Which indicators suggest a vehicle may be unsafe prior to inspection?

The indication that dashboard warning lights are illuminated and visible damage is present suggests that the vehicle may be unsafe prior to inspection. Dashboard warning lights often signal critical issues regarding the engine, brakes, or other vital systems, indicating that these components may not be functioning correctly. Additionally, visible damage can compromise the structural integrity or operational capabilities of the vehicle, posing a safety risk to the driver and others on the road. Therefore, observing these indicators is essential in identifying potential safety concerns before a formal inspection takes place.

In contrast, the other options present indicators that do not independently suggest that a vehicle may be unsafe. Clean floor mats, a full tank of gas, decent tire pressure, and recent servicing documentation all imply positive aspects about a vehicle's condition, rather than warning signals that could negatively affect safety.