Guide to inventory management for your fleet

There is no better way to understand inventory management than putting it into practice. To do this, it is important to follow a step-by-step process that explains this stage in the company and fleet.

Efficient inventory starts with proper vehicle management and the implementation of good practices to improve inventory control.

The benefits include reducing costs by avoiding excessive or emergency purchases, improving operating efficiency by having the necessary parts available without delays, and increasing the ability to respond to maintenance needs quickly and efficiently.

Various methodologies can also be applied to manage inventory, such as Just-in-Time, FIFO (First In, First Out) and SKU (Stock Keeping Unit) codes, each with its own characteristics and benefits for different types of operations.

See below:

What inventory management is
How to manage fleet inventory
The importance of inventory management
Methodologies for fleet inventory management

What is inventory management?

Inventory management involves the company's responsibility for coding, naming, grouping by area and cataloging the parts used for fleet repairs and maintenance.

This process ensures the continued availability of necessary components, preventing long periods of vehicle downtime while waiting for new items to be purchased or delivered.

Proper inventory management allows maintenance needs to be met promptly, improving service quality by reducing delivery delays and increasing operating safety.

How do you manage inventory?

1. Plan and organize demand

Inventory control starts with careful planning of which types of parts are needed and in what quantities.

You need to assess which components fail most often, which wear out quickly and which are difficult to acquire quickly for corrective maintenance.

By analyzing the answers to these questions alongside the maintenance history, it is possible to anticipate maintenance needs and make strategic purchases to establish an inventory that is consistent with and appropriate for your operations.

This stage should also consider seasonal variations in parts demand, allowing even more tailored and efficient planning.

2. Inventory-taking and storage

Efficient inventory-taking is generally carried out through systems that record parts receipts and issues. Technologies such as barcodes, RFID tags or SKU codes can optimize this process.

It is also important to check the appropriate storage conditions for each type of item, such as controlled temperature and humidity, and follow the manufacturer's recommendations to avoid deterioration or loss of product warranties.

3. Management technologies

For large fleets or companies with high delivery demand, speed in inventory processes is essential. Systems that help control the fleet's parts inventory can therefore be very useful.

Quick registration, together with control of receipts and issues, makes it easier to locate items and carry out maintenance. Technologies also help analyze usage and wear data, contributing to more efficient inventory management.

4. Integration with a maintenance system

This integration with a maintenance management system allows direct communication between inventory control and the department's needs, ensuring that the parts required for scheduled or emergency repairs are available when needed.

With integrated systems, information on parts' useful life and vehicle failure patterns can be automatically fed into inventory planning, allowing adjustments to purchase orders and maintenance scheduling.

Why is fleet inventory management important?

Beyond simply making company maintenance easier and organizing demand for new fleet parts, inventory management influences the company's financial health and reputation.

A well-organized inventory, equipped with all necessary items, ensures smooth operating processes, ensuring deliveries are made within the established deadlines and goods are transported with maximum safety and care.

It is also a stage of fleet management that improves productivity in the company's routine and increases cost control, avoiding unexpected spending on emergency purchases or downtime due to a lack of parts.

As an added benefit, these savings and operating efficiency increase business credibility, strengthening the ability to respond to market needs and the company's competitive position.

What are the best methodologies for fleet inventory management?

Just in time

This methodology, also known as “JIT”, aims to minimize the inventory held, bringing in parts and materials only when they are needed for scheduled maintenance. This is beneficial because it reduces storage costs and minimizes the risk of idle parts.

For fleets, this means ordering parts only when maintenance is imminent, depending on precise planning and effective coordination with suppliers.

The downside of this type of inventory management is that a lack of spare parts can make the fleet vulnerable to unforeseen events requiring urgent maintenance.

FIFO (First In, First Out)

The FIFO method (First In, First Out), known in Portuguese as PEPS, is widely used in inventory management, especially for items with expiry dates, such as lubricants, electronic components and even spare parts that can deteriorate over time.

This is because it ensures the oldest items are used first, reducing the risk of using parts that may have degraded over time in inventory.

For fleets, this method optimizes storage space and also helps maintain the quality and reliability of the services provided.

A possible challenge of this method is the need for a well-organized and frequently updated inventory system to correctly keep track of receipt dates and ensure the outgoing flow aligns with purchase dates.

SKU code

The SKU code, short for “Stock Keeping Unit”, is a methodology in which each part or component receives a unique identifier made up of letters and numbers that reflects specific item characteristics, such as type, size, color or manufacturer.

It is particularly important for fleets managing a large volume of diverse parts and components, because it lets inventory managers maintain an organized system where each item can be quickly found and accessed.

This saves time during maintenance and reduces the possibility of errors, such as using incorrect or duplicate parts.

One challenge when implementing an SKU code system is that the team must be properly trained to understand and use the system effectively, ensuring data is always accurate and up to date.

ABC curve

The ABC curve is an inventory classification methodology that organizes items into three categories (A, B and C) based on their value and frequency of use.

Items in category A are the most valuable or most frequently used, requiring stricter control and more frequent inventory reviews. Category B items have a moderate value or frequency of use, while category C items are the least valuable and least used.

This method helps optimize focus and resources in inventory management, concentrating efforts on the items with the greatest impact on fleet operations and costs.

A potential challenge when implementing this methodology is the need for periodic analyses to adjust item classifications as demand or the fleet's operating strategy changes.
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Frequently asked questions

My workshop keeps stopping due to a lack of parts. Where do I start organizing inventory?

With demand planning. Before buying, identify three things: the components that fail most often, those that wear out quickly and those that are difficult to obtain in time when corrective maintenance is needed. Comparing these answers with maintenance history allows you to anticipate needs and make strategic purchases, building inventory consistent with the operation. It is also worth considering seasonal variations in parts demand, which change how much of each item makes sense to keep in storage.

How can you control the cost of a fleet's parts inventory?

By avoiding both extremes: buying too much and buying in a hurry. Well-organized inventory reduces costs because it avoids excessive or emergency purchases and prevents downtime due to a lack of parts — unexpected expenses that arise precisely when there is no control. The ABC curve helps direct effort, concentrating stricter control on higher-value or more frequently used items, while Just-in-Time reduces storage costs by bringing in material only when maintenance is approaching.

What is the difference between Just-in-Time and FIFO in parts inventory management?

They answer different questions. Just-in-Time decides when to buy: parts arrive only when scheduled maintenance is approaching, reducing storage costs and the risk of idle material — but without spare parts in storage, the fleet may be vulnerable to unforeseen events requiring urgent maintenance. FIFO decides what goes out first: the oldest items are used first, which matters for lubricants, electronic components and parts that can degrade in storage.

What should you look for in a fleet inventory control system?

Three features make a difference day to day: records of receipts and issues that allow quick registration and easy item location; barcode, RFID tag or SKU code scanning, which can optimize inventory-taking; and integration with the maintenance management system. This integration is what lets information circulate — data about parts' useful life and vehicle failure patterns can feed inventory planning and adjust purchase orders.

Are the ABC curve and SKU codes used for the same thing?

No. An SKU code gives each part a unique identifier made up of letters and numbers that reflect characteristics such as type, size, color or manufacturer — it helps find the item and reduces the chance of using an incorrect or duplicate part. The ABC curve classifies items into three bands according to value and frequency of use, to decide where control needs to be stricter. One organizes identification; the other, priority of attention.

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