- Newest year: 2006
- Gas
- Two-seaters
- Same as 2005
2005-2006 Porsche Boxster MPG & Fuel Cost
2 model years · 19–21 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 7 of 10 two-seater configurations, MY2006. Ranked against all rated configurations, not sales-weighted.
2005-2006 Porsche Boxster at a glance
The 2005-2006 Porsche Boxster covers 2 model years in the EPA database (10 configurations in all), rated 19–21 MPG combined. The newest model year, 2006, costs about $3,830 a year to fuel for its most efficient version, the Boxster 2.7L 6-cyl RWD (21 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.
2005-2006 Porsche Boxster by model year
What the 2006 Boxster 2.7L 6-cyl RWD costs to drive
Per month
$319
$3,830 a year ÷ 12
Per 25 miles
$6.38
Per 100 miles
$25.53
Five years
$19,150
5 × the yearly cost, prices held at today's level
vs the two-seater median
$400less a year
Class median $4,230 a year, MY2006
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2006 Porsche Boxster MPG
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
EPA lists the same ratings for the 2006 Porsche Boxster as for the 2005 model, so the configurations and costs are the ones in the 2005 section above.See 2005
Gas configurations (5)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Boxster 2.7L 6-cyl RWD Manual 5-spd (Most efficient) | 2.7L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Boxster 2.7L 6-cyl RWD Manual 6-spd | 2.7L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| S 3.2L 6-cyl RWD Manual 6-spd | 3.2L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| Boxster 2.7L 6-cyl RWD Automatic 5-spd | 2.7L 6-cyl | RWD | 16 | 24 | 19 | $4,230 |
| S 3.2L 6-cyl RWD Automatic 5-spd | 3.2L 6-cyl | RWD | 16 | 24 | 19 | $4,230 |
5 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2005 Porsche Boxster MPG
19–21 MPG · $3,830–$4,230/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Gas configurations (5)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Boxster 2.7L 6-cyl RWD Manual 5-spd (Most efficient) | 2.7L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Boxster 2.7L 6-cyl RWD Manual 6-spd | 2.7L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| S 3.2L 6-cyl RWD Manual 6-spd | 3.2L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| Boxster 2.7L 6-cyl RWD Automatic 5-spd | 2.7L 6-cyl | RWD | 16 | 24 | 19 | $4,230 |
| S 3.2L 6-cyl RWD Automatic 5-spd | 3.2L 6-cyl | RWD | 16 | 24 | 19 | $4,230 |
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: $4,560 in California and $3,320 in Texas, a $1,240 difference.
- California $4,560
- Washington $4,290
- New York $3,780
- Florida $3,490
- Texas $3,320
Similar cars
Closest combined MPG among MY2006 two-seater models.
Generations
Frequently asked questions
What gas mileage does the 2005-2006 Porsche Boxster get?
EPA rates the 2005-2006 Porsche Boxster at 19–21 MPG combined across 10 configurations and 2 model years. The most efficient version, the 2006 Boxster 2.7L 6-cyl RWD, is rated 21 MPG (18 city, 27 highway).
Which years had the best MPG in the 2005-2006 Porsche Boxster?
Every model year of the 2005-2006 Porsche Boxster tops out at 21 MPG combined, so no year is better than another.
Did EPA ratings change during the 2005-2006 Porsche Boxster?
No. EPA lists the same ratings for every model year from 2005 to 2006.
How does the 2005-2006 Porsche Boxster compare with the previous generation?
The previous generation (2000-2004 Porsche Boxster) is rated 17–21 MPG combined and costs $3,830–$4,730 a year to fuel; the 2005-2006 model is rated 19–21 MPG and costs $3,830–$4,230 a year.
How much does it cost to fuel a 2006 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 $3,830 a year. Across all 5 configurations the cost runs $3,830–$4,230 a year. That is a $400 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2006 Porsche Boxster 100 miles?
About $25.53 per 100 miles for the Boxster 2.7L 6-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $25.53 and $28.20 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2006 Porsche Boxster more efficient in the city or on the highway?
The Boxster 2.7L 6-cyl RWD is rated 18 city and 27 highway MPG, so it is more efficient on the highway, by 9 MPG.
How does the 2006 Porsche Boxster compare with other two-seater configurations?
The Boxster 2.7L 6-cyl RWD costs about $3,830 a year to fuel, $400 less than the class median of $4,230, and less than 7 of 10 two-seater configurations. The comparison covers all 69 rated two-seater configurations for MY2006, not weighted by sales.
Is the 2006 Porsche Boxster different from the 2005 model?
No. EPA lists the same ratings for 2005 and 2006: 5 configurations rated 19–21 MPG combined. See the 2005 Porsche Boxster for that year.