How are vehicles tested for emissions?
Before a vehicle manufacturer can offer a new vehicle for sale, EPA requires that various laboratory emission tests be conducted on a vehicle representative of the vehicles that will be sold to car buyers to ensure that the vehicles will meet the emission standards. The tests are designed to simulate a wide variety of actual on-road operating conditions (such as highway driving and city driving). The data from these tests are also used to calculate city and highway fuel economy (mpg) values which appear on the window stickers of new vehicles. More information about vehicle testing can be found here.
Before a vehicle manufacturer can offer a new vehicle for sale, EPA requires that various laboratory emission tests be conducted on a vehicle representative of the vehicles that will be sold to car buyers to ensure that the vehicles will meet the emission standards. The tests are designed to simulate a wide variety of actual on-road operating conditions (such as highway driving and city driving). The data from these tests are also used to calculate city and highway fuel economy (mpg) values which appear on the window stickers of new vehicles. More information about vehicle testing can be found here.
