2015 Hyundai Sonata Gas Tank Size
All trim levels of the 2015 Hyundai Sonata have a gas tank capacity of 18.5 gallons.
Written by Amber Reed
Reviewed by Jessica Barrett
The 2015 Hyundai Sonata came in several trim levels and had two engine choices, but the gas tank size on all versions was the same: 18.5 gallons.
It’s more than just a random bit of car knowledge—how much gas your car takes is crucial when you hit the station to fill up! You can find this detail in your owner's manual, but if you’ve lost iT—there’s no need to worry.
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Find insurance savingsHow big is the gas tank on a 2015 Hyundai Sonata?
The Hyundai Sonata is a midsize sedan that has been on the market since 1985. People who bought a Sonata in 2015 had several trim levels to choose from and could pick either a 2.4-liter inline-four engine or a 2.0-liter turbocharged inline-four engine.
Regardless of trim level or options, all 2015 Hyundai Sonatas had a gas tank size of 18.5 gallons.
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How to check your 2015 Hyundai Sonata’s gas tank size
Feel like checking our math? Good for you! Here’s some fuel for thought when determining the size of your 2015 Hyundai Sonata’s gas tank.
Measure the tank
If you’re the hands-on type, you can measure the tank and crunch the numbers yourself! First, get your measuring tape and a calculator (or pen and pencil for extra credit). Then, measure and multiply the length, height, and width of the tank. Your answer is the tank’s volume in cubic inches.
Next, divide that number by 231, which is the number of cubic inches in a gallon. And there you have it—your tank’s capacity in gallons!
Look in the owner’s manual
If you still have your owner’s manual kicking around somewhere (or you can find a copy online), that’s a safe bet. Look for a section on “capacities” or “specifications,” and you should be able to find the answer.
Drive until the tank’s empty, then fill up
Finally, you can take the riskier real-world option: drive until your tank is empty and head to the gas pump to see how much it takes to fill the tank. Avoid the temptation to push it too far—unless you’ve got a full gas can on hand!
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How to save on fuel costs in a Hyundai Sonata
The 2015 Sonata was exclusively front-wheel drive and would get 24/35/28 mpg in city/highway/combined driving with the base engine. With a turbocharged engine, it got a slightly lower 21/31/25 mpg.
No matter what, everyone wants to maximize their mileage! Here are a few tips to help you take your Sonata the farthest:
- Stay on top of routine maintenance. It may be tempting to skip maintenance to save money, but it costs you more in the long run and results in decreased fuel economy.
- Take it easy on the gas pedal. Keeping your acceleration smooth and controlled is not just good practice, but it also helps keep your gas consumption low.
- Avoid idling as much as you can. Idling is a massive waste of gas. Too much idling can be hard on an engine.
How to optimize your Sonata’s insurance coverage
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