Between 2014 and 2019, most emissions recalls in the United States were due to electrical, mechanical and cooling defects. Over a quarter of the vehicles recalled by an emissions recall during that time were affected by these issues. Non-OBD computer-related defects came in second, impacting around ** percent of vehicles affected. In 2019, some *** million vehicles were affected by emissions recalls from the Environmental Protection Agency.
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Stout Risius Ross. (January 1, 2020). Main components involved in emissions recalls in the United States between 2014 and 2019, by share of defects in vehicles affected [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 26, 2026, from /statistics/1276813/leading-components-linked-with-emissions-recalls/
Stout Risius Ross. "Main components involved in emissions recalls in the United States between 2014 and 2019, by share of defects in vehicles affected." Chart. January 1, 2020. ÌÇÐÄÆƽâ°æ. Accessed July 26, 2026. /statistics/1276813/leading-components-linked-with-emissions-recalls/
Stout Risius Ross. (2020). Main components involved in emissions recalls in the United States between 2014 and 2019, by share of defects in vehicles affected. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 26, 2026. /statistics/1276813/leading-components-linked-with-emissions-recalls/
Stout Risius Ross. "Main Components Involved in Emissions Recalls in The United States between 2014 and 2019, by Share of Defects in Vehicles Affected." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Jan 2020, /statistics/1276813/leading-components-linked-with-emissions-recalls/
Stout Risius Ross, Main components involved in emissions recalls in the United States between 2014 and 2019, by share of defects in vehicles affected ÌÇÐÄÆƽâ°æ, /statistics/1276813/leading-components-linked-with-emissions-recalls/ (last visited July 26, 2026)
Main components involved in emissions recalls in the United States between 2014 and 2019, by share of defects in vehicles affected [Graph], Stout Risius Ross, January 1, 2020. [Online]. Available: /statistics/1276813/leading-components-linked-with-emissions-recalls/
