Home/Resources/Regulation Library/R-154
ECE R-154
Electric Energy Consumption and Electric Range (WLTP)
Applies to
M, N
Topic
Emissions & sound
Framework
UN ECE
Velocert services
European
Overview
UN Regulation No 154 lays down uniform provisions for the approval of light duty passenger and commercial vehicles with regard to criteria emissions, emissions of carbon dioxide and fuel consumption and/or the measurement of electric energy consumption and electric range (WLTP). It covers the WLTP Type 1 test and the Type 4 test on evaporative emissions, and has rules for verifying the durability of pollution control devices and On-Board Diagnostic (OBD) systems.
Current series: 04 series (in force 30 September 2026); this summary is based on the version published on EUR-Lex, 02 series (2022). GlobalAutoRegs also lists Supplements 1 and 2 to the 04 series with no entry-into-force date. Checked on GlobalAutoRegs, 1 November 2026. For the current text, see the UN (UNECE) page.
Scope
There are two levels of approval. Level 1A applies to M1, M2, N1 and N2 vehicles with a reference mass not exceeding 2 610 kg, and may be extended at the manufacturer's request to vehicles up to 2 840 kg that meet the conditions. Level 1B applies to M2 and N1 vehicles with a technically permissible maximum laden mass not exceeding 3 500 kg and to all M1 vehicles.
The regulation applies to the following vehicle categories:
M
Passenger vehicles
N
Goods vehicles
Official source
For the requirements of this regulation, refer to the official text in force and its amendments.
Official UNECE text