Enlyte’s 2026 Envision Trends Report, released June 2, shows that ADAS (Advanced Driver Assistance Systems) calibrations now appear on 34.7% of all collision repair estimates, nearly tripling the 12.1% share recorded in 2022. Each calibration adds an average of $688 to a repairable claim. For self-insured fleet operators, the compounding of calibration costs, tariff-driven parts inflation, and a shrinking repairable pool is a severity trend that belongs in the next reserve review.
What the data shows
Calibration line items grew 31.4% year over year in 2025, and the number of calibrations per repair rose nearly 10% from 2024, per Enlyte. The cost is additive: calibration is a separate operation that did not exist on most estimates five years ago.
Parts inflation is accelerating alongside calibration growth. OEM parts prices rose 4.21% in 2025, up from 3.52% in 2024, and aftermarket parts rose 3.89%, up from 3.08%. Plastic components (bumper covers, headlamp assemblies) sourced from globally manufactured polyethylene are absorbing tariff pass-through at a faster rate than sheet metal.
Meanwhile, CCC Intelligent Solutions’ Crash Course 2026 report puts total loss frequency at a record 23.1% of all claims. With 12 million fewer vehicles aged six years or newer in operation compared to 2020, the repairable pool is older, more technology-laden, and more expensive to fix. Battery electric vehicles compound the trend: average BEV repairable severity runs $6,042, 23% above the $4,902 for gasoline vehicles, per Mitchell’s Q1 2026 EV Collision Insights.
Shops are responding with cost-avoidance behavior. The share of parts repaired rather than replaced rose to 15.5% in 2025 from 14.8% in 2024, the first increase in a decade. That reversal may mask underlying severity in estimates where the repair option keeps the total below a threshold that would otherwise trigger a total loss or exceed a retention.
Who it affects
Self-insured trucking, delivery, and transit fleets carrying auto physical damage within a retention or captive are most exposed. The severity increase concentrates in the retained layer because calibration and parts inflation apply to every repairable claim, not just the large losses that breach an excess attachment. Fleet operators adding electric vehicles face a further severity load that standard development triangles may not yet reflect if BEV claims are blended with the conventional book.
Reserve mechanism
The primary mechanism is severity. Calibration adds a growing cost component to every repairable estimate. When calibration scheduling delays extend cycle time, the paid development pattern slows, potentially understating early link ratios in the chain ladder. Record total loss frequency shifts the claim mix: fewer claims enter the repairable pool, but those that do carry higher average costs. If your actuary’s severity trend selection is anchored to 2022 or 2023 data, it likely understates the current diagonal.
What this means for your next review
Ask your actuary three questions before signing off on the next auto physical damage reserve study. First, does the data distinguish calibrated from non-calibrated repairs, and how is calibration-driven severity reflected in loss development factors? Second, has the total loss frequency assumption been updated to reflect CCC’s record 23.1% rate, and what is the net effect on the repairable severity pick? Third, are tariff-driven parts cost increases embedded in the severity trend selection, or treated as a one-time adjustment that will expire?