What could be a consequence of using low-quality gasoline?

Using low-quality gasoline can lead to injector clogging due to the presence of contaminants and additives that are often found in inferior fuel. These substances can create deposits in the fuel system, particularly in the fuel injectors, which are responsible for delivering the right amount of fuel to the engine for combustion. When injectors become clogged, it can disrupt the fuel spray pattern, leading to incomplete combustion, rough engine operation, and potential engine damage over time.

In contrast to the correct option, the other choices describe outcomes that are typically associated with using higher-quality gasoline. For instance, better engine performance and increased horsepower are usually a result of better fuel quality that promotes efficient combustion. Fuel economy improvement also tends to be associated with the use of higher-quality gasoline, as this type helps the engine run more efficiently and effectively.