Dearman et al. Int J Environ Res Public Health. 2023; 20: 6043 | Highlighted on Fuelcons
The popularity of sports utility vehicles (SUVs) has hindered the emission benefits of transitioning to battery electric vehicles. This study by Dearman et al. explores the emissions from SUVs, their potential effects on public health and climate goals, and possible solutions. The research employs various scenarios, modeling different rates of SUV sales and electrification. By analyzing carbon dioxide (CO2) and nitrogen oxide (NOx) emissions, as one might expect, the study finds that larger SUVs emit more CO2 and NOx compared to smaller ones. Thus, replacing larger SUVs with smaller ones leads to substantial advantages, including a reduction of 702 million tons of CO2 by 2050 and, at least theoretically, the preservation of 1.8 million life years by cutting down NOx emissions.
When the downsizing strategy is coupled with electrification, even more remarkable outcomes are achieved. This combination results in saving 1,181 million tons of CO2 and gaining 3.7 million life years. The study emphasizes that downsizing SUVs not only contributes to the benefits of electrification but also brings significant public health gains due to reduced CO2 and NOx emissions. The researchers suggest implementing measures such as mass-based vehicle taxation and regulatory changes on the supply side. Overall, this study sheds light on the potential of downsizing SUVs alongside electrification to make a substantial impact on emission reduction, public health improvement, and achievement of climate targets.
Source:
Dearman et al. Int J Environ Res Public Health. 2023 Jun; 20(11): 6043.