What type of SERO inspection can be conducted without a charge?

A visual inspection can be conducted without a charge because this type of inspection typically involves examining the vehicle's exterior and interior features for visible defects, issues, or signs of wear and tear. It requires no specialized tools or equipment, making it a quick and straightforward process that can be performed by anyone trained in vehicle inspection.

In contrast, other types of inspections, such as mechanical or underbody inspections, often necessitate the use of specialized equipment or tools and may involve more labor-intensive processes, which are likely to incur a fee. These inspections focus on checking the functionality of mechanical components or evaluating parts of the vehicle that are not immediately visible, which adds complexity and cost. Additionally, a weight inspection requires weighing the vehicle, typically using scales, which again adds to the operational costs. Thus, the visual inspection stands out as the type performed without a charge.