2005 Honda Civic CNGFuel Economy & MPG Ratings

Gasoline Compact CarsFront-Wheel Drive

City

MPG

Highway

MPG

Combined

MPG

Trim Comparison

Automatic (variable gear ratios)

CNG CNG

City

Hwy

Comb

Fuel cost: $1,600/yr

Trim	Engine	City	Hwy	Combined	Fuel Cost/yr
Automatic (variable gear ratios)	CNG CNG	26	31	28	$1,600

Annual Fuel Cost

$1,600

Based on gasoline at $3.67/gal, 15,000 miles/year

5-Year Fuel Savings

$4,000

vs. average new vehicle

EPA Fuel Economy Score: -1/10

GHG Score: -1/10

Environment

CO₂ Tailpipe Emissions: 251 g/mile
Annual Petroleum Consumption: 0.1 barrels

Specifications

Engine: 1.7L 4-cyl
Transmission: Automatic
Drivetrain: FWD
Body Style: Sedan
GVWR: Class 1 (≤6,000 lbs)

Source: EPA fuel economy data & NHTSA vPIC. Specifications reflect the most common trim configuration.

Engine & Efficiency Details

Source: EPA fueleconomy.gov

Engine Size: 1.7L, 4-cylinder
Fuel Type: Natural Gas

Annual Fuel Cost by State

Prices as of week ending May 18, 2026 · Source: EIA

National AvgEPA default

$4.490/gal$2,405/yr

California

$5.957/gal$3,191/yr

Texas

$3.888/gal$2,083/yr

Florida

$4.136/gal$2,216/yr

New York

$4.522/gal$2,423/yr

Ohio

$4.510/gal$2,416/yr

Washington

$5.591/gal$2,995/yr

Colorado

$4.618/gal$2,474/yr

Minnesota

$4.344/gal$2,327/yr

Massachusetts

$4.448/gal$2,383/yr

State	Gas Price	Annual Cost	vs. National Avg
National AvgEPA default	$4.490/gal	$2,405/yr	—
California	$5.957/gal	$3,191/yrHIGHEST	+$786
Texas	$3.888/gal	$2,083/yrLOWEST	$-322
Florida	$4.136/gal	$2,216/yr	$-189
New York	$4.522/gal	$2,423/yr	+$18
Ohio	$4.510/gal	$2,416/yr	+$11
Washington	$5.591/gal	$2,995/yr	+$590
Colorado	$4.618/gal	$2,474/yr	+$69
Minnesota	$4.344/gal	$2,327/yr	$-78
Massachusetts	$4.448/gal	$2,383/yr	$-22