Unveiling the Octane Ratings - from knocks to burns, demystify the numbers on the pump for optimal car performance. Get ...

When you're standing at the gas pump and looking at the different fuel grades, it's easy to wonder whether premium gasoline is worth the extra cost. Many drivers assume that paying more automatically ...

Given the whole "driving on the other side of the road" thing, it's easy to assume driving in the United States and Europe are two very different things. Same for when you pull up to the pump in one ...

I recently replaced my wife's 2012 Mercedes-Benz E350 4Matic wagon with a 2016 Volvo V60 Drive-E, a station wagon that impressed me when this magazine had a similar Four Seasons test car in its fleet ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. With the price of regular unleaded gasoline still in the $4-a-gallon range, the comparative price of premium is kind of a bargain ...

If you're a new driver, you may be confused the first time you pull up to the gas station. Most pumps offer a selection of fuel types labeled with a number. Those numbers aren't the price but rather ...

We see the numbers every day at the local gas station, with gas sold based on octane ratings. Most people go to the lower number—usually 87—because it’s the cheapest, but what do the ratings mean, ...

Here's when drivers can fill up with regular gas instead of premium, and whether using premium provides any benefits.