1. (a) Any vehicle of an engine family, test group, any vehicle of a subgroup of an engine family or test group, or any engine used in a piece of equipment, manufactured for sale in California, shall be subject to these test procedures during its useful life. A minimum of ten (10) in-use vehicles or engines determined by the CARB to be properly maintained and used will be procured and tested by the CARB or its designated laboratory to represent the emission characteristics of the engine family, test group or subgroup. The CARB may test less than ten (10) in-use vehicles or engines if the manufacturer notifies the CARB in writing that the manufacturer will accept the results from less than ten (10) vehicles or engines as being representative of the engine family, test group or subgroup

2. (b) No vehicle or engine shall be accepted by the CARB as a representative vehicle or engine for enforcement testing unless the following criteria are met:

   1. (1) California certified and registered.
   2. (2) Odometer indication of less than certified useful-life mileage and vehicle age within useful-life time period.
   3. (3) No indication of abuse (e.g., racing, overloading, misfueling, or other misuse), neglect, improper maintenance or other factors that would have a permanent effect on emission performance.
   4. (4) No major repair to engine or major repair of vehicle resulting from collision.
   5. (5) No indication of any problem that might jeopardize the safety of laboratory personnel.

   6. (6) For off-road compression-ignition engines subject to recall testing, engines shall have an hour meter indication and engine age not exceeding the following periods:

      1. (A) For all engines rated under 19 kilowatts, and for constant-speed engines rated under 37 kilowatts with rated speeds greater than or equal to 3,000 revolutions per minute, four years or 2.250 hours of operation, whichever first occurs.
      2. (B) For all other engines rated above 19 kilowatts and under 37 kilowatts, five years or 3,750 hours of operation, whichever first occurs.
      3. (C) For all engines rated at or above 37 kilowatts, seven years or 6,000 hours of operation, whichever first occurs.

For purposes of this section, any cross-referenced section in title 13 or title 17 of the California Code of Regulations shall refer to the section identified as the alternative version “(Alternative)” for the corresponding section, to the extent an alternative version of that section exists.

Note: Authority cited: Sections 39600, 39601, 43013, 43018 and 43105, Health and Safety Code. Reference: Health and Safety Code Sections 43000, 43009.5, 43013. 43018. 43101, 43104, 43105, 43106, 43107 and 43204-43205.5, Health and Safety Code.

History

1. New section filed 10-2-2025 as an emergency; operative 10-2-2025 (Register 2025, No. 40). A Certificate of Compliance must be transmitted to OAL by 4-1-2026 or emergency language will be repealed by operation of law on the following day.

2. New section refiled 3-26-2026 as an emergency; operative 4-1-2026 (Register 2026, No. 13). A Certificate of Compliance must be transmitted to OAL by 6-30-2026 or emergency language will be repealed by operation of law on the following day.