Regardless of trim level or engine option, the 2006 Nissan Altima’s fuel tank capacity is 20 gallons.
Knowing how much fuel your sedan can handle is important before you roll up to the gas station. While your owner's manual contains your vehicle’s gas tank capacity, there’s a chance you might have lost it since 2006.
How big is the gas tank on a 2006 Nissan Altima?
Since the Nissan Altima debuted in 1993, the midsize sedan’s gas tank capacity has ranged from 16 gallons to 20 gallons. But the 2006 Altima has a larger-than-average fuel tank capacity at 20 gallons no matter which trim level or engine configuration you have
How to check your 2006 Nissan Altima’s gas tank size
If you’re not sure what your Altima’s fuel tank size can accommodate, there are a few easy ways to figure it out on your own before you head over to the pump.
Measure the gas tank
If you don’t mind calculating the numbers yourself, then locate your trusty calculator and measuring tape. Check the length, width, and height of your tank, multiply these values together, then divide that number by 231—the number of cubic inches in a gallon—to figure out your precise gas tank size in gallons.
Check your owner’s manual
Measuring not your thing? If you still have your owner’s manual on hand, you can easily scan the table of contents or index to find the “gas tank capacity” or “fuel tank capacity” to discover the exact manufacturer measurement of your tank capacity.
Drive till empty, then fill it up
If either of the previous options doesn’t work for you and you’re willing to take a gamble, then you can simply drive your Altima until your fuel tank is nearly empty and refill it back up. This method might not give you an accurate measurement, but you’ll be able to calculate the approximate size of your fuel tank. Just don’t drive on empty for too long though!
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How to save on fuel costs in a Nissan Altima
When equipped with a four-cylinder engine and automatic transmission, the 2006 Nissan Altima is rated for about 23 mpg combined city/highway. On the other hand, an Altima with a V6 engine and automatic transmission will take you down a couple of pegs to 21 mpg combined.
While the Altima isn’t the most fuel-efficient midsize sedan around, there are still a few simple ways to save at the pump. Check out these tips if you’re looking to save on fuel costs:
Keep up with maintenance. Protect your Altima from wear and tear and stick to a regular maintenance schedule
to prevent your fuel economy from plummeting. Drive carefully. Don’t drive too harshly now! Step lightly on your gas pedal to keep your fuel consumption low.
Avoid idling, especially in cold weather. Instead of allowing your sedan to idle when it’s cold out, try driving it around slowly to warm it. Otherwise, idling will quickly drink up the gas in your Altima before you know it.
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