2015 Jeep Grand Cherokee Gas Tank Size

The 2015 Jeep Grand Cherokee has a gas tank capacity of 24.6 gallons.
Written by Amber Reed
Reviewed by Kathleen Flear
All five trim levels of the 2015 Jeep Grand Cherokee have a gas tank capacity of 24.6 gallons. 
Knowing just how much gas it takes to fill up your Jeep Grand Cherokee is a small but important detail, especially in these days of rising gas prices. If you’ve misplaced your owner’s manual and are curious as to just what a full tank of gas means,
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Read on for a guide to the gas tank size of your 2015 Grand Cherokee from the
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How big is the gas tank on a 2015 Jeep Grand Cherokee?

The popular Jeep Grand Cherokee is designed for adventure and has a gas tank capacity to match. There were five trim levels and plenty of options available in 2015, and all trim levels were powered by a 3.6-liter V6 engine with a rear-wheel or four-wheel drive powertrain. 
Regardless of your 2015 Jeep Grand Cherokee’s trim and engine configuration, the gas tank capacity will be the same—24.6 gallons.

How to check your 2015 Jeep Grand Cherokee’s gas tank size

If you’d like a little more information or just want to check for yourself, there are a few ways that you can determine the volume of your Grand Cherokee’s gas tank. 

Measure the gas tank

Like to do the math yourself? Good for you! You’ll need a measuring tape and a calculator. To get the tank’s capacity, just multiply the width, length, and height of the tank (the volume in cubic inches) and divide the result by 231 (the number of cubic inches in a gallon). This will give you the tank’s volume in gallons. 

Check your owner’s manual

You can also determine the size of your gas tank by looking it up in your owner’s manual. Look under “fuel tank capacity” or similar phrases to find the official number from the manufacturer. 

Drive till empty, then fill it up

No manual? No measuring tape? Like to just figure things out in the real world and see what happens? Another method is to drive until the fuel gauge is on “E”, then fill it up. This won’t be precise, but it’ll give you a general idea of how much your tank can hold in a real-world scenario. Just don’t tempt fate and drive for too long on empty!
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How to save on fuel costs in a Jeep Grand Cherokee

In general, you can expect to get around 19 to 20 combined mpg from your Grand Cherokee. Rear-wheel-drive powertrains will get slightly better fuel economy than their four-wheeled counterparts. 
Either way, you’ll want to make the best of your Jeep’s fuel economy, and here are a few tips to help out: 
  • Keep up with
    routine maintenance
    . Letting wear and tear accumulate is a bad idea for a lot of reasons—one of which is that it will cause your fuel economy to suffer.
  • Drive carefully. Gentle acceleration will keep your fuel costs steady and low, and also not freak out your passengers.
  • Avoid idling, especially in cold weather. Idling burns a lot of gas for no real reason, so try to avoid it whenever possible. Drive your Jeep gently on cold mornings to warm it up rather than letting it run for several minutes. 

How to optimize your Jeep’s insurance coverage

Jeep Grand Cherokees come with a lot of options, and it’s important to remember to include choosing the right
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