Refiners use an automated fuel blending system when making fuel products to meet the strict specifications of the end products. Strict monitoring is required to keep the fuel blending system controlled and optimized. Therefore, it is crucial to benchmark the state of the fuel blending system. It also helps in comparison with other refineries. This topic will explain fuel blending benchmarking methodology, the typical fuel blender, crude oil products, fuel blending economics, blending performance indices, etc.