The current Jaguar XK covers up to 634 km on a full tank, based on combined-cycle consumption. Figures below are the best-range variant in each generation.
| Years | Powertrain | Range |
|---|---|---|
| 1996–2002 | Combustion | 641 |
| 2002–2006 | Combustion | 664 |
| 2006–2009 | Combustion | 628 |
| 2009–2015 | Combustion | 634 |
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.