smart fortwo electric drive convertible
102 MPGe The 2018 smart fortwo electric drive convertible is EPA-rated at 102 MPGe combined (112 city / 91 highway). Over 15,000 miles a year that is about 147 gallons, $471 a year in fuel, or $0.031 per mile at $3.20/gal.
Across its full 2013–2018 run it averages 105.3 MPGe, falling by 5 MPGe over 6 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 | $0.025 | $245 | $368 | $490 |
| $3.00/gal | $0.029 | $294 | $441 | $588 |
| $3.20/gal | $0.031 | $314 | $471 | $627 |
| $3.50/gal | $0.034 | $343 | $515 | $686 |
| $4.00/gal | $0.039 | $392 | $588 | $784 |
| $4.50/gal | $0.044 | $441 | $662 | $882 |
| $5.00/gal | $0.049 | $490 | $735 | $980 |
This is an electric vehicle, so the EPA rates it in MPGe — the distance it travels on the energy equivalent of a gallon of petrol. The dollar figures above are a petrol-equivalent illustration only; charging at home is billed per kWh and is normally far cheaper. Treat the MPGe as an efficiency comparison, not a fuel bill.
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2018 | 102 MPGe | 112 | 91 | $750 | — | 1 |
| 2017 | 102 MPGe | 112 | 91 | $750 | — | 1 |
| 2016 | 107 MPGe | 122 | 93 | $700 | — | 1 |
| 2015 | 107 MPGe | 122 | 93 | $700 | — | 1 |
| 2014 | 107 MPGe | 122 | 93 | $700 | — | 1 |
| 2013 | 107 MPGe | 122 | 93 | $700 | — | 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 electric drive convertible ranks 2 on current figures, against a class average of 20.6 MPGe.
Closest more-efficient alternatives in the same class: smart fortwo electric drive coupe (108).
Questions
What MPG does the smart fortwo electric drive convertible get?
The 2018 smart fortwo electric drive convertible is rated at 102 MPGe combined by the EPA — 112 city and 91 highway. Across all 6 model years in the database it averages 105.3 MPGe, ranging from 102 to 107 depending on year and trim.
How much does a smart fortwo electric drive convertible cost in fuel per year?
At 102 MPGe and 15,000 miles a year, it burns about 147 gallons — roughly $471 a year with fuel at $3.20 a gallon, or $0.031 per mile. The EPA's own published annual figure for the 2018 model is $750.
Has the smart fortwo electric drive convertible become more efficient over time?
No — it has actually gone backwards, from 107 MPGe in 2013 to 102 in 2018. That usually reflects the model growing heavier, more powerful, or moving upmarket rather than the engineering getting worse.
Is the smart fortwo electric drive convertible efficient for its class?
It ranks 2 of 105 in the Two Seaters class on current figures, against a class average of 20.6 MPGe. That is 81.4 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.