AI Summary

Analysis of official 2024 real‑world data shows plug‑in hybrid electric vehicles emitting nearly six times more CO₂ than the WLTP test values. The gap is widening as the market shifts to heavier, higher‑power, longer‑range PHEVs that lack sufficient electric‑motor capability. Regulators plan a utility‑factor correction in November 2026/27 to bring official accounting in line with actual climate impact. Evidence from the 2025 UF correction indicates that improved technology and longer electric ranges can lower emissions enough to offset the higher official CO₂ figures. This correction aims to spur meaningful performance improvements without threatening European PHEV producers.

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