1. Ensure that the car is in Park or Neutral.
2. Press and hold the "Sport" button on the center console.
3. Use the paddles on the steering wheel to shift up or down.
4. To return to automatic shifting, release the "Sport" button.
Here are some additional tips for manually shifting the Jaguar XK8:
- Shift up when the engine reaches about 3,000 RPMs.
- Shift down when the engine drops below 2,000 RPMs.
- Avoid shifting into a gear that is too high or too low for the current speed.
- Manually shifting can improve fuel economy and performance, but it can also be more difficult than automatic shifting.