New Jersey Possession of Altered Motor Vehicle is a violation of New Jersey Statute 39:3-19.1. This statute states that it is illegal for any person to possess, own, or purchase a motor vehicle, or trailer, that has been modified, changed or altered in any way from its original form or condition, including modifications to the vehicle's appearance or performance. The most common types of New Jersey Possession of Altered Motor Vehicle are: 1. Unauthorized performance modifications — These include modifications or alterations to the vehicle's engine, brakes, exhaust system, or other components in order to increase its speed, power, or acceleration. 2. Unauthorized appearance modifications — These include modifications or alterations to the vehicle's body, frame, or interior in order to change its overall appearance. 3. Unauthorized safety modifications — These include modifications or alterations to the vehicle's safety features, such as its brakes or headlights, in order to make it less safe. Anyone found guilty of New Jersey Possession of Altered Motor Vehicle can face a fine of up to $500 and/or up to six months in jail.