With the price of regular unleaded gasoline still in the $4-a-gallon range, the comparative price of premium is kind of a bargain at many stations. Really. When the price of regular surged this spring ...

The national average for a gallon of gas hit a record high of $4.17 on Tuesday, but it’s much worse than that for some car owners. That relatively low price is for regular fuel, while mid-grade is at ...

DENVER (KDVR) — Gas pumps in some Western states look a little different than the rest of the country. Most states have the option of choosing octane ratings of 87 (regular), 88–90 (midgrade) and ...

I have a 2016 Toyota Avalon. The manual says that I should use 89-octane gasoline. I like to buy gas at my local Costco store, where the price is always lower than at the neighboring gas stations.

Settling may be fine for some things, but when it comes to your vehicle, especially when you put so much time, energy and money into it, why settle for something less than the best? If you demand the ...

With all the different engine and combustion theories being tested at the Engine Masters Challenge, it made us wonder about the fuel these powerplants were gulping down. For the 2015 event, we had ...

Hondata co-founder Doug Macmillan loves all things automotive data (pun intended), especially if it’s Honda data (pun intended again). After recording 327 horsepower and 359 pound-feet (487 Nm) at the ...