1. Launch the Street Car Race Ultimate app on your mobile device.

2. Begin by selecting a game mode or level from the main menu.

3. Use the on-screen virtual buttons to control your car: press the gas pedal to accelerate and the brake to slow down or reverse.

4. Tilt your device left or right or use on-screen arrows to steer your vehicle in the desired direction.

5. Follow the mission objectives displayed at the beginning of each level. These may include reaching a destination, avoiding traffic, or collecting coins.

6. Drive through the 3D city streets while avoiding obstacles and other vehicles. Crashing into other cars or barriers may reduce your score or end the mission.

7. Use the handbrake button during sharp turns or emergency stops for better control.

8. Collect coins scattered along the road to increase your in-game currency.

9. After completing a level, visit the garage to use collected coins to upgrade your car's acceleration or purchase new, faster vehicles.

10. Progress through increasingly difficult levels, completing missions and improving your car's performance.

11. Aim to master driving techniques and earn high scores to unlock all vehicles and become the ultimate street racer.