Many businesses assume vehicle risk is simple. If an employee drives for work, their personal auto insurance will handle it. That assumption is one of the most common—and costly—coverage gaps in commercial insurance. Commercial auto insurance exists because business driving creates different liability, different claim severity, and different legal responsibility than personal use. This page explains how commercial auto insurance actually works, where personal policies stop, and how to think about vehicle risk in context of business insurance coverage . What Commercial Auto Insurance Is Designed to Cover Commercial auto insurance applies to vehicles used for business purposes, whether they are owned, leased, or sometimes not owned by the business at all. Coverage typically includes: Bodily injury and property damage liability arising from business-related driving Physical damage to covered vehicles (collision and comprehensive) Medical payments or uninsured motorist coverage , depending on the policy Legal defense costs related to covered auto claims The key distinction is not who owns the vehicle—it is how and why the vehicle is used . Why Personal Auto Insurance Often Doesn’t Apply Personal auto policies are written for individual, non-commercial use. Once driving becomes part of business operations, exclusions often apply. Common situations where personal auto coverage may fail include: Employees driving for deliveries, sales, or service calls Vehicles titled to a business entity Multiple drivers using the same vehicle Higher mileage or regular job-related use Relying on personal auto insurance for business driving can leave both the driver and the business exposed. Owned, Hired, and Non-Owned Auto Exposure Commercial auto risk isn’t limited to company-owned vehicles.