China’s fuel consumption standards for heavy-duty vehicles (HDVs) have progressed since Stage 1 was first introduced in 2012, and Stage 4 standards are currently in development.

The monitoring of on-board fuel consumption metering (OBFCM) data is aimed at preventing a growing gap between the certified and real-world CO2 emissions from trucks. This can only be achieved, however, if regulation mandates a certain accuracy for the OBFCM methods in real-world operation.

The European Union CO2 emission performance standards for heavy-duty vehicles mandate fleet-wide average emission reductions of 15% in 2025 and 30% in 2030 for new vehicles compared to the values reported by manufacturers in the baselining period, which ran from July 1, 2019 to June 30, 2020.

The European vehicle market statistics pocketbook offers a statistical portrait of passenger car and light commercial vehicle fleets in the European Union, updated annually. The emphasis is on vehicle technologies and emissions of greenhouse gases and other air pollutants.

Air pollution continues to be a major threat to public health. In 2017, 96% of the European Union’s urban population was exposed to ground ozone levels in excess of air quality guidelines (AQGs) from the World Health Organization (WHO). In the United States, the picture is similar. An estimated 93% of the U.S.

To meet upcoming mandatory fleet-average reductions in CO2, heavy-duty vehicle manufacturers will have to introduce fuel-efficient technologies at a faster rate than they have done in past decades.

The report highlights the limitations of current emissions standards and provides detailed recommendations to overcome them. The recommendations cover several topics where the current light-duty vehicle emission standards should be strengthened.

There is considerable interest in India in moving toward fuel-efficiency standards based on simulation modeling, and particularly in exploring the feasibility of using the Vehicle Energy Consumption Calculation Tool (VECTO) developed by the European Commission.

This paper summarizes and compares the two main test methods for aerodynamic evaluations of heavy trucks in the United States and the European Union: coastdown testing and constant-speed testing, respectively.

For this paper, the CO2 emissions levels of two versions of the Volkswagen Golf, one diesel (Golf TDI) and one gasoline (Golf TSI), were compared both in laboratory tests and in on-road measurements under real-world driving conditions.