Since its debut almost 30 years ago, the Nissan Altima has been a top pick for drivers looking for a reliable mid-size sedan with a bit of an edge to it as well. In fact, the Altima was Nissan’s best-selling car for years until it was replaced by its crossover sibling, the

Nissan Rogue

Your vehicle’s gas tank size can be found in your owner’s manual. If you no longer have it, no need to worry!

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How big is the gas tank on a 2008 Nissan Altima?

With its 20-gallon tank, the 2008 Nissan Altima is much larger than your average gas tank, which is typically between 13 and 16 gallons. The Altima’s gas tank size is the same no matter what engine you get. There are two available engine choices:

2.5-liter inline 4-cylinder engine

3.5-liter V6 engine

The

2.5

, the

2.5 S

, and 2.5 SL all carry the 2.5-liter inline 4-cylinder engine. But if you’re looking for a little more roar under your hood, the 2008 Nissan Altima’s higher level trims or packages, like the

3.5SE

and

3.5SL

, deliver with their V6 engine capable of 270-hp.

How to check your 2008 Nissan Altima’s gas tank size

Still unsure about the exact amount of gallons your Altima can hold? Below are several simple ways to figure out the gas tank size so you’re prepared when you pull up to the pump.

Check your owner’s manual

You can figure out the size of your gas by referring to your owner’s manual. Search for “gas tank” or “gas tank capacity” and you should be able to find the exact amount your car will hold.

Measure the gas tank

Grab a calculator and measuring tape to figure out the gas tank capacity on your own. To determine the size of your tank, first multiply its width, length, and height and then divide that figure by 231 (which is the number of cubic inches in a gallon).

Drive till empty, then fill it up

As a last resort, you can estimate yourAltima’s fuel tank capacity by simply driving until your gas light illuminates. Most cars have a little more remaining in the tank once the light comes on, but filling up at this point should give you a fairly good idea of how much your gas tank holds. Just don’t push your luck by driving too long after your gas light turns on!

MORE:

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

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How to save on fuel costs for a Nissan Altima

The 2008 Nissan Altima has a fuel-efficiency rating of about 23 city/32 highway mpg. The 2008 Altima may have had decent gas mileage for its time, but today, it falls way short of what drivers are looking for. If you're still driving an Altima from the aughts, here are a few tips to save at the pump:

Keep up with your Altima’s maintenance. Fight back against wear and tear on your Altima and prevent dips in your fuel economy by making an effort to take care of your car.

Drive carefully. Ease off the gas pedal to maintain a steady fuel consumption. Also, try to avoid sudden braking or accelerating.

Don’t idle, especially in cooler temperatures. Idling may be a quick way to warm up your vehicle—especially in colder weather—but it comes at the expense of wasting quite a bit of gas! Instead, gently drive your Altima to warm it up.

How to optimize your Altima’s insurance coverage

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