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this period, two trillion miles per year, has resulted in higher levels of air pollutants in many parts of the country.
Routine preventive maintenance will significantly reduce these emissions levels, avoid vehicle problems and costly repairs and protect public health.
In urban areas, vehicle emissions produce as much as 90 percent of the carbon monoxide, over 50 percent of ozone and 56 percent of air toxics.
Currently, 96 major metropolitan areas where 130 million people live fail to comply with the federal ozone air quality standard.
Vehicle emissions are also the number one cause of carbon monoxide nonattainment in 39 cities. These pollutants cause serious health problems.
Auto owners can help eliminate air pollution problems with regular tune-ups.
Proper maintenance guarantees better performance and a longer life for the vehicle.
Car pooling, use of public transportation, walking and biking whenever possible also help clean the air.
92.2%