What is a frequent reason for a vehicle failing inspection?

A vehicle often fails inspection when it does not meet safety standards for critical components such as brakes or lights. These systems are crucial for the operation and safety of the vehicle, as they directly affect the driver's ability to control the vehicle and communicate with other road users. Brakes must be responsive and efficient in stopping the vehicle to prevent accidents, while lights, including headlights, taillights, and turn signals, are essential for visibility and signaling intentions to other drivers. If either of these systems is found to be inadequate during the inspection, the vehicle will not pass until the necessary repairs or replacements are made, ensuring that it meets state safety requirements.

While improper tire inflation can also be a reason for failure, it is typically less critical compared to major safety issues like braking effectiveness or functioning lights. Similarly, inadequate fuel levels and a missing owner's manual do not directly relate to the vehicle's safety or operational integrity in the same way that brake and light standards do.