2012 Nissan Altima Gas Tank Size

The 2012 Nissan Altima has a 20-gallon fuel tank capacity across all trims.
Written by Mary Alice Morris
Reviewed by Kathleen Flear
The mid-size 2012 Nissan Altima sedan delivered class, comfort, and style to its drivers but kept one aspect of its build on the simple side. Each trim level came with the same 20-gallon gas tank. 
If you want to find out more about the 2012 Nissan Altima gas tank size and how to verify it for yourself, keep reading.
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comparison shopping app, has the complete guide to your Altima’s fuel tank capacity. Also, you’ll find tips on how to save on
Nissan Altima car insurance costs
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How big is the gas tank on a 2012 Nissan Altima?

The Altima has built up a solid following over the years for being a reliable and comfortable sedan with plenty of cargo space. The 2012 Nissan Altima is so roomy that its tank size is bigger than most mid-size sedans at 20 gallons—a plus if you don’t like stopping often to fill up. 

How to check your 2012 Nissan Altima’s gas tank size

Not sure you believe us that your 2012 Altima holds a whopping 20 gallons? You can see for yourself with one of these methods:

Measure the gas tank

If you want the proof before your eyes, you can actually measure your own gas tank! You’ll need to shimmy underneath your car with a measuring tape, writing utensil, paper, and calculator. Once there, measure the Altima’s gas tank width, length, and height in inches. 
Then, multiply those three figures together. The total you get should then be divided by 231 (that’s how many cubic inches are in a gallon). The final figure will tell you how many gallons the gas tank can hold. 

Check your owner’s manual

If you can find the owner’s manual, look at the index and find “fuel tank” or “gas tank.” Then turn to the indicated section to read up on its capacity. 

Drive till empty, then fill it up

If you’re a bit of a risk-taker, you can drive your 2012 Altima until the tank is close to empty. Then fill it up and see how many gallons it takes. This isn’t the most accurate way to measure your tank, but it will get you pretty close. Be careful to not cut it too close and end up driving on fumes. 

How to save on fuel costs in a 2012 Nissan Altima

The 2012 Nissan Altima is fairly efficient for a mid-size sedan, getting up to 23 mpg in the city and as much as 32 on the highway. But over time, your car’s fuel efficiency can decrease. To save money on gas in your Altima, try these tips:
  • Keep a
    maintenance schedule
    . Getting your routine services done, like regular oil changes, filter changes, and tire rotations can actually help your car’s fuel efficiency!
  • Drive slower. A slower pace means using less fuel, so if you’re not in a huge rush, take it easy on the gas pedal and enjoy better gas mileage in your 2012 Altima.  
  • Don’t idle. It’s not necessary, it’s bad for the environment, and it wastes a lot of gas!

How to optimize your Altima’s insurance coverage

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