Porsche · Two-seaters · Gasoline
Porsche Boxster: MPG and annual fuel cost, 2020
The Porsche Boxster was last rated in the data for model year 2020, at 24 MPG combined, tied for 4th of 16 two-seaters, in the top quarter.
- 24MPG combinedtied 4th of 16 in class
- $3,400a year in fueltied 4th of 16 in class
- 375g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is tied for 4th of 14 gasoline two-seaters, in the upper half. The median of that narrower group is 18 MPG, the same as for all of them together.
Among all gasoline models of the year, regardless of size, it is tied for 12th of 39 gasoline models, in the upper half.
In its class, just ahead of it is the Mercedes-Benz SLC-Class at 27 MPG and just behind it is the McLaren Automotive 570S Coupe at 18 MPG.
Fuel cost and CO2
The file prices the fuel for its most efficient version at about $3,400 a year, assuming 15,000 miles a year with 55% of them in the city and premium gasoline at $5.48 per gallon. That is $1,150 less than the two-seaters median of $4,550.
It emits 375 g of CO2 per mile from the tailpipe; the two-seaters median is 503, a difference of 128 g/mile.
Rated versions
Its city rating is 21 and its highway rating 27: the highway figure is 6 higher. 6 versions are rated for 2020. The most efficient, Boxster: 2.0 L, 4 cyl, Automatic (AM-S7), RWD, gets 24 MPG; the least efficient listed, Boxster S: 2.5 L, 4 cyl, Manual 6-spd, RWD, gets 21 MPG, a gap of 3 MPG. With the file's assumptions that gap is worth about $500 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| Boxster: 2.0 L, 4 cyl, Automatic (AM-S7), RWD | 24 | 21 | 27 | $3,400 | 375 |
| Boxster T: 2.0 L, 4 cyl, Automatic (AM-S7), RWD | 23 | 21 | 27 | $3,550 | 380 |
| Boxster S: 2.5 L, 4 cyl, Automatic (AM-S7), RWD | 22 | 19 | 25 | $3,750 | 410 |
| Boxster T: 2.0 L, 4 cyl, Manual 6-spd, RWD | 22 | 20 | 26 | $3,750 | 394 |
| Boxster: 2.0 L, 4 cyl, Manual 6-spd, RWD | 22 | 20 | 26 | $3,750 | 394 |
| Boxster S: 2.5 L, 4 cyl, Manual 6-spd, RWD | 21 | 19 | 24 | $3,900 | 423 |
Year by year
The Porsche Boxster is in the data for 2 of the 8 model years from 2019 to 2026. Between 2019 and 2020 the best combined rating fell by 1 MPG, from 25 to 24. Fuel cost for the best version is $3,400 in the latest data against $3,300 in 2019, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2020 | 6 | 24 | 21 | $3,400 | 375 | 18 |
| 2019 | 6 | 25 | 21 | $3,300 | 353 | 18 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Alfa Romeo 4C | Gasoline | 28 | $2,950 | 2020 |
| Fiat 124 Spider | Gasoline | 30 | $2,750 | 2020 |
| McLaren Automotive 600LT Spider | Gasoline | 18 | $4,550 | 2020 |
| Ferrari 488 Pista | Gasoline | 17 | $4,850 | 2020 |
| Koenigsegg Regera | Hybrid | 11 | $7,450 | 2020 |
Rated almost identically and covered by this page:
- Porsche Cayman 24 MPG, $3,400 a year, 6 versions, last rated 2020
Compare and rank
Rankings: Two-seaters.
Data: US EPA and DOE, as prepared in methods and data.