The enforcement of car insurance is typically the responsibility of government agencies or regulatory bodies. These entities ensure that drivers comply with the mandatory requirement of having car insurance coverage. The specific agency or body responsible for enforcing car insurance can vary depending on the country or region. In the United States, for example, car insurance enforcement is primarily handled at the state level. Each state has its own department or division that oversees the enforcement of car insurance laws. These departments may have different names, such as the Department of Motor Vehicles (DMV), Department of Insurance, or Department of Financial Services. They are responsible for monitoring compliance, issuing penalties for non-compliance, and maintaining records of insurance coverage. Law enforcement agencies, such as the police, also play a role in enforcing car insurance laws. During routine traffic stops or accidents, law enforcement officers may request proof of insurance from drivers. If a driver is found to be uninsured or unable to provide proof of insurance, they may face fines, license suspension, or other penalties. It's important to note that the specific enforcement mechanisms and penalties can vary depending on the jurisdiction. For more detailed information about car insurance enforcement in a specific location, it's best to consult the relevant government agency or regulatory body responsible for overseeing car insurance.