Season 4

1. Fast Machines

2. Theme Park Machines

3. Tractor Machines

4. Electric Machines

5. Mobility Machines

6. Collection Machines

7. Racing Machines

8. Farming Machines

9. Balance Machines

10. Little Machines

11. Safety Machines

12. Water Safety Machines

13. Demolition Machines

14. Harbour Machines

15. Space Machines

16. Water Machines

17. Recycling Machines

18. City Machines

19. Emergency Machines

20. Grace's Favourite Machines