Emissions of nitrogen oxides from road transport in the United Kingdom were approximately 180,700 metric tons in 2023. This was a decrease of some 8.5 percent in comparison to the previous year. Road transportation is the main source of nitrogen oxides emissions in the UK. Nitrogen oxides (NOx) are a group of highly reactive gases including nitrogen dioxide (NO₂) and nitrous oxide (N₂O).
Nitrogen oxides (NOx) emissions from road transportation in the United Kingdom (UK) from 1990 to 2023
(in 1,000 metric tons)
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Defra. (March 13, 2025). Nitrogen oxides (NOx) emissions from road transportation in the United Kingdom (UK) from 1990 to 2023 (in 1,000 metric tons) [Graph]. In Statista. Retrieved April 21, 2025, from https://www.statista.com/statistics/1232964/road-transport-nitrogen-oxides-emissions-uk/
Defra. "Nitrogen oxides (NOx) emissions from road transportation in the United Kingdom (UK) from 1990 to 2023 (in 1,000 metric tons)." Chart. March 13, 2025. Statista. Accessed April 21, 2025. https://www.statista.com/statistics/1232964/road-transport-nitrogen-oxides-emissions-uk/
Defra. (2025). Nitrogen oxides (NOx) emissions from road transportation in the United Kingdom (UK) from 1990 to 2023 (in 1,000 metric tons). Statista. Statista Inc.. Accessed: April 21, 2025. https://www.statista.com/statistics/1232964/road-transport-nitrogen-oxides-emissions-uk/
Defra. "Nitrogen Oxides (Nox) Emissions from Road Transportation in The United Kingdom (Uk) from 1990 to 2023 (in 1,000 Metric Tons)." Statista, Statista Inc., 13 Mar 2025, https://www.statista.com/statistics/1232964/road-transport-nitrogen-oxides-emissions-uk/
Defra, Nitrogen oxides (NOx) emissions from road transportation in the United Kingdom (UK) from 1990 to 2023 (in 1,000 metric tons) Statista, https://www.statista.com/statistics/1232964/road-transport-nitrogen-oxides-emissions-uk/ (last visited April 21, 2025)
Nitrogen oxides (NOx) emissions from road transportation in the United Kingdom (UK) from 1990 to 2023 (in 1,000 metric tons) [Graph], Defra, March 13, 2025. [Online]. Available: https://www.statista.com/statistics/1232964/road-transport-nitrogen-oxides-emissions-uk/
