Gallonly
2005-2008 Porsche Boxster
Shown: 2005-2008 Porsche Boxster. Photo: EurovisionNim, CC BY-SA 4.0, via Wikimedia Commons
  • Newest year: 2008
  • Gas
  • Two-seaters
  • Same as 2007

2007-2008 Porsche Boxster MPG & Fuel Cost

2 model years · 21–23 MPG combined

23 MPG
Combined
20 MPG
City
29 MPG
Highway
Annual fuel cost · Boxster 2.7L 6-cyl RWD
$3,490

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

Cheaper to fuel than 9 of 10 two-seater configurations, MY2008. Ranked against all rated configurations, not sales-weighted.

2007-2008 Porsche Boxster at a glance

The 2007-2008 Porsche Boxster covers 2 model years in the EPA database (10 configurations in all), rated 21–23 MPG combined. The newest model year, 2008, costs about $3,490 a year to fuel for its most efficient version, the Boxster 2.7L 6-cyl RWD (23 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA lists identical ratings for every model year of this generation.

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

2007-2008 Porsche Boxster by model year

2007-2008 Porsche Boxster: EPA combined rating and yearly fuel cost for each model year
Model yearPowertrainsCombined$/yrEPA ratings
2008 Gas 21–23 MPG $3,490–$3,830 Same EPA ratings as 2007
2007 Gas 21–23 MPG $3,490–$3,830 First year

What the 2008 Boxster 2.7L 6-cyl RWD costs to drive

Per month

$291

$3,490 a year ÷ 12

Per 25 miles

$5.82

Per 100 miles

$23.27

Five years

$17,450

5 × the yearly cost, prices held at today's level

vs the two-seater median

$530less a year

Class median $4,020 a year, MY2008

Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).

2008 Porsche Boxster MPG

EPA lists the same ratings for the 2008 Porsche Boxster as for the 2007 model, so the configurations and costs are the ones in the 2007 section above.See 2007

Gas · 2.7L, 3.4L
Combined
21–23 MPG
Per year
$3,490–$3,830

Gas configurations (5)

2008 Porsche Boxster gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Boxster 2.7L 6-cyl RWD Manual 5-spd (Most efficient) 2.7L 6-cyl RWD 20 29 23 $3,490
Boxster 2.7L 6-cyl RWD Manual 6-spd 2.7L 6-cyl RWD 19 28 22 $3,650
Boxster 2.7L 6-cyl RWD Automatic 5-spd 2.7L 6-cyl RWD 19 26 21 $3,830
S 3.4L 6-cyl RWD Automatic 5-spd 3.4L 6-cyl RWD 18 25 21 $3,830
S 3.4L 6-cyl RWD Manual 6-spd 3.4L 6-cyl RWD 18 26 21 $3,830

5 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2007 Porsche Boxster MPG

21–23 MPG · $3,490–$3,830/yr

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

Gas · 2.7L, 3.4L
Combined
21–23 MPG
Per year
$3,490–$3,830

Gas configurations (5)

2007 Porsche Boxster gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Boxster 2.7L 6-cyl RWD Manual 5-spd (Most efficient) 2.7L 6-cyl RWD 20 29 23 $3,490
Boxster 2.7L 6-cyl RWD Manual 6-spd 2.7L 6-cyl RWD 19 28 22 $3,650
Boxster 2.7L 6-cyl RWD Automatic 5-spd 2.7L 6-cyl RWD 19 26 21 $3,830
S 3.4L 6-cyl RWD Automatic 5-spd 3.4L 6-cyl RWD 18 25 21 $3,830
S 3.4L 6-cyl RWD Manual 6-spd 3.4L 6-cyl RWD 18 26 21 $3,830

5 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Fuel cost by state

Yearly cost of the Boxster 2.7L 6-cyl RWD: $4,170 in California and $3,030 in Texas, a $1,140 difference.

Gasoline prices: California: California state average; Washington: Washington state average; New York: New York state average; Florida: Florida state average; Texas: Texas state average (Sep 2026).
Fuel cost in every state

Similar cars

Closest combined MPG among MY2008 two-seater models.

EPA ratings: fueleconomy.gov file of Sep 29, 2026 · Prices: EIA regular gasoline, U.S. average, Sep 2026 ($4.36/gal) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Generations

Frequently asked questions

What gas mileage does the 2007-2008 Porsche Boxster get?

EPA rates the 2007-2008 Porsche Boxster at 21–23 MPG combined across 10 configurations and 2 model years. The most efficient version, the 2008 Boxster 2.7L 6-cyl RWD, is rated 23 MPG (20 city, 29 highway).

Which years had the best MPG in the 2007-2008 Porsche Boxster?

Every model year of the 2007-2008 Porsche Boxster tops out at 23 MPG combined, so no year is better than another.

Did EPA ratings change during the 2007-2008 Porsche Boxster?

No. EPA lists the same ratings for every model year from 2007 to 2008.

How does the 2007-2008 Porsche Boxster compare with the previous generation?

The previous generation (2005-2006 Porsche Boxster) is rated 19–21 MPG combined and costs $3,830–$4,230 a year to fuel; the 2007-2008 model is rated 21–23 MPG and costs $3,490–$3,830 a year.

How much does it cost to fuel a 2008 Porsche Boxster per year?

Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the Boxster 2.7L 6-cyl RWD costs about $3,490 a year. Across all 5 configurations the cost runs $3,490–$3,830 a year. That is a $340 difference between the cheapest and the costliest configuration.

How much does it cost to drive a 2008 Porsche Boxster 100 miles?

About $23.27 per 100 miles for the Boxster 2.7L 6-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $23.27 and $25.53 across all configurations. That is the annual cost over 15,000 miles divided by 150.

Is the 2008 Porsche Boxster more efficient in the city or on the highway?

The Boxster 2.7L 6-cyl RWD is rated 20 city and 29 highway MPG, so it is more efficient on the highway, by 9 MPG.

How does the 2008 Porsche Boxster compare with other two-seater configurations?

The Boxster 2.7L 6-cyl RWD costs about $3,490 a year to fuel, $530 less than the class median of $4,020, and less than 9 of 10 two-seater configurations. The comparison covers all 81 rated two-seater configurations for MY2008, not weighted by sales.

Is the 2008 Porsche Boxster different from the 2007 model?

No. EPA lists the same ratings for 2007 and 2008: 5 configurations rated 21–23 MPG combined. See the 2007 Porsche Boxster for that year.