Which gas should I use?

I just bought a brand new 2017 Honda Accord sport. Should I use regular or premium gas? Can some tell me what regular plus gas is and if I should use it or not

Look in your owner's manual it will state which octane to use. My guess is regular unleaded.

Read your owners manual. It should be in the glove box.

If you paid under 100,000$ it should run fine on Regular.
Your new car owners manual, or even the Gas Cap (or label on the gas door) should say as well.

Look at your brand new owner's manual.

Regular (cheapest) gas.

Regular unleaded is spec'd

Premium will do nothing but cost you more per mile.

Your Honda Accord Sport is neither a premium recommended or premium required automobile. The use of of a higher octane gasoline, higher than 87 octane, would not give you better performance or fuel economy. It would simply be a waste of cash.

It tells you what to use either on the gas filler door, the instrument cluster or in the owners manual.

Read the owners manual, there's a wealth of information about your new car that will help you keep it running well for years to come.

Your poop and pee