Fuel economy & running costsGasoline
21MPGcombined
18city
27highway
A year of fuel$3,900
CO₂ from the tailpipe423.2 g/mi
Figures from the EPA label (fueleconomy.gov), the same as on the car's window sticker.
Against the 1,602 porsche cars
Bars are scaled to the best in the list; the mark shows the list average. Lower is better for fuel cost; higher is better for the rest. All figures are the EPA's.
Summary
2003 Porsche Boxster by Porsche. The figures below are from US EPA fueleconomy.gov, with the page each one came from.
Details
- Model year
- 2003fueleconomy.gov · 3 Oct 2026
Efficiency
- Combined MPG
- 21fueleconomy.gov · 3 Oct 2026
- City MPG
- 18fueleconomy.gov · 3 Oct 2026
- Highway MPG
- 27fueleconomy.gov · 3 Oct 2026
Running cost
- Annual fuel cost
- $3,900fueleconomy.gov · 3 Oct 2026
- CO₂ (tailpipe)
- 423.2 g/mifueleconomy.gov · 3 Oct 2026
Car
- Body
- Carfueleconomy.gov · 3 Oct 2026
- EPA class
- Two Seatersfueleconomy.gov · 3 Oct 2026
- Drive
- Rear-Wheel Drivefueleconomy.gov · 3 Oct 2026
Powertrain
- Engine
- 2.7 L 6-cylfueleconomy.gov · 3 Oct 2026
- Transmission
- Manual 5-spdfueleconomy.gov · 3 Oct 2026
- Fuel
- Gasolinefueleconomy.gov · 3 Oct 2026
More porsche cars
See the list
#1 2026 · Porsche 911 Carrera 21Combined MPG $3,900Fuel / year #2 2026 · Porsche 911 Carrera 4 GTS 19Combined MPG $4,350Fuel / year #3 2026 · Porsche 911 Carrera 4 GTS Cabriolet 19Combined MPG $4,350Fuel / year #4 2026 · Porsche 911 Carrera 4S 20Combined MPG $4,100Fuel / year #5 2026 · Porsche 911 Carrera 4S Cabriolet 20Combined MPG $4,100Fuel / year #6 2026 · Porsche 911 Carrera Cabriolet 21Combined MPG $3,900Fuel / year Listed on CarCody
- Porsche Cars: Every Model and Year With MPG1602 listed
Sources
- fueleconomy.gov/feg/noframes/18333.shtml· checked 3 Oct 2026