Smart Car Fuel Economy by Model Year: The Complete Breakdown
Whether you’re looking at a zippy gas-powered Fortwo or the all-electric Smart EQ, fuel economy has evolved dramatically over the years — and the differences might surprise you.
You’re considering a Smart Car, and naturally, fuel economy is at the top of your mind. After all, that’s the whole point of these tiny urban runabouts, right? But here’s the thing — not all Smart Cars sip fuel the same way. The model year you choose, the transmission you get, and whether you go gas or electric all make a huge difference in what you’ll actually spend at the pump or on your electricity bill.
TL;DR
Smart Car fuel economy varies dramatically by model year and powertrain. Gas-powered models from 2014–2015 get about 36 MPG combined (34 city / 38 highway) , while 2017 models with the 0.9L engine achieve 35 MPG combined (33 city / 39 highway) for automatics . Early electric models (2014–2015) deliver an impressive 107 MPGe combined (122 city / 93 highway) , and newer Smart EQ models offer ranges of 80–91 miles depending on the version . Real-world owner MPG for the 2009 Fortwo averages 39.3 MPG — but individual results range from 33 to 54 MPG based on driving habits .
Key Takeaways
- 2014–2015 gas Smart Fortwo models get 36 MPG combined (34 city / 38 highway) with the 1.0L 3-cylinder engine and automated manual transmission .
- 2017 gas Smart Fortwo models with the 0.9L turbo engine achieve 35 MPG combined (33 city / 39 highway) for automatics and 34 MPG combined (31 city / 39 highway) for manuals .
- Electric Smart models (2014–2017) deliver 107–108 MPGe combined, with city ratings as high as 124 MPGe for the 2017 electric coupe .
- Smart EQ models (2018–2020) offer electric ranges of 80–91 miles with energy consumption around 3.8–3.9 miles/kWh .
- European MPG ratings are much higher than U.S. figures — some 2018 models show 68.9 MPG due to different testing standards .
Gas-Powered Smart Cars: The Numbers by Year
Let’s start with the gas models, since they’ve been around the longest and make up the bulk of used Smart Cars on the market.
2014–2015 Smart Fortwo (1.0L 3-Cylinder)
According to the official EPA data from fueleconomy.gov, the 2014 and 2015 Smart Fortwo with the 1.0-liter 3-cylinder engine and automated manual transmission gets :
| Model | Combined MPG | City MPG | Highway MPG | Fuel Type |
|---|---|---|---|---|
| Fortwo Coupe (2014–2015) | 36 | 34 | 38 | Premium Gasoline |
| Fortwo Cabriolet (2014–2015) | 36 | 34 | 38 | Premium Gasoline |
Here’s the thing — these numbers are solid for a city car, but they’re not class-leading. The automated manual transmission is a bit quirky, and it shows in the fuel economy numbers.
2017 Smart Fortwo (0.9L Turbo)
The 2017 model year brought some changes, including a new 0.9-liter turbocharged 3-cylinder engine. The EPA data shows a slight improvement :
| Model | Transmission | Combined MPG | City MPG | Highway MPG |
|---|---|---|---|---|
| Fortwo Coupe | Automatic (AM6) | 35 | 33 | 39 |
| Fortwo Coupe | Manual 5-spd | 34 | 31 | 39 |
| Fortwo Cabriolet | Automatic (AM6) | 35 | 33 | 38 |
| Fortwo Cabriolet | Manual 5-spd | 34 | 31 | 38 |
The automatic gets better city MPG than the manual — that’s unusual, but it reflects how the automated manual is optimized for urban driving. Premium gasoline is required for both engine options.
European MPG Figures (Much Higher!)
Here’s where things get confusing. If you look at European fuel economy ratings, the numbers look dramatically better. For example, the 2018 Smart Fortwo shows 68.9 MPG on European test cycles . That’s not a mistake — it’s just a different testing standard. The European WLTP (Worldwide Harmonized Light Vehicle Test Procedure) tends to produce more optimistic numbers than the U.S. EPA tests.
Smart average fuel consumption across all models is about 55.9 MPG in European testing, which translates to roughly 36–40 MPG in U.S. EPA numbers . Always check which testing standard you’re looking at when comparing fuel economy claims.
Electric Smart Cars: The EV Revolution
The electric Smart models are where things get really interesting. They’re not just efficient — they’re in a completely different league.
2014–2015 Smart Electric Drive
The early electric Smarts from 2014–2015 delivered impressive efficiency :
| Model | Combined MPGe | City MPGe | Highway MPGe | Range |
|---|---|---|---|---|
| Fortwo Electric Drive Coupe | 107 | 122 | 93 | ~68 miles |
| Fortwo Electric Drive Cabriolet | 107 | 122 | 93 | ~68 miles |
That’s 122 MPGe in the city — nearly three times the efficiency of the gas model. The regenerative braking system really shines in stop-and-go traffic, capturing energy every time you slow down.
2017 Smart Electric Drive
The 2017 model year improved on the electric formula :
| Model | Combined MPGe | City MPGe | Highway MPGe | Energy Consumption |
|---|---|---|---|---|
| Electric Drive Coupe | 108 | 124 | 94 | 31 kWh/100 miles |
| Electric Drive Cabriolet | 102 | 112 | 91 | 33 kWh/100 miles |
The coupe version is slightly more efficient than the cabriolet — probably due to the extra weight and different aerodynamics of the convertible top.
Smart EQ (2018–2020)
The Smart EQ models represent the final evolution of the electric Smart before the brand transitioned to all-electric models . Key specs include:
- Battery capacity: 17.6 kWh lithium-ion
- Motor output: 80 bhp with 160 Nm of torque
- 0-62 mph: ~12 seconds
- Top speed: Electronically limited to 81 mph
- Fast charging: 10–80% in under 40 minutes with 22kW charging
Range varies by model :
| Model | Claimed Range |
|---|---|
| EQ Fortwo Coupe | 91 miles |
| EQ Fortwo Cabriolet | 90 miles |
| EQ ForFour | 87 miles |
| EQ Fortwo (various trims) | 80–84 miles |
Energy consumption for these models is around 3.8–3.9 miles/kWh, with some variants achieving up to 4.8 miles/kWh .
Smart was actually the first mainstream manufacturer to go fully electric — dropping petrol power entirely from its range with the EQ models .
Real-World vs. EPA: What Owners Actually Report
Official numbers are great, but real-world driving is where the rubber meets the road. Here’s what actual owners are reporting.
2009 Smart Fortwo Real-World MPG
According to user-submitted data on fueleconomy.gov, the 2009 Smart Fortwo Coupe with the 1.0L engine and automated manual transmission has an average real-world MPG of 39.3 across 14 vehicles .
The range is eye-opening:
- Best reported: 53.6 MPG (100% city driving!)
- Worst reported: 32.9 MPG (91% city driving)
- Most common range: 35–46 MPG
One owner reported an incredible 53.6 MPG — but that was with 100% city driving. Another driver with mostly highway miles got 35.3 MPG. It really shows how much driving style and conditions matter .
Comparison Table: Smart Car Fuel Economy by Model Year
| Model Year | Powertrain | Combined MPG/MPGe | City | Highway | Notes |
|---|---|---|---|---|---|
| 2009 | 1.0L Gas, AM5 | ~39.3 (owner avg) | 33 | 41 | Range: 33–54 MPG |
| 2014–2015 | 1.0L Gas, AM5 | 36 MPG | 34 | 38 | Premium fuel required |
| 2014–2015 | Electric Drive | 107 MPGe | 122 | 93 | ~68 mile range |
| 2017 | 0.9L Turbo Gas, AM6 | 35 MPG | 33 | 39 | Premium fuel required |
| 2017 | 0.9L Turbo Gas, Manual | 34 MPG | 31 | 39 | Premium fuel required |
| 2017 | Electric Drive Coupe | 108 MPGe | 124 | 94 | 31 kWh/100 miles |
| 2017 | Electric Drive Cabrio | 102 MPGe | 112 | 91 | 33 kWh/100 miles |
| 2018 | Gas (European rating) | 68.9 MPG (EU) | — | — | Different testing standard |
| 2018–2020 | EQ Electric | ~80–91 mile range | — | — | 3.8–3.9 miles/kWh |
Why Gas Smarts Get Better Highway MPG
You might notice that gas Smart Cars consistently get better highway fuel economy than city. This is typical for gasoline engines — they run most efficiently at steady speeds. The automated manual transmission locks into gear on the highway and just cruises, while in the city it’s constantly shifting, which uses more fuel.
The 2017 gas Smart with automatic gets 33 MPG city and 39 MPG highway — an 18% improvement on the highway . That’s a significant difference.
Why Electric Smarts Get Better City MPGe
Electric cars do the opposite. They get better efficiency in the city because of regenerative braking. Every time you stop, the electric motor acts as a generator, putting energy back into the battery. On the highway, there’s no braking, so you’re just draining the battery without any recharge opportunity .
The 2017 electric Smart gets 124 MPGe city but only 94 MPGe highway — that’s a 32% drop . So if you’re mostly highway driving, the gas model might actually be the more practical choice.
FAQ: Smart Car Fuel Economy
What is the best gas mileage Smart Car ever made?
The gas Smart Fortwo models from 2017 with the 0.9L turbo engine and automatic transmission achieve up to 39 MPG highway . Electric models are far more efficient, with the 2017 electric coupe achieving 108 MPGe combined .
How many miles per gallon does a Smart Fortwo get?
2014–2015 gas models get 36 MPG combined (34 city / 38 highway) . 2017 gas models get 35 MPG combined (33 city / 39 highway) for automatics .
Does the Smart Car require premium gas?
Yes — both the 1.0L and 0.9L turbo gas engines in U.S. models require premium gasoline for optimal performance and fuel economy .
What is the range of a Smart Electric Drive?
The 2014–2015 electric models have a range of about 68 miles . The newer Smart EQ models (2018–2020) offer 80–91 miles depending on the variant .
Is the Smart EQ cheaper to run than the gas version?
Yes — electric Smarts have much lower running costs. No oil changes, no timing belts, and electricity costs significantly less than gasoline per mile. The Smart EQ Fortwo is considered one of the cheapest cars to maintain overall.
Why do European Smart Cars show higher MPG than U.S. models?
European testing standards (WLTP) produce more optimistic fuel economy numbers than U.S. EPA testing. A Smart showing 68.9 MPG in Europe would likely test around 36–40 MPG under U.S. standards .
What’s the real-world MPG for a 2009 Smart Fortwo?
Owner-reported average is 39.3 MPG, with individual results ranging from 33 to 54 MPG depending on driving conditions and habits .
References
Smart Car Fuel Economy Official Sources:
- 2017 Smart Fortwo EPA Fuel Economy – FuelEconomy.gov
- 2014–2015 Smart Fuel Economy – FuelEconomy.gov (Spanish)
- 2009 Smart Fortwo Owner MPG Estimates – FuelEconomy.gov
- 2020 Smart EQ Pricing and Specs – Carbuyer
- Smart EQ Fortwo Specs – Parkers
What Smart Car do you drive, and what kind of fuel economy are you actually getting? Drop your real-world MPG numbers in the comments below!
