2018 Subaru Outback Gas Tank Size

The 2018 Subaru Outback came with just one uniform 18.5-gallon gas tank.
Written by Mary Alice Morris
Reviewed by Jessica Barrett
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Even though it came in four trim levels and with two engine sizes, the 2018 Subaru Outback only had a singular gas tank size of 18.5 gallons.
If you want to know the specifics about the 2018 Outback’s gas tank, or you’d like to find out how to measure it for yourself, you’re in the right place. This guide from
Jerry
, a
licensed insurance broker
and super app, will show you everything you need to know about your car’s fuel tank capacity. And, Jerry can help you save on your
Subaru Outback car insurance
, too!

How big is the gas tank on a 2018 Subaru Outback?

If you were expecting a complicated guide to all the 2018 Outback configurations, rest easy. Subaru kept it simple on the 2018 model by giving each of its four Outback trims the same 18.5-gallon gas tank. 
That means whether you’ve got the 2.5-liter 175-horsepower engine or the 3.6-liter, 256-horsepower option, your fuel tank capacity is the same. What’s different between the two engines, though, is your fuel economy. 
The 18.5-gallon tank will last you a little longer with the Outback’s smaller engine, which gets a combined 28 mpg. The 3.6-liter engine only gets a combined 22 mpg

How to check your 2018 Subaru Outback’s gas tank size

Not sure we’re right about your gas tank size? You can check for yourself with a few easy methods. 

Measure the gas tank

If you don’t mind getting under your car, you can actually measure the tank. 
First, gather the supplies you’ll need: a measuring tape and a calculator. Then, get under your car’s gas tank and measure its width, height, and length in inches
Multiply these numbers together and divide the result by 231, the number of cubic inches per gallon. The resulting number should be how many gallons your tank will hold. 

Check your owner’s manual

You should be able to find your fuel tank size in your vehicle’s owner’s manual. If you’ve lost it or never had a 2018 Outback manual, you can download one from Subaru’s
vehicle resources website

Drive till empty, then fill it up

Driving until the tank is empty may not be the most refined or precise way to measure a gas tank, but it works and will give you a good ballpark estimate of its capacity. Just drive until your fuel indicator is on E, and then fill it up before you run completely out of gas. This should tell you approximately how many gallons of gas your tank can hold.
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How to save on fuel costs in a 2018 Subaru Outback

If you want your 2018 Subaru Outback to run as efficiently as possible, there are a few tips you can put into practice:
  • Stay with your maintenance schedule. Keeping up with a
    regular maintenance schedule
    on your car will not only prolong its life, but it will help it run more efficiently, too. Skipping oil changes, tire rotations, filter replacements, and other routine services can cause your car to burn through more gas. 
  • Slow down. Driving at a slower pace is a great way to drive more efficiently. 
  • Don’t sit idle. If your car is stopped and parked, shut off the engine. Leaving it running, even if just for a few minutes, wastes gas that adds up over time. 

How to optimize your Outback’s insurance coverage

Having an idea of your car’s gas tank size can help you budget and plan for fill-ups, especially when gas prices are on the rise. Another way to help with your expenses is shopping for new
car insurance
with the
Jerry
app.
With Jerry, finding
cheap car insurance
is fast and easy. It only takes about 45 seconds to sign up and get started. Once you do, Jerry will take over the legwork and put together a set of competitive car insurance quotes for you from its network of over 55 top-rated insurance providers. 
Once you find the policy you like, Jerry makes switching over easy. You can do it all from the app on your phone, and Jerry will even help you cancel your old insurance!
“I was looking for a liability insurance plan for my truck until I can afford more coverage.
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made it simple to shop around for the best deal for me. Thank you!” —Jake L.
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