Can I use premium gas in my Hyundai Sonata hybrid vehicle?

You can use premium, but if the manufacturer doesn't specify that it's required and the engine has no knock, why bother?

http://www.hyundaisonatamanual.com/sonata-3-fuel_requirements.html Pasted from owners manual: Introduction / Fuel requirements Your new vehicle is designed to use only unleaded fuel having a pump octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher. Other words regular 87 is fine but they used premium 91 during engine testing

engine may run hotter may start over heating or may not

Ethenol free high test is why,. All of our engines are being affected by Ethenol in our gas is why I'm using it

I have a 2013 hyundai sonata what kind of gas can I use in my car

Absolutely! While many will argue that it may not be needed - I personally have found that the 2.4L Sonata that I'm driving runs extremely smooth on Chevron Premium. This last tank, I'm trying a tank full of Sam's Club station premium - and, so far, no issues. But with GDI - it's good to consider "top tier" fuel to reduce the amount of deposits - especially on valves over time since GDI engine designs are more prone to carbon build up than the multi-port fuel injection designs with other types of engines.

Higher octane lets the computer advance timing. Possible hp gain or torque. My volvo would use 87 but jammed on 92

I have av2018 sonata and I'm not sure if I should put regular gas in it.

Any fuel is fine, but if you’re using regular and get ping in the Sonata style GDI motors, it’s likely do to another issue. Change out your MAP sensor along with the O2 sensors. Also check both intake and exhaust VVT solenoids as they too can effect timing. A Injector(s) can also be failing. It may seem counterintuitive but, if you have any issues with any of these, it may be a good practice to change out your spark plugs afterwards evening if you just did so. Change out your coils every 80,000 to 100,000 miles and you should be fine. Always remember premium fuel ignites slower. This is why you get reduced ping, but the drawback is potentially unburned fuel in the exhaust, which can result in superheating the catalytic converter and causing premature failure.