The current Subaru Justy covers up to 800 km on a full tank, based on combined-cycle consumption. Figures below are the best-range variant in each generation.
| Years | Powertrain | Range |
|---|---|---|
| 1984–1989 | Combustion | 583 |
| 1989–1996 | Combustion | 547 |
| 1996–2003 | Combustion | 536 |
| 2007–2011 | Combustion | 800 |
Range is calculated from each variant’s fuel tank capacity and combined-cycle consumption (tank ÷ consumption × 100), for the best-range variant in each generation — real-world range varies with driving style and conditions. Figures outside a plausible range for the tank size are excluded.