Just as important as knowing approximately how many miles per gallon you can get from your car, it is always good to know about your car’s fuel tank capacity. That said, how many of us can actually say we know how much gas our car can hold?

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How big is the gas tank on a 2006 Jeep Wrangler?

If you’ve got a 2006 Jeep Wrangler, you have a 19-gallon gas tank.

How to check your 2006 Jeep Wrangler’s gas tank size

Don’t trust us? Or maybe you just want to double-check for yourself. Whatever the case, here are some tips you can use to double-check our numbers on your Jeep Wrangler’s gas tank, or find the tank capacity on any other vehicle.

Measure the gas tank

Get ready to get dirty because this method requires you to slip under your Jeep—but first, grab a measuring tape and a calculator, and prepare to flex those high school math skills.

Multiply the width, length, and height of your gas tank. Then, take the product and divide it by 231, which is the number of cubic inches in a gallon.

Check your owner’s manual

2006 isn’t too old, so hopefully, your owner’s manual is still in your glove compartment. Your gas tank’s capacity will be listed under “fuel tank capacity” or something similar.

Drive till empty, then fill it up

If you really like a challenge—and you’re feeling lucky—just keep driving until you’re Jeep’s on Empty. Once you hit E hopefully there’s a gas station nearby. However many gallons it takes to fill up is how many gallons your tank can hold. Of course, this won’t be a perfect measure, but some of us just can't be bothered to do things the easy way.

MORE:

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

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How to save on fuel costs in a Jeep Wrangler

A 2006 Jeep Wrangler has seen 16 years of driving, so it’s likely to be slipping a little in terms of performance. No need to worry, though. We’ve got a few suggestions for how to get your Jeep back in fighting trim and keep it there.

Keep up with maintenance. Establishing and sticking with a

basic car maintenance schedule

is one of the easiest and best ways to keep your Wrangler running at peak efficiency.

Drive carefully. Speeding and quick acceleration decrease your fuel efficiency. Avoid both or pay the price.

Avoid idling, especially in cold weather. Despite what you may have heard, you don’t need to ask “

how long should I warm up my car before driving?

” No matter the weather, warming up your car does very little other than waste gas.

How to optimize your Jeep Wrangler’s insurance coverage

Pulling up to the pump to fill up your Jeep Wrangler—or any vehicle you might be driving—doesn’t have to be a nightmare if you take steps to ensure you’re getting the best fuel economy you can. The same can be said for taking steps to avoid overpaying for

car insurance

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On average, Jerry users save over $800 a year on car insurance—that’s a whole lot of extra gas money!