Car Make, Age and Fuel Economy All Affect How Much Vehicles Pollute

Ohio State University Public release date: 9 Jan 2006 When it comes to how much automobiles pollute, some makes are cleaner than others, according to new research. While other studies have analyzed data from state emissions tests, this is the first time that researchers examined how different car makes compared. The study also found that the vehicles that polluted the most tended to be those that were older models, had higher mileage, poorer fuel economy, and were less-well-maintained. Read more