2005 Honda Civic CNG

1.7L 4-cyl · CVT (continuously variable) · FWD

Natural gasCNGCompact Cars

Official EPA record #21527 from FuelEconomy.gov · data 2026-07-26 · every assumption below is yours to edit. How this is computed

Per month

$105.58

Per year

$1,267

Per mile

10.6¢/mi

5-year total

$6,335

sedan body style — not this exact model

Notes & official EPA estimate

428 GGE of natural gas / yearnatural gas @ $2.96/GGEAt $3.96/GGE: $141.25/mo

A mile road trip costs about $31.80 in energy.

Natural-gas MPG is measured in gasoline-gallon equivalents (GGE); the default price is the official national average per GGE.

Official FuelEconomy.gov estimate: $1,600/year — assumes 15,000 miles/year and EPA price assumptions. The figures above use your inputs instead.

Compare with another vehiclePrices: EPA national averages, Jul 24, 2026 — override anytime.

At 12,000 miles per year (55% city / 45% highway) with EPA national-average prices, this 2005 Honda Civic CNG costs about $105.58 per month in fuel — $1,267 per year, 10.6¢/mi, $6,335 over five years.Assumptions are editable below. Prices as of July 24, 2026 · EPA vehicle record #21527. EPA figures are laboratory estimates; real-world cost varies with driving conditions, weather, and where you buy energy.

Honda Civic: running costs for every model year →

Official EPA efficiency

Measure	Value
City miles per GGE	26
Highway miles per GGE	31
Combined miles per GGE	28

Natural-gas economy is measured in gasoline-gallon equivalents (GGE), not gallons of gasoline.

Official EPA estimates

Estimate	Value
Official annual fuel cost (15,000 mi/yr)	$1,600/yr
Tailpipe CO₂	251 g/mi
EPA smog rating (SULEV II)	9/10

Source: U.S. EPA / DOE FuelEconomy.gov, vehicle record #21527 (record updated 2013-01-01). Snapshot processed 2026-07-26; page data last changed 2013-01-01.

View this record on FuelEconomy.gov

Related configurations

Same year, same family

Adjacent model years