Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...

Here's what the "E15 Fuel Waiver" means, and everything you need to know about ethanol in gasoline to buy the right fuel for ...

The video essentially positing this question comes from creator Alexis Nido-Russo (@locaeclectic). She posted the video last Sunday and has drawn more than 5.3 million views in a week. In it, she ...

The average national gas price has shot up to more than $4 per gallon due to the war in Iran, so finding ways to save money when you fill up is more important than ever — especially if you drive a lot ...

Add Yahoo as a preferred source to see more of our stories on Google. Are you overpaying for premium gas or getting suboptimal performance out of your car because you're feeding it the wrong fuel?