5% between 2015 and 2024, even as claim frequency has fallen since the pandemic.
Social inflation is reported to be driving commercial auto severity increases averaging 8% annually, more than double the 3% economic inflation rate over the same period.
AM Best is reported to project the commercial auto line remains under-reserved industry wide by $4 billion to $5 billion.
Triple-I’s own January 2026 analysis states general liability and commercial auto are the only two major commercial lines forecast to stay above a 100 net combined ratio for 2025.
The same Triple-I analysis found Q3 2025 direct incurred loss ratios in general liability were the highest in at least 25 years, additional evidence of pressure across the same underwriting environment commercial auto shares.
Sources
The external data in this article draws on the sources below. Figures described in the text as estimates or industry triangulations are directional and are not attributed to a single dataset.
- Risk and Insurance, Commercial Auto Insurance Losses Hit $4.9 Billion as Legal System Abuse Drives Severity Beyond Pricing Gains
- Triple-I (Insurance Information Institute), Resilient U.S. P/C Market Performance Sets Stage for a Complex 2026