This question already has an answer here:

I just filled up my 2014 Chevy Sonic LT at the gas station. I had a faulty gas pump. I am not sure, but the pump may have put supreme fuel into the gas tank instead of regular. Would I feel a difference in driving the car, and could it harm the engine?

merged by Mark Johnson Aug 22 '16 at 19:52

This question was merged with What happens if you put the wrong kind of gas in your car? because it is an exact duplicate of that question.