Real MPG: Smart Fortwo (2014 - 2019) 0.9T 109 Automatic
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                                62.8–68.9
                            
                            Official MPG(NEDC)
42.8–66.0                            
                            Real MPG
                        
                                53.5
                            
                            Real MPGAverage
                                    81%
                                
                                of Official MPG(NEDC)
More engines available for this model:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| 0.9 | 54.3–67.3 mpg | - | 50.8 mpg | 84% | |
| 0.9 Automatic | 56.5–68.9 mpg | - | 47.3 mpg | 75% | |
| 1.0 | 56.5–68.9 mpg | - | 53.0 mpg | 84% | |
| 1.0 71 | 68.9 mpg | - | 50.2 mpg | 73% | |
| 1.0 71 Automatic | 68.9 mpg | - | 44.3 mpg | 64% | |
| 1.0 90 | 67.3 mpg | - | 48.0 mpg | 71% | |
| 1.0 90 Automatic | 68.9 mpg | - | - | - | |
| 1.0 Automatic | 58.9–68.9 mpg | - | 50.8 mpg | 79% | 
Read the Honest John review...
Smart Fortwo (2014 - 2019)
                Available with a manual gearbox or a twin-clutch automatic. Cheap to run. Tiny turning circle.
            
        Rivals
| Smart Fortwo (2014 - 2019) | 49.8 | avg mpg | 
| Dacia Sandero Stepway (2013 - 2020) | 51.5 | avg mpg | 
| Hyundai i10 (2014 - 2019) | 47.0 | avg mpg | 
| Toyota Aygo (2014 - 2022) | 55.7 | avg mpg | 

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