Since mobile source is a major source of VOCs, quantifying emissions from motor vehicles is an important fact-or to control VOCs in atmosphere. In this study, in order to evaluate tailpipe VOCs emissions from motor vehicles,mass emissions of non-methane volatile organic compounds from 45 vehicles were determined. Measurementswere made on a chassis dynamometer using CVS-75 mode and speed specic drive modes. Target VOCs are 53compounds determined as the volatile ozone precursors. The individual VOCs composition of vehicle emission andemission rates were also determined. In case of gasoline vehicles, VOCs emission from over 80,000 km vehicleswere about 46% larger than less 80,000 km vehicles. The difference in benzene and toluene according to drivingmileage was 44% and 26% respectively. The composition of VOCs were different by fuel type. The order of VOCscomposition was parafns?aromatics?olens in gasoline vehicle emissions, parafns?olens?aromatics in lig-ht duty diesel vehicle emissions. The VOCs emissions were decreased as vehicle speed increasing. These resultswill be used to calculate total VOCs emissions from automobiles in the future.