The current Mercedes-Benz M-Class covers up to 1,207 km on a full tank, based on combined-cycle consumption. Figures below are the best-range variant in each generation.
| Years | Powertrain | Range |
|---|---|---|
| 1998–2001 | Combustion | 745 |
| 2001–2005 | Combustion | 883 |
| 2005–2008 | Combustion | 1,011 |
| 2008–2011 | Combustion | 1,131 |
| 2011–2015 | Combustion | 1,207 |
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.