# ISO 4164:1978 — Withdrawn and superseded ISO standards For ISO 4164:1978, item title is Road vehicles — Mopeds — Engine test code — Net power; status code is 9599; successor is ISO 4164:2012; withdrawn / published date is 1978-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4164:1978 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Mopeds — Engine test code — Net power _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4164:2012 - **Withdrawn / published date:** 1978-12-01 _(verified: appears in the quote below)_ ## What the source says > 9932,IS,,ISO 4164:1978,Road vehicles — Mopeds — Engine test code — Net power,Véhicules routiers — Cyclomoteurs — Code d'essai des moteurs — Puissance nette,1978-12-01,1,['43.140'],ISO/TC 22,9599,,[55398],"['en','fr']",11,"

Specifies a method for testing engines designed for mopeds, applicable to the evaluation of their performances with a view, in particular, to presenting curves of power and specific fuel consumption at full load as a function of engine rotational frequency. Applies only to the net power study.

" ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).