2018 Kia OptimaFuel Economy & MPG Ratings

Gasoline Large CarsFront-Wheel Drive

City

MPG

Highway

MPG

Combined

MPG

Trim Comparison

Automatic (AM7)

Regular

City

Hwy

Comb

Fuel cost: $2,200/yr

Automatic (S6)

Regular

City

Hwy

Comb

Fuel cost: $2,400/yr

Automatic (S6)

Regular

City

Hwy

Comb

Fuel cost: $2,700/yr

Trim	Engine	City	Hwy	Combined	Fuel Cost/yr
Automatic (AM7)	Regular	28	37	31	$2,200
Automatic (S6)	Regular	24	34	28	$2,400
Automatic (S6)	Regular	22	31	25	$2,700

Annual Fuel Cost

$2,200

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

5-Year Fuel Savings

$1,000

vs. average new vehicle

EPA Fuel Economy Score: 7/10

GHG Score: 7/10

Environment

CO₂ Tailpipe Emissions: 286 g/mile
Annual Petroleum Consumption: 9.6 barrels

Specifications

Engine: 2.4L 4-cyl
Transmission: 6-speed Automatic
Drivetrain: FWD
Body Style: Sedan

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

Engine & Efficiency Details

Source: EPA fueleconomy.gov

Engine Size: 1.6L, 4-cylinder
Induction Type: Direct Injection
Fuel Type: Regular Gasoline

Annual Fuel Cost by State

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

National AvgEPA default

$4.490/gal$2,173/yr

California

$5.957/gal$2,882/yr

Texas

$3.888/gal$1,881/yr

Florida

$4.136/gal$2,001/yr

New York

$4.522/gal$2,188/yr

Ohio

$4.510/gal$2,182/yr

Washington

$5.591/gal$2,705/yr

Colorado

$4.618/gal$2,235/yr

Minnesota

$4.344/gal$2,102/yr

Massachusetts

$4.448/gal$2,152/yr

State	Gas Price	Annual Cost	vs. National Avg
National AvgEPA default	$4.490/gal	$2,173/yr	—
California	$5.957/gal	$2,882/yrHIGHEST	+$709
Texas	$3.888/gal	$1,881/yrLOWEST	$-292
Florida	$4.136/gal	$2,001/yr	$-172
New York	$4.522/gal	$2,188/yr	+$15
Ohio	$4.510/gal	$2,182/yr	+$9
Washington	$5.591/gal	$2,705/yr	+$532
Colorado	$4.618/gal	$2,235/yr	+$62
Minnesota	$4.344/gal	$2,102/yr	$-71
Massachusetts	$4.448/gal	$2,152/yr	$-21