Can a Scan Tool Change Mileage? Debunking the Myths and Unveiling the Truth

In the realm of automotive technology, scan tools have become an essential instrument for diagnosing and troubleshooting various vehicle issues. However, with the increasing availability of advanced scan tools, questions have arisen about their capabilities, particularly regarding the potential to change a vehicle's mileage. In this blog post, we will delve into the curiosity surrounding this subject and separate the facts from the fiction. Join us on this journey as we explore the fascinating world of mileage adjustment tools and the truth behind their abilities.

Unveiling the Scan Tool Mystery:
1. Understanding Scan Tools:
Before we dive into the topic of mileage adjustment, let's first comprehend what a scan tool is. Scan tools, also known as diagnostic tools, are electronic devices used to communicate with a vehicle's onboard computer system. They are designed to retrieve and interpret data from various sensors and modules, aiding in identifying malfunctions and ensuring optimal vehicle performance.

2. The Purpose of Mileage Adjustment Tools:
Mileage adjustment tools, sometimes referred to as "odometer correction tools," are specialized scan tools utilized to alter the displayed mileage on a vehicle's odometer. These tools are primarily used by authorized professionals, such as car manufacturers, dealerships, and certified technicians, to correct inaccuracies resulting from mechanical repairs, replacements, or other legitimate reasons.

3. The Controversy Surrounding Mileage Adjustment:
Although mileage adjustment tools serve legitimate purposes, they have unfortunately been misused by unscrupulous individuals for fraudulent activities, such as rolling back the odometer to increase a vehicle's resale value. This misuse has led to skepticism and confusion among car owners regarding the capabilities of scan tools.

Debunking the Myths:
1. Scan Tools Cannot Change Mileage:
Contrary to popular belief, standard scan tools available to the average car owner cannot directly change a vehicle's mileage. These tools are primarily meant for diagnostic purposes and lack the functionality to access or modify the internal programming of a vehicle's onboard computer.

2. Specialized Tools for Mileage Adjustment:
Mileage adjustment tools are highly specialized instruments that possess the capabilities to modify the mileage displayed on an odometer. However, these tools are not readily available to the general public and are strictly controlled and regulated to prevent misuse.

3. Legalities and Ethical Considerations:
Using mileage adjustment tools for fraudulent purposes is both illegal and unethical. In many jurisdictions, tampering with or altering a vehicle's mileage is a criminal offense, carrying severe penalties. It is crucial for car owners to understand that accurate mileage is essential for transparency in vehicle transactions and to ensure fair pricing.


Scan tools are remarkable devices that have revolutionized the automotive industry, enabling efficient diagnosis and troubleshooting. However, it is essential to dispel the misconceptions surrounding their capabilities, particularly regarding mileage adjustment. While mileage adjustment tools do exist, they are highly regulated and strictly controlled to prevent misuse. It is imperative for consumers to be aware of the legal and ethical implications associated with tampering with a vehicle's mileage. Let us embrace these tools for their intended purpose, ensuring the safety and transparency of our automotive experiences.