• AutoZone average operating margin for 2023 was 19.83%, a 1.69% increase from 2022.
• AutoZone average operating margin for 2022 was 20.17%, a 0.3% decline from 2021.
• AutoZone average operating margin for 2021 was 20.11%, a 6.91% 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.