What can result from using low-quality fuel in an engine?

Using low-quality fuel in an engine can lead to engine knock and reduced efficiency. Low-quality fuel often contains impurities or has a lower octane rating, which can cause combustion irregularities. This results in knocking, which is a pinging sound caused by premature ignition of the fuel-air mixture in the combustion chamber. Not only does this negatively affect engine performance, but it can also lead to long-term damage to engine components.

Additionally, low-quality fuel may not burn as completely or efficiently, contributing to reduced fuel economy. This inability to combust properly can lower overall engine performance, causing the vehicle to struggle with acceleration and power delivery. Thus, selecting a higher-grade fuel that meets manufacturer specifications is important for optimal engine performance and longevity.