Emergence of Diesel Cars and NOx Emissions

Diesel cars were once viewed as a significant advancement for environmental sustainability due to their efficiency and lower carbon dioxide output. However, they also produce harmful nitrogen oxides (NOx), which can cause severe air quality issues, including asthma and acid rain. While manufacturers sought ways to mitigate these emissions to make diesel vehicles commercially viable, the economic feasibility of advanced exhaust cleanup technologies remained a significant barrier. This created an enticing opportunity for car companies to innovate and introduce ‘clean diesel’ vehicles, which promised both a green solution and substantial profits.