The test equipment produces the analysis almost immediately, says Paslawski. The data we get will allow us to make that comparison. Meanwhile, there are ways to reduce the amount of pollution coming out of your car. Driving less and walking or cycling more is one approach. Driving smoothly and at moderate speed reduces the amount of gas you use and the quantity of exhaust the car emits.
Regular maintenance is also important.
A badly tuned car might emit 10 times as much pollution as one that is well maintained. Properly inflated tires also reduce gas consumption. In winter, cars and trucks left idling are major contributors of pollution. Even in extreme cold, just a few minutes of idling produces the maximum warming effect, says Paslawski. We've heard cases of people leaving their vehicles running for a whole night.