smart fortwo cabriolet
34.5 MPG The 2017 smart fortwo cabriolet is EPA-rated at 34.5 MPG combined (32 city / 38 highway). Over 15,000 miles a year that is about 435 gallons, $1391 a year in fuel, or $0.093 per mile at $3.20/gal.
Across its full 2010–2017 run it averages 35.8 MPG, falling by 1.5 MPG over 7 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.072 | $725 | $1087 | $1449 |
| $3.00/gal | $0.087 | $870 | $1304 | $1739 |
| $3.20/gal | $0.093 | $928 | $1391 | $1855 |
| $3.50/gal | $0.101 | $1014 | $1522 | $2029 |
| $4.00/gal | $0.116 | $1159 | $1739 | $2319 |
| $4.50/gal | $0.130 | $1304 | $1957 | $2609 |
| $5.00/gal | $0.145 | $1449 | $2174 | $2899 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2017 | 34.5 MPG | 32 | 38 | $2225 | 255 | 2 |
| 2015 | 36 MPG | 34 | 38 | $2150 | 244 | 1 |
| 2014 | 36 MPG | 34 | 38 | $2150 | 243 | 1 |
| 2013 | 36 MPG | 34 | 38 | $2150 | 244 | 1 |
| 2012 | 36 MPG | 34 | 38 | $2150 | 247 | 1 |
| 2011 | 36 MPG | 33 | 39 | $2150 | 247 | 1 |
| 2010 | 36 MPG | 33 | 41 | $2150 | 247 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 105 two seaters models tracked here, the smart fortwo cabriolet ranks 5 on current figures, against a class average of 21.2 MPG.
Closest more-efficient alternatives in the same class: Honda Civic CRX HF (41), Honda Insight (52), smart fortwo electric drive convertible (102), smart fortwo electric drive coupe (108).
Tailpipe CO₂ is rated at 255 grams per mile, which works out to roughly 3.8 tonnes a year at 15,000 miles.
Questions
What MPG does the smart fortwo cabriolet get?
The 2017 smart fortwo cabriolet is rated at 34.5 MPG combined by the EPA — 32 city and 38 highway. Across all 7 model years in the database it averages 35.8 MPG, ranging from 34 to 36 depending on year and trim.
How much does a smart fortwo cabriolet cost in fuel per year?
At 34.5 MPG and 15,000 miles a year, it burns about 435 gallons — roughly $1391 a year with fuel at $3.20 a gallon, or $0.093 per mile. The EPA's own published annual figure for the 2017 model is $2225.
Has the smart fortwo cabriolet become more efficient over time?
No — it has actually gone backwards, from 36 MPG in 2010 to 34.5 in 2017. That usually reflects the model growing heavier, more powerful, or moving upmarket rather than the engineering getting worse.
Is the smart fortwo cabriolet efficient for its class?
It ranks 5 of 105 in the Two Seaters class on current figures, against a class average of 21.2 MPG. That is 13.3 better than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.