When you pilot a 2011 Sonata (or any car, really) up to the gas pump, you’ll want to know how much fuel goes into that tank of yours. Your owner’s manual should have that information. But who knows—maybe you’ve misplaced it, maybe your child uses it as a booster seat—whatever.

If you don’t know your fuel tank capacity, you are in luck.

Jerry

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How big is the gas tank on a 2011 Hyundai Sonata?

The 2011 Hyundai Sonata’s gas tank holds 18.5 gallons. But you might be wondering about the 11 configurations the Sonata offers.

Naturally, there must be a 2011 Sonata with a different size gas tank, right? Nope!

Starting with the base trim GLS and its 2.4-liter four-cylinder engine with a manual transmission, all Sonatas come with an 18.5-gallon tank.

“But what about the Limited PZEV?” we hear you cry.

Same size fuel tank.

“Okay, fine. But the top-trim 2011 model—the

Hyundai Sonata Limited

, with its turbocharged engine and deluxe wine interior—must have a bigger fuel tank… right?”

Wrong. There’s no difference in gas tank size no matter the configuration.

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How to check your 2011 Hyundai Sonata gas tank size

So, maybe you think we’re yanking your crank and aren’t being truthful about the 2011 Sonata’s gas tank size. We can’t all be 2011 Sonata 18.5-gallon evangelists, so we here at Jerry will do you a solid and give you the tools to determine the 2011 Sonata’s gas tank size on your own. (Try not to be disappointed when you come to the conclusion that the 2011 Sonata does indeed hold 18.5 gallons, just like we said.)

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Measure the gas tank

That’s right, whip out a standard HB pencil (or if all you have is a crayon, that will do just fine) and some paper. Or grab one of the darlings of 20th-century engineering—a calculator.

You’ll also need a measuring tape. Then, get measuring and calculating!

To get the correct capacity, multiply the tank’s length, width, and height. Divide that result by 231 (the number of cubic inches in a gallon), and you’ll have your answer.

Check your owner’s manual

If you don’t like performing rudimentary mathematics with the ancient aforementioned tools, just pop the glove box and grab your owner’s manual (another even more archaic form of communication), and look for phrases such as “fuel tank capacity”. Easy peasy.

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Are Hyundais expensive to maintain?

Drive till empty, then fill it up

So, you don’t have a calculator or measuring tape, and your owner’s manual has mysteriously disappeared (or your 5-year-old is wearing a very odd-looking “hat”). Now, you’ve got no choice but to drive your 2011 Sonata until it's literally running on empty, or your gas gauge hits “E.”

Hopefully, you didn’t run your Sonata dry in the middle of the Mojave Desert, because you’ll need to be close to a gas pump for this to work. Fill ’er up, and note how many gallons it takes.

While this won’t give you an exact fuel tank capacity, it will be a reasonably accurate approximation, landing you right around 18.5 gallons.

We here at Jerry would never say we told you so… but we told you so.

MORE:

How far can you drive on an empty tank of gas?

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How to save on fuel costs in a Hyundai Sonata

With regular gasoline, the 2011 Hyundai Sonata is rated for 26 miles per gallon combined for both city and highway driving. This is a decent figure, but comparable contemporary sedans will likely score better on fuel-efficiency ratings.

Still, no matter what you drive, you’ll want to ensure your car stretches its gas mileage as much as possible—gas isn’t cheap, after all.

That said, here are a few ways you can stretch your fuel dollars:

Regular maintenance: One of the best ways to keep your car’s fuel efficiency ratings up is to

schedule regular car maintenance

—healthy vehicles are efficient vehicles

Drive carefully: Sudden acceleration and harsh braking can seriously dampen your car’s fuel efficiency ratings over time

Don’t idle, even in the cold: Idling won’t warm your car up any quicker than simply driving it. And this harmful practice not only wastes gas, but it also hurts the environment!

MORE:

Hyundai tune-up cost

How to optimize your Sonata insurance coverage

Trying to keep your fuel costs low can feel like a never-ending battle. But keeping your

car insurance

costs low doesn’t have to be—not when using

Jerry

The Jerry app is free to download, and sign-up takes just 45 seconds. Then, Jerry gets to work comparing quotes from more than 50 top insurers to find the best deals. Once you pick your new policy, Jerry will finalize it and help to cancel your old insurance.

Best of all? The average Jerry user saves more than $800 per year on car insurance!

“I was looking for a liability insurance plan for my truck until I can afford more coverage.
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