New SAE Recommended Practice sets uniform test procedures for hybrid electric vehicles

SAE’s latest revision to its recommended practice document updates test procedures for emissions and fuel economy of hybrid-electric vehicles.

SAE’s Light Duty Vehicle Performance and Economy Measure Committee has released a revision to SAE Recommended Practice (RP) J1711_202302: Recommended Practice for Measuring the Exhaust Emissions and Fuel Economy of Hybrid-Electric Vehicles (HEVs), Including Plug-in Hybrid Vehicles (PHEVs).

The new document is a revision and update to the original J1711 RP, first published in 1999. The revision reviews and updates test procedures to improve accuracy and reduce testing burden. It establishes uniform chassis dynamometer test procedures for HEVs and PHEVs designed for use on public roads, and includes instructions for measuring and calculating exhaust emissions and fuel economy of these vehicles.

Calculations or test methodology intended to certify a PHEV for compliance to emission standards, however, is beyond the scope of this document. The new document does not include test procedures for recharge-dependent operating modes of vehicles, nor does it address the methods necessary to calculate adjusted U.S. EPA miles per gallon labels for vehicles.

The SAE Light Duty Vehicle Performance and Economy Measure Committee is part of the SAE Vehicle Engineering Systems Committee. It has published 14 documents covering technical guidance in the measurement of vehicle performance characteristics. Sponsor of the J1711_202302 document is Michael Duoba, Research Engineer at Argonne National Laboratory.

To learn more about the work of this SAE technical standards committee, or to inquire about adding your experience and skills to its efforts, contact SAE’s Mark Zar, Committee Manager, at:

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