GB   20997-2024 Limits and evaluation targets of fuel consumption for light‑duty   commercial vehicles 
  (Implemented on January 1, 2026)

(1) Added methods   for calculating corporate average CO₂ emission targets and actual CO₂   emissions; (2) Revised corporate average fuel consumption calculation by   including electricity consumption and removing multiplier incentives for NEVs   and low‑fuel‑consumption vehicles; (3) Adjusted the 2029 annual requirement   from 115% to 110%.

To support the   commercial vehicle carbon credit policy (effective in 2028) by aligning the   standard with carbon management objectives; the previous zero‑electricity‑consumption   treatment and NEV multipliers no longer accurately reflect actual carbon   reduction.

January 1, 2028

GB   22757.2-2023 Energy consumption label for light‑duty vehicles—Part 2:   For off‑vehicle‑chargeable hybrid electric vehicles and battery electric   vehicles 
  (Implemented on July 1, 2024)

Changed the   requirement for pure electric passenger car range extension information from   "measured value OR industry average decline rate" to "measured   value" for both high‑ and low‑temperature conditions; light‑duty   commercial vehicles remain unchanged.

Most manufacturers   previously used industry average decline rates, preventing consumers from   understanding actual vehicle range performance in extreme temperatures; this   change aims to guide R&D of high/low‑temperature energy‑saving   technologies from the consumer side.

July 1, 2027

GB   27999-2025 Fuel consumption evaluation methods and targets for passenger   cars 
  (Implemented on January 1, 2026)

Added methods for   calculating corporate average CO₂ emission targets and actual CO₂ emissions;

To support the   passenger car carbon credit policy (effective in 2028) by providing a   scientific and unified technical basis for carbon credit accounting; the   previous standard only specified fuel consumption requirements and did not   define corporate‑level average CO₂ emission targets.

January 1, 2028