Vietnam: Light-duty: Emissions

Vietnam: Light-duty: Emissions

Overview

As of January 1, 2022, 4-wheeled light-duty vehicles in Vietnam are regulated under the Euro 5 standard. The emissions limits are outlined below.

Standard type
Conventional pollutant emission limits

Regulating Body

Ministry of Transport

Current Standard
Euro 5 as adopted under No. 49/2011/QD-TTg

Applicability

Newly manufactured, assembled and imported vehicles (having at least 4 wheels) with maximum total mass not exceeding 2,610 kg.

Contents

Categories

Vietnam Light-duty vehicles Emissions standards

History

Vietnam passed its most recent set of light-duty vehicle emissions regulations in 2011. The first round of standards for light-duty vehicles went into effect in January of 2017, requiring compliance with the nation’s Level 4 emissions standards which are harmonized with Euro IV. As of January of 2022, the nation’s Level 5 standards for light-duty vehicles, which correspond to Euro V levels, took effect.

 

Technical Standards

Light-duty vehicles in Vietnam are currently regulated under the Euro 5 standard. Implementation of Euro 5 emissions standards for cars is the responsibility of the director of the Vietnam Registry and the heads of the Agencies of Communications and Transport.

EURO 5 EMISSION LIMITS FOR VEHICLE POWERED BY DIESEL (WITH COMPRESSION IGNITION)
Vehicle Category
Reference mass (Rm), in kg
 CO NOx THC + NOx PM(1)
(g/km) (g/km) (g/km) (g/km)
M Vehicles: <= 2,500 kg All 0.5 0.18 0.23 0.005/0.0045
N1 Vehicles: > 2,500 kg
 Group 1 Rm <= 1305 0.5 0.18 0.23 0.005/0.0045
Group 2 1305 < Rm <= 1760 0.63 0.235 0.295 0.005/0.0045
Group 3 1760 < Rm 0.74 0.28 0.35 0.005/0.0045
N2 All 0.74 0.28 0.35 0.005/0.0045
1. Positive ignition particulate mass standards apply only to vehicles with direct injection engines.

 

EURO 5 EMISSION LIMITS FOR VEHICLE POWERED BY GASOLINE, LPG, OR NG (WITH POSITIVE IGNITION)
Vehicle Category
 Reference mass (Rm), in kg CO HC NOx NMHC PM(1)(2)
(g/km) (g/km) (g/km) (g/km) (g/km)
M Vehicles: <= 2,500 kg All 1 0.1 0.06 0.068 0.005/0.0045
N1 Vehicles: > 2,500 kg
 Group 1 Rm <= 1305 1 0.1 0.06 0.068 0.005/0.0045
Group 2 1305 < Rm <= 1760 1.81 0.13 0.075 0.09 0.005/0.0045
Group 3 1760 < Rm 2.27 0.16 0.082 0.108 0.005/0.0045
N2 All 2.27 0.16 0.108 0.082 0.005/0.0045

1. Positive ignition particulate mass standards apply only to vehicles with direct injection engines.

2.The previous value corresponds to the method of particle weighing by electronic balance but observe the results with the human eye. The following value corresponds to an automatic grain weighing method through a weighing device and software program (PMP)

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