Nowadays, regarding to motor vehicle roll in air pollution in major cities, evaluating the contaminant from vehicles is a critical. Therefore, in this study the contaminant of hydrocarbons, carbon monoxide and carbon dioxide produced by Pride Saba and 405 Peugeot were checked during the years 2006-2010. Primary data was collected from light vehicles inspection centers. Also it is used for statistical analysis and compared mean values by Excel software and Duncan's multiple range test at a confidence level of 5% (p <0.05). The results showed that peugeot, compared to Pride, produces more carbon monoxide significantly, while it creates lower levels of pollutants, hydrocarbons and carbon dioxide. The decline in the emissions of hydrocarbons and carbon monoxide, unlike carbon dioxide, of both vehicles were inspected among 2006-2010. Since carbon dioxide, are not among the pollutants measured in safety inspection centers, Pride Saba is a better vehicle in point of energy and environmental standards compared Peugeot 405. We hope to solve air pollution problem in the near future by regularly review and improve the technical performance of domestic vehicles.
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