2015 smart fortwo cabriolet: MPG and fuel economy
The 2015 smart fortwo cabriolet is rated by the U.S. Environmental Protection Agency at 36 combined MPG, with 34 MPG in the city and 38 MPG on the highway. That puts it well above the average for cars in the Two Seaters class in the same model year.
This page collects every fuel-economy figure the EPA publishes for the 2015 smart fortwo cabriolet. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.
Key takeaways
- Returns 55% better combined MPG than the average car in the Two Seaters class for the 2015 model year (23.3 MPG class average).
- The most efficient car in the Two Seaters class for the 2015 model year is the smart fortwo electric drive convertible at 107 MPG.
- Requires premium gasoline, which typically adds about 40 to 60 cents per gallon to the EPA's annual fuel cost estimate.
Fuel economy at a glance
These are the EPA's official ratings for the 2015 smart fortwo cabriolet. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 36 MPG |
| City MPG | 34 MPG |
| Highway MPG | 38 MPG |
| Annual fuel cost | $1,900 |
| Tailpipe CO₂ | 244 g/mi |
| Fuel type | Premium |
How the 2015 smart fortwo cabriolet compares
The 2015 smart fortwo cabriolet returns 36 combined MPG. Cars in the Two Seaters class for the same model year average 23.3 MPG, which puts this car ahead of the class average by about 55%.
The most efficient car in the Two Seaters class for the 2015 model year is the smart fortwo electric drive convertible at 107 MPG. The bar chart below puts the smart fortwo cabriolet alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 2015 model year (across all classes) returns 24.6 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2015 model year is on its own page.
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for premium gasoline, which is $4.61/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 416.7 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $950 |
| Average driver, 15,000 miles per year | $1,900 |
| Heavy driver, 25,000 miles per year | $3,167 |
Year-over-year MPG for the smart fortwo cabriolet
The EPA has rated the smart fortwo cabriolet across 7 model years, from 2010 smart fortwo cabriolet through 2017 smart fortwo cabriolet. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.
Combined MPG has stayed in roughly the same range across the run, hovering close to 35 MPG.
| Year | Combined MPG | Open year page |
|---|---|---|
| 2017 | 35 MPG | 2017 smart fortwo cabriolet |
| 2015 | 36 MPG | this page |
| 2014 | 36 MPG | 2014 smart fortwo cabriolet |
| 2013 | 36 MPG | 2013 smart fortwo cabriolet |
| 2012 | 36 MPG | 2012 smart fortwo cabriolet |
| 2011 | 36 MPG | 2011 smart fortwo cabriolet |
| 2010 | 36 MPG | 2010 smart fortwo cabriolet |
Compare against other Two Seaters for 2015
If you are cross-shopping the 2015 smart fortwo cabriolet, the most useful comparison is against the other cars in the Two Seaters class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
The smart fortwo electric drive convertible leads this group at 107 MPG, 71 MPG ahead of the 2015 smart fortwo cabriolet.
Specifications
The 2015 smart fortwo cabriolet runs a 1-liter 3-cylinder engine paired with a automatic (am5), sending power through rear-wheel drive.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Two Seaters
- Engine
- 1L 3-cylinder
- Transmission
- Automatic (AM5)
- Drivetrain
- Rear-Wheel Drive
- Fuel type
- Premium
- Annual petroleum use
- 8.3 barrels per year
Common questions about the 2015 smart fortwo cabriolet
Quick answers to the questions people most often search for when looking up the 2015 smart fortwo cabriolet.
-
Is the 2015 smart fortwo cabriolet fuel efficient?
Yes. The 2015 smart fortwo cabriolet returns 36 combined MPG, which beats the average car in the Two Seaters class for the same model year by about 55%. -
What MPG does the 2015 smart fortwo cabriolet get?
The EPA rates the 2015 smart fortwo cabriolet at 36 combined MPG, 34 MPG in city driving, and 38 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 2015 smart fortwo cabriolet per year?
The EPA estimates an annual fuel cost of $1,900 for the 2015 smart fortwo cabriolet. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
Does the 2015 smart fortwo cabriolet require premium gas?
Yes. The EPA lists the 2015 smart fortwo cabriolet as requiring premium gasoline. Running it on regular can reduce performance and may affect engine warranties, so it is not a recommended way to save at the pump. -
Has the smart fortwo cabriolet become more fuel efficient over time?
Combined MPG has stayed close to flat across the run. Both the earliest (2010 smart fortwo cabriolet, 36 MPG) and most recent (2017 smart fortwo cabriolet, 35 MPG) versions sit in the same range. -
How much CO₂ does the 2015 smart fortwo cabriolet emit?
Tailpipe CO₂ emissions are 244 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 3,660 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 2015 smart fortwo cabriolet?
City driving returns 34 MPG and highway driving returns 38 MPG, a gap of 4 MPG. The two figures are close enough that the car will hold its rated efficiency well across most driving patterns. -
What engine is in the 2015 smart fortwo cabriolet?
The 2015 smart fortwo cabriolet has a 1-liter 3-cylinder engine. -
What transmission and drivetrain does the 2015 smart fortwo cabriolet have?
The 2015 smart fortwo cabriolet comes with a automatic (am5) transmission and rear-wheel drive. -
How does the 2015 smart fortwo cabriolet compare to the best car in its class?
The most efficient car in the Two Seaters class for the 2015 model year is the smart fortwo electric drive convertible at 107 combined MPG. The smart fortwo cabriolet returns 36 MPG, a gap of 71 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.