The LexisNexis 2026 U.S. Auto Insurance Trends Report, released May 19, puts a number on what fleet risk managers have been seeing at renewal: bodily injury claims now account for more than 26% of total auto claims dollars, up from under 20% in 2022. Separately, CCC Intelligent Solutions’ Crash Course 2026 report pegs paid BI severity at 32% above its level four years ago, with a 10.3% year-over-year increase.
The two datasets, compiled independently from insurer and claims data, confirm the same structural shift. BI is displacing physical damage as the dominant cost driver in auto liability.
What changed
Three forces are compounding at once.
BI frequency climbed. The ratio of BI claims to property damage claims rose from 24 per 100 to 29 per 100 between 2022 and 2025, a 21% increase. Distracted driving violations jumped 57% over the same period, with the steepest increases among drivers aged 36 to 45 (up 70%) and 66-plus (up 73%), per LexisNexis. Miles driven rose only 2%, so the increase reflects behavioral change, not more exposure on the road.
Severity accelerated. Paid BI severity has compounded at roughly 7% to 8% annually for four years. That pace outstrips the trend factors many actuaries selected using pre-2022 data. For self-insured fleet programs using five-year weighted averages, the recent acceleration is diluted by the lower-severity years at the front of the window.
The claims mix shifted. Higher deductibles (now on 33% of policies, up from 23% in 2022) filter out small physical damage claims before they enter the data. Total loss frequency hit a record 23.1% of all claims, per CCC. Together, these shifts mean a greater share of reported claims carry BI exposure, concentrating loss dollars in the longer-settling, higher-severity tail.
Who it affects
Self-insured fleet operators in trucking, delivery, transit, and construction are most exposed. These programs typically retain BI within a self-insured retention or single-parent captive, where development pattern assumptions drive the IBNR estimate directly. Public transit authorities and school districts with retained auto liability face the same dynamic. Any program that does not separate BI and physical damage into distinct development triangles will blend two divergent trends into a single factor that understates BI and overstates PD.
Where this shows up in your reserves
The effect surfaces in two places on an actuarial report. First, the severity trend selection for the BI triangle: if the actuary is still picking 4% to 5% annual BI severity trend based on historical averages, the 7% to 8% compounding over the past four years means the selected ultimate for recent accident years is too low. Second, the development pattern itself. As BI claims grow as a share of total auto liability, the blended development tail lengthens. Programs that rely on a combined auto liability triangle will see later-period development factors increase without any obvious change in the underlying data.
Lockton’s May 2026 analysis flagged $1.8 billion in commercial auto adverse development concentrated in accident years 2022 and 2023, consistent with the understatement these trend gaps produce.
What this means for your next review
Ask your actuary three questions before signing off on the next reserve study. First, are the selected BI severity trend factors reflecting the 7% to 8% annual compounding shown in CCC data, or are they still anchored to pre-2022 levels? Second, how does the shift in claims mix affect the development patterns in your auto liability triangle? Third, should BI and PD be separated into distinct triangles if they are not already, given the divergent trend paths? GL and commercial auto lines remain above a 100% combined ratio industrywide; these BI data points explain a significant part of why.