Mark Michalski explains that many parts managers step into departments shaped by multiple previous managers. Over time, DMS sources, pricing structures, and stocking rules accumulate without oversight. Some stores end up managing hundreds of sources that no longer serve a clear purpose, while inherited matrix setups and outdated phase-in and phase-out settings make it difficult to understand how inventory decisions are being made.
This situation often leaves managers feeling as though they are operating without clear visibility into their own systems. The practical solution begins with a full audit. Cleaning up unused sources and narrowing focus to the 8–15 that actually influence daily operations simplifies the system and improves stocking decisions.
Many parts managers are promoted because they can place orders or manage daily operations, not because they received training. Mark Michalski points out that most managers learn through trial and error, which slows development and creates inconsistencies in inventory management.
Programs such as NADA Academy provide structured instruction on financial analysis, physical inventory principles, and real operational strategies. This type of education gives managers a framework for understanding their department beyond daily tasks.
Managers who invest in training gain the ability to evaluate their inventory, understand financial impact, and apply consistent methods across their operations.
Fill rate directly affects how quickly technicians can complete repairs. When parts are available immediately, service turnaround improves, which increases customer satisfaction and shop productivity.
However, Mark Michalski and Kaylee Felio note that many reported fill rate numbers are misleading. Some systems inflate the metric by including parts that are always in stock, such as oil or common filters.
Accurate measurement requires analyzing source based reports and excluding items that distort the data. When parts achieve fill rates above 90%, dealerships see fewer declined repairs and stronger fixed operations performance.
Mark Michalski believes the next generation of parts managers will increasingly rely on data analysis. Modern inventory management depends less on intuition and more on understanding reports and system outputs.
Managers must learn to interpret their DMS data and supplement vendor managed inventory programs with their own analysis. Vendor managed inventory should support internal strategy. Running reports, validating suggested orders, and adjusting stocking levels based on local demand keeps control inside the dealership.
Strong parts departments operate with transparency and open communication. Managers need access to financial data and clear information about dealership performance so they can make informed inventory decisions.
When leadership provides transparency and encourages data driven choices, parts managers can make confident buy, sell, and stock decisions. In environments where that support is missing, managers often build their own networks by connecting with peers, attending training, and following industry discussions.
Effective inventory management begins by fixing foundational systems. Cleaning up sources, improving training, measuring fill rates accurately, and relying on data. As dealership operations evolve, the parts department continues moving toward a more analytical and strategic role.