The size of your Mazda CX-9’s gas tank depends on its model year. Models from 2016 and newer have a 19.5-gallon tank, while models from 2007 to 2015 have a larger 20.1-gallon tank.

Understanding exactly how much gas your Mazda can hold is an essential part of budgeting for your vehicle’s ownership costs. After all, fuel is a major expense, and predicting what you’ll spend before you get to the pump is a great way to avoid shock and surprise.

Here with all of the measurements pertaining to the Mazda CX-9’s gas tank—and a tip to reduce your

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How big is the gas tank on a Mazda CX-9?

While some vehicles have very different fuel capacities depending on engine size or

trim level

, your Mazda CX-9’s gas tank size depends on a singular factor: its model year.

The Mazda CX-9 was introduced for the 2007 model year and has only spanned two generations since then.

The first generation CX-9 (2007-2015) has a fuel tank capacity of 20.1 gallons. When the SUV was redesigned for the 2016 model year, the gas tank shrunk to 19.5 gallons in volume.

How to check your Mazda CX-9’s gas tank size

No matter what kind of car you drive, there are a few methods for checking its fuel tank capacity. Here’s what we suggest:

Measure the gas tank

All it takes is a tape measure and a little bit of mathematical prowess. Simply multiply the width, length, and height of the tank and divide the result by 231 (that’s the number of cubic inches in a gallon).

Check your owner’s manual

Your owner’s manual contains lots of essential information regarding your vehicle’s specs—including its gas tank size. If you’ve misplaced your owner’s manual, you might also wish to take a peek inside your Mazda’s fuel tank cover. There may be a sticker that includes your gas tank’s size.

Drive till empty, then fill it up

If all else fails, you could estimate your car’s fuel tank capacity by simply driving around until your car is on “E.” Then, head to the gas station and fill your gas tank to its max capacity. Whatever number shows on the fuel pump is a pretty good approximation of what your vehicle can hold.

Just be careful when using this method—you wouldn’t want to end up stalled on the side of the road.

MORE:

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

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How to save on fuel costs in a Mazda CX-9

The 2022 Mazda CX-9 has a fuel efficiency rating of up to 22 mpg in the city and 28 mpg on the highway—but you’ll have to do a little bit of work to ensure that your SUV is always reaching these ideal numbers.

Keep up with maintenance. Skipping

oil changes

and other

standard maintenance procedures

can cause your fuel economy to dip.

Drive carefully. Harshly accelerating burns through gas much faster than slowly easing your car up to speed.

Avoid idling, especially in cold weather. Just drive your SUV gently and carefully to get it up to normal operating temperature in the winter—don’t let it idle in your driveway or garage.

How to optimize your CX-9’s insurance coverage

Saving on gas isn’t the only way to cut your Mazda’s cost of ownership. Did you know that

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