Reality Check - 2007 Honda Civic GX Long-Term Road Test

2007 Honda Civic Long-Term Road Test

  • Full Review
  • Pricing & Specs
  • Road Tests
  • Comparison
  • Long-Term (10)

2007 Honda Civic GX: Reality Check

March 28, 2008

In the previous post, I laid out how we were going to be computing fuel economy in the 2007 Honda Civic GX now that we're using a home fueling unit that doesn't provide a way of measuring the amount of compressed natural gas being pumped.

After a lot of calculating, estimating and talking to Honda engineers, we decided to assign a value of .368 gallon-equivalent to each bar on the Civic GX's fuel gauge. Thus, if we were down 10 bars and refilled overnight, we'd figure we'd pumped 3.68 gallons.

To double check, I ran the tank down by 12 bars this morning and pulled into the neighborhood Clean Energy retail CNG pump to fill it back up on a pump that does measure gallonage.

At our assigned value of .038 gallon per bar, I expected to pump 4.416 gallons

The readout on the pump said we got 4.471 gallons when the tank registered full.

So our "best guesstimate" method of figuring fuel use was off by just fifty-five thousandths of a gallon (0.055 gallon, to be precise).

John O'Dell, Senior Editor, Green Car Advisor @14,192 miles

Leave a Comment

Past Long-Term Road Tests

Have a question? We're here to help!
Chat online with us
Email us at
*Available daily 8AM-5PM Pacific
Call us at 855-782-4711
Text us at ED411