Real MPG: Hyundai i30 Fastback (2018 on)
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| 1.0 T-GDi 120 | 51.4 mpg | - | 42.3 mpg | 82% | |
| 1.4 T-GDI 140 | 48.7 mpg | 42.2–44.1 mpg | 45.2 mpg | 105%* | |
| 1.4 T-GDI 140 DCT | 51.4 mpg | 44.1–45.6 mpg | 35.1 mpg | 78%* | |
| 1.5 T-GDI | - | 45.6 mpg | - | -* | |
| 1.5 T-GDI DCT | - | 47.1 mpg | - | -* |
Rivals
| Hyundai i30 Fastback (2018 on) | 40.0 | avg mpg |
| Dacia Logan MCV Stepway (2017 - 2019) | 48.6 | avg mpg |
| MINI Countryman (2017 on) | 50.4 | avg mpg |
| Ford Focus (2018 on) | 45.5 | avg mpg |
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