2005 · Two-Seater · Gas
2005 Porsche Boxster MPG & fuel economy
The 2005 Porsche Boxster is a two-seater offered in 5 EPA-rated configurations. The most efficient version returns 21 MPG combined (18 city / 27 highway) on premium gasoline. Across the lineup, combined ratings range from 19 to 21 MPG. Efficiency is unchanged from the 2004 model. Among 28 two-seaters rated for 2005, it ranks 5th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,821 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2005 Porsche Boxster's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.5 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 18 | 7.7 | 13.1 |
| Highway | 27 | 11.5 | 8.7 |
| Combined | 21 | 8.9 | 11.2 |
How it ranks among 2005 Two-Seaters
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Boxster MPG across model years
Full history →5 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 2.7L 6-cyl · 5-speed manual Boxster |
Gas | 18 MPG | 27 MPG | 21 MPG | — | $2,821 |
| RWD · 2.7L 6-cyl · 6-speed manual Boxster |
Gas | 18 MPG | 26 MPG | 21 MPG | — | $2,821 |
| RWD · 3.2L 6-cyl · 6-speed manual Boxster S |
Gas | 17 MPG | 25 MPG | 20 MPG | — | $2,962 |
| RWD · 2.7L 6-cyl · 5-speed automatic Boxster |
Gas | 16 MPG | 24 MPG | 19 MPG | — | $3,118 |
| RWD · 3.2L 6-cyl · 5-speed automatic Boxster S |
Gas | 16 MPG | 24 MPG | 19 MPG | — | $3,118 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 2.7L 6-cyl
- Transmission
- 5-speed manual
- Drivetrain
- RWD
- Tailpipe CO₂
- 423 g/mi
2005 Porsche Boxster vs. rivals
Compare the 2005 Boxster
With any other car from any year, including other Boxster model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2005 Porsche Boxster?
Up to 21 MPG combined (18 city / 27 highway); ratings range from 19 to 21 MPG depending on configuration.
What fuel does the 2005 Porsche Boxster use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2005 Porsche Boxster?
The 2005 Porsche Boxster's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.5 km/L on the highway.
How much does it cost to fuel the 2005 Porsche Boxster per year?
About $2,821 at 15,000 miles a year with $3.95/gal premium gas, or $18.81 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.