You've been standing at the pump, finger hovering over the 91 button, half-convinced your engine deserves the good stuff.

A new Consumer Reports study reveals that premium gasoline does not provide better mileage or smoother performance compared to regular fuel in tested luxury SUVs. Testing found no measurable ...

Using the wrong octane gas can affect your car's performance. Here's what happens when you choose regular over premium, and vice versa.

The price displayed above that third button on the gas pump averaged more than $5.40 for several days this spring. American drivers still couldn't get enough. Premium gas now costs around a buck a ...

Drivers across the U.S., including some behind the wheel of performance vehicles, are switching from premium gasoline to regular in a search for savings as fuel prices remain elevated. Between June 22 ...

As the spread between premium and regular hits a record level, many U.S. motorists are cutting costs by choosing the cheaper fuel. Bloomberg reports that the switch is increasingly visible even among ...

While the 6.2L V8 L87 gasoline engine doesn't require premium fuel, it is recommended. Get the full rundown on GM's ...

Pull up to a gas pump and you’ll see several options, presented in a row with an ascending price per gallon. Whether regular (87 octane in most states), midgrade (89), or premium (91 to 94), your ...

WIth diesel fuel at all-time highs, have you thought about putting regular petrol in your tank? Here is why you shouldn't do ...

Many people aren't aware that the Lexus brand is a division of Toyota. That may come as a surprise since Toyota has a reputation of being budget-friendly, while the Lexus name is associated with ...