Sulfur
The general trend shown by the SGS WWFS is the reduction of sulfur in all gasoline grades. Tanzanian sulfur standards have been at 150 mg/kg since 2012, and the country has not transposed standard EAS 158:2019 with 50 mg/kg sulfur limits.
Sulfur in the regions where samples were taken meet quality specifications, but in rural parts of the country there might be some incompliances.
Sulfur Content of Gasoline in Tanzania, premium and regular grades, 2011-2018
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Source: SGS Worldwide Fuels Survey, 2020