2005 Nissan Altima Gas Tank Size

A 2005 Nissan Altima has a gas tank size of 20 gallons, no matter what engine or trim level you choose.
Written by Cassandra Hamilton
Reviewed by Jessica Barrett
The 2005 Nissan Altima’s gas tank size is 20 gallons. This is standard across all models, regardless of your trim level or engine choice.
If you own a car, you already know how important it is to keep a comprehensive car ownership budget. You’ll need your monthly fuel costs to complete this budget—and to find ways to
save on your car expenses
—but how can you figure out your fuel costs without knowing what your fuel tank capacity is?
You can get this info from the owner’s manual, but what if that manual is long gone? Lucky for you, the
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How big is the gas tank on a 2005 Nissan Altima?

The Nissan Altima is a favorite among working people who are looking for a practical, dependable car whose price and maintenance costs won’t break the bank. Your Nissan Altima fuel costs will vary depending on the trim level and engine you have, but it should be pretty easy to compare different models since their fuel tank sizes are the same.
The 2005 Nissan Altima gas tank size is 20 gallons. Depending on your mileage, one tank of gas could take you from 480 to 620 miles!

How to check your 2005 Nissan Altima’s gas tank size

If you like to get your hands dirty and would rather check your 2005 Nissan Altima’s gas tank size for yourself, there are a few methods you can use. Follow one of these routes below to find the Nissan Altima fuel tank capacity.

Measure the gas tank

You’ll need a tape measure and calculator for this method (unless you’re a major math enthusiast). You need the width, length, and height of your gas tank. Multiply these numbers together and divide by 231 (the number of cubic inches in a gallon). The result is your Nissan Altima fuel tank capacity.

Check your owner’s manual

Your owner’s manual should have a phrase like “fuel tank capacity” or similar to denote where you can find the information you need on your 2005 Nissan Altima’s gas tank size.

Drive till empty, then fill it up

Are you a risk taker who likes to live on the edge? You could always drive until your fuel gauge hits “E” and then fill up to find your Nissan Altima’s fuel tank capacity. Just be sure you don’t run out of gas! Your measurement won’t be super accurate, but it’ll be close enough to give you a general idea of your 2005 Nissan Altima’s gas tank size.
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How to save on fuel costs in a Nissan Altima

When talking about car budgets, we need to consider the Nissan Altima’s fuel economy. A 2005 Nissan Altima with a 2.5-L four-cylinder engine gets 23 to 24 mpg combined. A 2005 Altima with the upgraded 3.5-L six-cylinder engine only gets 21 mpg combined.
While this isn’t the worst mileage out there, it leaves a lot of room for improvement when it comes to expenses at the pump. Follow these tips to help save on gas and slash your fuel bill:
  • Perform regular maintenance. Keep up with your car’s maintenance—wear and tear can hurt your mileage. 
  • Drive with caution. It’s not a race. Accelerate slowly and avoid speeding to keep your mileage up. 
  • Don’t let your engine idle, especially in cold weather. Running your car’s engine without moving destroys your mileage. Brave the cold for a few minutes on a winter’s day instead of letting your car warm up first.

How to optimize your Altima’s insurance coverage

Now that you’re saving on your fuel costs, it’s time to move on to the next area of your car budgeting—like your
Nissan Altima car insurance costs
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