Millions of drivers are paying extra for premium gas and getting absolutely nothing back.

Add Yahoo as a preferred source to see more of our stories on Google. Person adding gasoline to a lawn mower - Ana-o/Getty Images Using premium gasoline with a higher octane rating can improve how ...

We've all seen octane ratings at the fuel pump, and based on the numbers, it's easy to think the higher number is better. From lowest to highest, the types of gasoline are regular, mid-grade, and ...

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 ...

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 ...

Every time you gas up, you're faced with the decision. Do you press the "regular" or "premium" button at the pump? Are you ruining your car when you opt to save a few bucks, or are you pouring money ...

In my nearly four decades of car ownership, I have driven a staggering variety of vehicles, from vintage Jeep CJ5s and CJ7s and International Scouts to turbocharged late-model Volkswagens and BMWs.

You've probably been there. Standing in front of the pump, eyes darting between regular, mid-grade, and premium. Premium just sounds better. It's more expensive, sure, but you feel premium means ...

It's common knowledge that buying an ex-rental car can be a path to scoring a great deal on your next vehicle. That said, consider that rental cars frequently have more blemishes than normal, such as ...