Posted on 3/28/2025
Filling up at the gas station should be simple—pull up, select your fuel type, and start pumping. But what if you accidentally choose the wrong gas? Whether it’s putting regular in a car that requires premium or mistakenly filling up with diesel, the wrong fuel can lead to anything from mild performance issues to severe engine damage. If you’ve ever found yourself wondering what happens when the wrong gas goes into your vehicle, understanding the risks and knowing what to do next can save you from costly repairs. Using Regular Gas in a Car That Requires Premium Many performance and luxury vehicles require premium fuel (usually 91 or 93 octane) because their engines are designed for higher compression ratios. If you accidentally use regular unleaded (87 octane) in one of these cars, it might not cause immediate damage, but it can lead to reduced performance, knocking sounds, and long-term wear on the engine. Modern vehicles have knock sensors that ... read more