Most companies already have a grey fleet. They just may not be managing it intentionally.
Any time an employee drives a personal vehicle for work and submits a mileage reimbursement, that driver is part of your grey fleet.
But in many organizations, those drivers sit outside Fleet and Operations, managed instead through Finance or HR as an expense process.
That gap can create unnecessary cost, compliance risk, insurance exposure, and limited visibility into how employees are actually driving for work.

Whether you’re reassessing your current fleet strategy or trying to understand how reimbursed drivers fit into your broader mobility program, this guide will help you make informed decisions with confidence.

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