2008 Honda Civic Gas Tank Size

The 2008 Honda Civic gas tank carries 12.3 or 13.2 gallons depending on the powertrain you have. Click here to learn more!
Written by Mary Alice Morris
Reviewed by Jessica Barrett
Depending on the powertrain, your 2008
Honda Civic
has a gas tank size of 12.3 or 13.2 gallons. However, if you own the 2008
Civic GX
, which is powered by compressed natural gas (CNG), then your gasoline gallon equivalent (GGE) depends on the tank’s PSI. 
With so many variations in sizes, models, and fuel types to unpack, figuring out your car’s gas tank size can feel unnecessarily challenging. To make it easier for you,
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How big is the gas tank on a 2008 Honda Civic?

The size of your 2008 Honda Civic’s gas tank will depend on its trim and powertrain. The 2008 Civic had several powertrain options to pick from, including ICE, hybrid, and one powered by natural gas. 
The 2008
Civic Hybrid
has a gas/electric powertrain with a 1.3-liter 4-cylinder engine and a 12.3-gallon gas tank. Most of the other trims, including the
, and
—whether in the sedan or coupe style—used a 1.8-liter 4-cylinder engine fueled by a 13.2-gallon tank. The
Civic Si
coupe upgraded to a 2.0-liter 4-cylinder engine but maintained the 13.2-gallon gas tank
The GX model powered by compressed natural gas (CNG) holds the gasoline equivalent of 7.2 gallons at 3,000 psi and 8 gallons at 3,600 psi

How to check your 2008 Honda Civic’s gas tank size

If you’re still not sure that we’ve pinned down the right size for your Civic’s gas tank, there are several ways you can check for yourself. Here’s how:

Measure the gas tank

Grab your calculator, a piece of paper, and a pencil, along with your measuring tape. Get under your car and measure the gas tank’s width, length, and height—be sure to record the measurement in inches. Then multiply the figures together. 
Take that sum and divide it by 231. (That’s the number of cubic inches in a liquid gallon.) This will give you your 2008 Civic’s gas tank capacity in gallons!

Check your owner’s manual

Dig out the 2008 Honda Civic owner’s manual to find the indicated fuel tank capacity. Or, if you can't find it, look up the PDF version on
Honda’s website

Drive till empty, then fill it up

If you’re about due for a fill-up anyway, you could wait until your gas gauge hits the E line and then see how many gallons you get at the pumps. Just try to make sure you don’t run completely out of gas before you make it to the gas station. 
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How to save on fuel costs in a Honda Civic

The Honda Civic is already fairly fuel-efficient, but there are steps you can take to make sure it stays that way. 
  • Stick to your
    maintenance schedule
    . Keeping up with your oil changes, tire rotations, and other regular services can help your car run as efficiently as possible.
  • Lay off the gas pedal. Driving at a moderate pace, using your cruise control, and coasting to a stop instead of hitting the brakes are all ways to maximize fuel efficiency.
  • Don’t idle. Leaving your car running while parked, whether it’s to warm it up or let the air conditioner cool it off, wastes a lot of gas over time.

How to optimize your Civ’s insurance coverage

By now, you should be well-versed in your 2008 Honda Civic fuel tank capacity. But how well-versed are you on its insurance policy? If you haven’t taken a close look at your policy and rates lately, now is probably a good time to do so.
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