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The details of Ricardo EMLEG

EMLEG (Emissions Legislation) is a comprehensive summary of worldwide exhaust emissions regulations provided by Ricardo. 
The database covers not only exhaust emissions and fuel economy regulations on passenger cars and light duty trucks, but also widely regulations on heavy-duty vehicles, motorcycles and agricultural / constructing equipments, as well as standards and regulations on fuel quality and air environment. In addition, comments and explanations by Ricardo specialists are offered.

Emissions & CO2

Worldwide gas emissions and fuel consumption regulations (provided by: Ricardo Emleg)

WLTP (Worldwide Harmonized Light vehicles Test Procedures)
Worldwide Emission & Fuel Economy/CO2 Regulation Timeline (Passenger Cars & Light Duty Trucks)
Emission Standards Europe EU EU Countries Passenger Cars & Light Duty Trucks
France Passenger Cars & Light Duty Trucks 
Non-EU Switzerland Passenger Cars & Light Duty Trucks 
Norway Passenger Cars & Light Duty Trucks 
Turkey General 
Americas North America USA Passenger Cars & Light Duty Trucks (Federal)
Passenger Cars & Light Duty Trucks (California State)
Air Quality (California State) 
Canada Passenger Cars & Light Duty Trucks 
South America Mexico Passenger Cars & Light Duty Trucks
Brazil Passenger Cars & Light Duty Trucks
Asia East Asia China Passenger Cars & Light Duty Trucks
Heavy Duty Vehicles
Korea Passenger Cars & Light Duty Trucks
South East Asia Thailand Passenger Cars & Light Duty Trucks
Indonesia General 
South Asia India Passenger Cars & Light Duty Trucks
UN regulations Table of amended regulations  by JASIC 
Fuel Economy/CO2 Europe EU EU General Update
France General
Non-EU Switzerland General
Norway General
Americas North America USA
(CAFE, etc)		 Federal
California State
Canada General
Asia East Asia China General
South Asia India General
UN regulations Table of amended regulations by JASIC
Noise UN regulations Table of amended regulations by JASIC
Supplemental Information Test cycles
EU Vehicle Categories

Latest Update

Date Regulation Region Updated Summaries
18 March 2021 Fuel Economy/CO2 EU Definitions/requirements for exceptional manufactures as following 1 to 3 are added :
1. Manufacture whose WLTP(CO2) or NEDC(CO2) for 2020 is equal to zero
2. Manufacture which first time introduce cars on the EU market
3. Small volume manufactures
17 February 2021 Emission Standards Brazil The specifications for the OBD system are defined, containing all the requirements in the emission stage L7 (for SI and CI engine vehicles) and L8 (for SI engine vehicles).
30 November 2020 Emission Standards India 1.BS IV information was moved to Historical Data section due to that BS VI standards were introduced nationwide.
2.Chapter 20 of the AIS-137 Part 3 was issued which include requirements for the RDE test.
3.The limit for in-use diesel vehicles were changed.
27 November 2020 Fuel Economy/CO2 EU 1. In October 2020, the M0 value for LCV to calculate the specific CO2 emission target for the years 2021, 2022 and 2023 was published.
2. In October 2020, the draft of regulation 2020/1589 in February 2020 was published, to allow the European Commission to carry out easier verification and matching of the data relating to CO2 emissions and fuel consumption of new heavy-duty vehicles reported by EU Member States and manufacturers.
3. In July 2020, an additional regulation, for implementing the monitoring and reporting provisions, was published in which EC outlines the procedure to verify the data on CO2 emissions and fuel consumption from heavy-duty vehicles.
26 October 2020 Emission Standards Thailand As of October 2020, no new regulations have been issued. The Thai Industrial Standards Institute announced that the regulations to implement Euro 5 and Euro 6 standards are in preparation.
16 October 2020 Emission Standards EU In September 2020, the Parliament proposed that the NOx CF will be changed from the current 1.43 value to 1.32 and the CF for PN will be unchanged at 1.5. The Parliament also proposed that conformity factors will　be lowered each year and　will cease to apply by 30 September 2022 (CF = 1).
12 October 2020 Fuel Economy/CO2 USA (California State) In August 2020, CARB announced it had finalized individual voluntary bilateral agreements with BMW of North America (including Rolls Royce), Ford, Honda, Volkswagen Group of America (including VW and Audi) and Volvo.
9 September 2020 Fuel Economy/CO2 China 1.The Phase 5 fuel consumption standards for passenger cars will come into effect from 1 January 2021.
2. In fuel consumption test for passenger cars and light commercial vehicles, WLTP test cycles will be used from 1 January 2021.
3. For heavy duty vehicles,　Phase 3 standards apply, for new type approvals, since 1 July 2019.
11 August 2020 Emission Standards USA (California State) 1. For passenger cars, light duty trucks and medium-duty passenger vehicles, SFTP PM standards are in place, starting from model year 2017.
2. Proposed changes to some of the detailed technical requirements of the OBD II programme were finalized on 3 October 2019 and are effective from the same date.
28 July 2020 Fuel Economy/CO2 EU In February 2020, a draft amendments was published to aim at allowing the European Commission to carry out easier verification and matching of the data relating to CO2 emissions and fuel consumption of new heavy duty vehicles reported by EU Member States and manufacturers. Also in February 2020, an additional proposed regulation for implementing the monitoring and reporting provisions, was published to outlines the procedure which will be used by European Commission to verify the data on CO2 emissions and fuel consumption from heavy duty vehicles.
20 July 2020 Emission Standards China On 14 May 2020, the Ministry of Ecology and Environment published an announcement containing limited amendments to the implementation dates for the China 6 standards. All new vehicles have to comply with the requirements of Phase 6a, nationwide, from 1 July 2020.
13 July 2020 Fuel Economy/CO2 Canada 1) For light duty vehicles, the Canadian Environment Department , taking into account that the US EPA had been reviewing the GHG standards for model years 2021 and after, has been conducting a consultation process since August 2018 to assess if the light duty GHG standards for 2022 to 2025 remain appropriate.
2) Phase 2 standards for heavy duty vehicles except trailers , which are in line with the equivalent US standards, will be introduced starting on 1 January 2021.
13 July 2020 Fuel Economy/CO2 USA (Federal) The explanation was added to “programme flexibility” for light duty vehicles, based on the amended SAFE rule.
29 June 2020 Fuel Economy/CO2 USA (Federal) Amendments to the CO2 emissions and fuel economy standards for light duty vehicles for model years 2021 to 2026 were published, in final form, in April 2020.
08 May 2020 Emission Standards EU 1.An initial assessment, with regard to the development of post-Euro 6/VI emissions standards for light duty and heavy duty vehicles, was published by the European Commission at the end of March 2020.
2.Test procedures to measure CO2 emission by passenger vehicles and light commercial vehicles were updated.
08 May 2020 WLTP World The GTR 15 (WLTP) [15] reflecting amendment 5 [16] was globally registered on 23 September 2019.