• Marathon Petroleum average operating margin for 2023 was 11.63%, a 31.56% decline from 2022.
• Marathon Petroleum average operating margin for 2022 was 8.84%, a 391.11% increase from 2021.
• Marathon Petroleum average operating margin for 2021 was 1.8%, a 113.25% increase from 2020.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.