2013 Porsche Boxster SFuel Economy & MPG Ratings

Gasoline Two SeatersRear-Wheel Drive

Photo: John Robert McPherson. CC0. via Wikimedia Commons

City

MPG

Highway

MPG

Combined

MPG

Trim Comparison

Automatic (AM-S7)

Premium

City

Hwy

Comb

Fuel cost: $3,400/yr

Manual 6-spd

Premium

City

Hwy

Comb

Fuel cost: $3,700/yr

Trim	Engine	City	Hwy	Combined	Fuel Cost/yr
Automatic (AM-S7)	Premium	21	29	24	$3,400
Manual 6-spd	Premium	20	27	22	$3,700

Annual Fuel Cost

$3,400

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

5-Year Fuel Savings

$-5,000

vs. average new vehicle

EPA Fuel Economy Score: 6/10

GHG Score: 6/10

Environment

CO₂ Tailpipe Emissions: 372 g/mile
Annual Petroleum Consumption: 12.4 barrels

Specifications

Engine: 3.4L 6-cyl
Transmission: 6-speed Manual
Drivetrain: RWD
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: 3.4L, 6-cylinder
Induction Type: Direct Injection
Fuel Type: Premium Gasoline

Annual Fuel Cost by State

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

National AvgEPA default

$4.490/gal$2,806/yr

California

$5.957/gal$3,723/yr

Texas

$3.888/gal$2,430/yr

Florida

$4.136/gal$2,585/yr

New York

$4.522/gal$2,826/yr

Ohio

$4.510/gal$2,819/yr

Washington

$5.591/gal$3,494/yr

Colorado

$4.618/gal$2,886/yr

Minnesota

$4.344/gal$2,715/yr

Massachusetts

$4.448/gal$2,780/yr

State	Gas Price	Annual Cost	vs. National Avg
National AvgEPA default	$4.490/gal	$2,806/yr	—
California	$5.957/gal	$3,723/yrHIGHEST	+$917
Texas	$3.888/gal	$2,430/yrLOWEST	$-376
Florida	$4.136/gal	$2,585/yr	$-221
New York	$4.522/gal	$2,826/yr	+$20
Ohio	$4.510/gal	$2,819/yr	+$13
Washington	$5.591/gal	$3,494/yr	+$688
Colorado	$4.618/gal	$2,886/yr	+$80
Minnesota	$4.344/gal	$2,715/yr	$-91
Massachusetts	$4.448/gal	$2,780/yr	$-26