According to Ministry of Environmental Protection released the " 2012 Annual motor vehicle pollution control ", the current vehicle emissions of NOx and PM超过90%, HC and CO over 70%. And according to vehicle classification , heavy trucks and buses and PM2.5 particulate matter emissions from the automotive industry emissions were accounted for 61 % and 17.8% , passenger cars accounted for only 2.6%.
At present, our country has not yet implemented a unified standard oil . Beijing Beijing V standard gasoline and diesel use , equivalent to Euro V standards, Shanghai , the Pearl River Delta , Jiangsu and implement national IV standard oil , most of the country 's oil is still the national standard implementation . To the sulfur content of view, Beijing V standard sulfur content requires less than 10ppm, national IV standard requires less than 50ppm, national standards lower than 150ppm. The EU and Japan have gasoline and diesel fuel sulfur content fell to 10ppm, the United States is 30ppm.

According Kero  Throttle Valve   noted that in recent years in order to alleviate the worsening air pollution , some cities have introduced policies such as motor vehicle limit line , but the current implementation point of view, can be described as satisfactory.

For oil upgrade brings significant cost increases will have what impact refiners , for PetroChina, Sinopec, CNOOC these three oil companies, oil upgrade costs of increase is still within the acceptable range , the before technological innovation , equipment replacement work has been delayed , completed under the high-handed policy " since the beginning of the work " is also reasonable. For private enterprises , the upgrading of refined oil is difficult to transfer out , the company will face a serious impact on the living environment , the wave of bankruptcies fear strikes again .

In accordance with the State Council for the oil quality upgrade schedule , the fourth stage motor gasoline standard transitional period up to the end of 2013 , the fourth stage of the standard diesel transition period until the end of 2014 ; fifth phase motor gasoline and diesel standards of the transition period are to end of 2017 .
According to China's refined oil emission standards to the sulfur content of view, Beijing five standard sulfur content lower than 10ppm, China IV standards should be lower than 50ppm, country, three standards below 150ppm. This means that there are only Beijing , Shanghai and the European implementation of the country five fairly standard .
At present, the Pearl River Delta, Jiangsu and other places have already implemented national four standard oil . Other districts are advancing to the State four . Shandong requirements, from 1 January 2014 onwards, the full implementation of national gasoline four criteria.
As oil upgrading , many local refineries dilemma , oil do not upgrade , there is no market ; carry revamping , but unfortunately there were no funds . Moreover, as part of the regional finance major revenue source local refinery closes down , not only the large number of employees to be laid off , local government tax will be affected .
The rising cost of oil will inevitably bring about upgrading refineries to increase spending , less profitable , consumers and local governments need through financial , tax and other ways to ultimately bear , but because of higher costs caused by the shared interests of a growing phenomenon .

With oil quality upgrade , the upgrade process will further increase costs , but reflect the consumer aspect is the cost will increase as traffic increases.

According to the  Throttle Valve   Kero understand the value lies not only in the oil upgrading reduce sulfur , nitrogen and other elements of content , but also adjusted accordingly composition, improve fuel economy . The lower sulfur content required , the corresponding update into the higher . Because refined oil retail prices under control , widespread loss of China's oil refining industry , oil refining sector after upgrading profit margins will be squeezed further , from the industrial perspective of sustainable development , should not be upgraded to bear the full cost to enterprises .