What could a leaking fuel line lead to if not addressed?

A leaking fuel line can have serious consequences if not addressed promptly. One of the most significant risks is an increased chance of fire. Fuel is highly flammable, and any leak can create a hazardous environment, especially if it comes into contact with heat sources or sparks. Additionally, a leaking fuel line can cause a loss of fuel efficiency. When fuel escapes from a leak, the engine may have to work harder to compensate for the lost fuel, leading to higher fuel consumption and costs for the vehicle owner.

Addressing a leaking fuel line is crucial for maintaining vehicle safety and ensuring optimal performance. The other options, while they may indicate different issues within a vehicle, are not directly related to the effects of a fuel line leak. For example, decreased horsepower and torque, overheating of the engine, and worn-out brake pads stem from other mechanical problems rather than immediate consequences of a fuel leak.