In 2017, half of the motorcycles circulating in Rome belonged to the Euro 3 class. Euro 4 motorcycles accounted for only **** percent of the total, while Euro 0 motorcycles, the most polluting kind, represented ** percent of the number of motorcycles in the Italian capital.
*The European emission standards define emission limits for vehicles. The most stringent one, the Euro 6 standards, were introduced for light vehicles in September 2014. Since 2015, all newly introduced models in Europe had to comply with them. By contrast, Euro 0 vehicles are not subject to any emission requirements and are the most polluting category.
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Kyoto Club. (July 1, 2019). Distribution of motorcycles in the Italian city of Rome in 2017, by emission standard* [Graph]. In Statista. Retrieved July 12, 2025, from https://www.statista.com/statistics/995422/distribution-by-type-of-motorcycles-in-rome-in-italy/
Kyoto Club. "Distribution of motorcycles in the Italian city of Rome in 2017, by emission standard*." Chart. July 1, 2019. Statista. Accessed July 12, 2025. https://www.statista.com/statistics/995422/distribution-by-type-of-motorcycles-in-rome-in-italy/
Kyoto Club. (2019). Distribution of motorcycles in the Italian city of Rome in 2017, by emission standard*. Statista. Statista Inc.. Accessed: July 12, 2025. https://www.statista.com/statistics/995422/distribution-by-type-of-motorcycles-in-rome-in-italy/
Kyoto Club. "Distribution of Motorcycles in The Italian City of Rome in 2017, by Emission Standard*." Statista, Statista Inc., 1 Jul 2019, https://www.statista.com/statistics/995422/distribution-by-type-of-motorcycles-in-rome-in-italy/
Kyoto Club, Distribution of motorcycles in the Italian city of Rome in 2017, by emission standard* Statista, https://www.statista.com/statistics/995422/distribution-by-type-of-motorcycles-in-rome-in-italy/ (last visited July 12, 2025)
Distribution of motorcycles in the Italian city of Rome in 2017, by emission standard* [Graph], Kyoto Club, July 1, 2019. [Online]. Available: https://www.statista.com/statistics/995422/distribution-by-type-of-motorcycles-in-rome-in-italy/
