Driving Service Excellence: A Hands-On Approach to Fill Rate Review and Corrective Action in Auto Manufacturing
DOI:
https://doi.org/10.58425/jpscm.v4i2.439Keywords:
Fill rate, material replenishment planning (MRP) parameters, reorder point (ROP), economic order quantity (EOQ), service level, back order (BO)Abstract
Aim: This article aims to highlight the importance of fill rate as an important metric for after-sales performance in the automotive industry and equip manufacturers and service organizations with actionable methods to enhance inventory availability, strengthen customer trust, and build a more resilient after-sales ecosystem.
Methods: The article provides a framework for calculating fill rates using transactional data and demonstrates practical examples supported by data visualization developed in the Python programming language. It integrates data-driven analysis with operational insights to help diagnose poor fill rate performance, such as inaccurate demand forecasting, supplier delays, rapid changes in demand, material replenishment planning (MRP) parameter issues, and inventory mismanagement. It also outlines strategies to troubleshoot and improve them.
Results: The analysis shows how fill rate can reflect operational efficiency, supply chain agility, and customer-centric service delivery. By applying the calculation methods and visualizations, users can better understand inventory performance patterns, identify bottlenecks, and quantify the impact of the fill-rate variations on service operations and customer experience.
Conclusion: Fill rate is one of the most critical indicators in after-sales operations, as it directly influences vehicle downtime, customer satisfaction, brand loyalty, and long-term revenue growth. Ensuring consistently high fill rates demonstrates strong inventory management and operational effectiveness in an increasingly competitive automotive landscape.
References
Abdullah, S. M. (2025, July 4). Inventory optimization in global automotive manufacturing supply chains. Journal of Procurement and Supply Chain Management, 4(1), 59. https://doi.org/10.58425/jpscm.v4i1.377
Automotive aftermarket industry trends, size report, 2032. (2025, September 15). Fortune Business Insights. Retrieved October 5, 2025, from https://www.fortunebusinessinsights.com/automotive-after-market-102613
Cheng, L., Tsou, C.-S., & Yang, D. (n.d.). Cost-service tradeoff analysis of reorder-point-lot-size inventory models. Journal of Manufacturing Systems, 37(Part 1), 217–226.
Fernando, J. (2025, August 11). Economic order quantity (EOQ): Key insights for efficient inventory management. Investopedia. Retrieved October 6, 2025, from https://www.investopedia.com/terms/e/economicorderquantity.asp
KPI Depot. (n.d.). Vehicle fill rate benchmarks. KPI Depot. Retrieved October 11, 2025, from https://kpidepot.com/kpi/vehicle-fill-rate
Latham, J. (2023, March 22). The key components of replenishment planning. StockIQ Technologies. Retrieved October 15, 2025, from https://stockiqtech.com/blog/the-key-components-of-replenishment-planning/
Liu, Y., Kalaitzi, D., Wang, M., & Papanagnou, C. (2025, June 16). A machine learning approach to inventory stockout prediction. Journal of Digital Economy. https://www.sciencedirect.com/science/article/pii/S2773067025000202
Netstock. (n.d.). Analyzing the relationship between fill rate and service level. Retrieved October 6, 2024, from https://www.netstock.com/blog/analyzing-the-relationship-between-fill-rate-and-service-level/
Perez, Y. (2025, September 12). Understanding backorders: Definition, causes, examples, and differences from out-of-stock. Investopedia. Retrieved October 11, 2025, from https://www.investopedia.com/terms/b/backorder.asp
Salmeron, F., Dahle, M., & Brown, J. (2025, February 18). Aftermarket services: Industrial manufacturer growth. Boston Consulting Group. Retrieved October 5, 2025, from https://www.bcg.com/publications/2025/aftermarket-services-drive-growth-for-industrial-manufacturers
Sapra, A. (2021, March 16). Service levels in inventory optimization. St. Onge. https://stonge.com/insights/blog/service-levels-in-inventory-optimization/
Schalit, S., & Vermorel, J. (n.d.). Service level definition (supply chain). Lokad. Retrieved October 7, 2025, from https://www.lokad.com/service-level-definition/
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2025 Sadique Mohammad Abdullah

This work is licensed under a Creative Commons Attribution 4.0 International License.
The authors retain the copyright and grant this journal right of first publication. This license allows other people to freely share and adapt the work but must give appropriate credit, provide a link to the license, and indicate if changes were made. They may do so in any reasonable manner, but not in any way that suggests the licensor endorses them or their use.






