Six Flags Great America ride reliability

1. 1Big Easy Balloons12d 23h lost · 3 breakdowns · down on 34 of 34 days 5.5%
2. 2AQUAMAN™ Splashdown9d 11h lost · 50 breakdowns · down on 34 of 34 days 30.6%
3. 3Roaring Rapids7d 4h lost · 37 breakdowns · down on 34 of 34 days 45.9%
4. 4Scenic Railway County Fair Station7d 8h lost · 44 breakdowns · down on 34 of 34 days 46.8%
5. 5American Eagle Red Side6d 1h lost · 52 breakdowns · down on 34 of 34 days 54.6%
6. 6American Eagle5d 20h lost · 45 breakdowns · down on 34 of 34 days 55.6%
7. 7River Rocker6d 9h lost · 31 breakdowns · down on 34 of 34 days 55.8%
8. 8Maxx Force5d 20h lost · 44 breakdowns · down on 34 of 34 days 58%
9. 9Krazy Kars4d 18h lost · 28 breakdowns · down on 34 of 34 days 65.8%
10. 10Demon4d 15h lost · 64 breakdowns · down on 34 of 34 days 66.2%
11. 11Sky Trek Tower4d 1h lost · 29 breakdowns · down on 34 of 34 days 70.3%
12. 12THE FLASH™: Vertical Velocity4d 6h lost · 36 breakdowns · down on 34 of 34 days 71.4%
13. 13Little Dipper3d 22h lost · 34 breakdowns · down on 34 of 34 days 71.9%
14. 14Whizzer3d 20h lost · 69 breakdowns · down on 34 of 34 days 73.4%
15. 15Sprocket Rockets3d 13h lost · 42 breakdowns · down on 34 of 34 days 74.3%
16. 16Sky Striker3d 10h lost · 105 breakdowns · down on 34 of 34 days 75.2%
17. 17SUPERMAN™: Ultimate Flight3d 10h lost · 42 breakdowns · down on 34 of 34 days 77.4%
18. 18Viper3d 0h lost · 27 breakdowns · down on 34 of 34 days 78%
19. 19Goliath3d 0h lost · 48 breakdowns · down on 34 of 34 days 79.2%
20. 20Condor2d 10h lost · 15 breakdowns · down on 34 of 34 days 81.7%
21. 21Wrath of Rakshasa2d 13h lost · 54 breakdowns · down on 34 of 34 days 82%
22. 22Bouncer2d 11h lost · 27 breakdowns · down on 34 of 34 days 82.2%
23. 23THE JOKER™ Free-Fly Coaster2d 8h lost · 49 breakdowns · down on 34 of 34 days 83.4%
24. 24Chubasco1d 21h lost · 24 breakdowns · down on 34 of 34 days 84.6%
25. 25X Flight2d 0h lost · 58 breakdowns · down on 34 of 34 days 84.7%
26. 26Up, Up & Away2d 0h lost · 14 breakdowns · down on 34 of 34 days 84.9%
27. 27Lady Bugs2d 0h lost · 25 breakdowns · down on 34 of 34 days 85%
28. 28JUSTICE LEAGUE™: Battle for METROPOLIS2d 0h lost · 50 breakdowns · down on 34 of 34 days 85.6%
29. 29The Lobster1d 22h lost · 25 breakdowns · down on 34 of 34 days 85.6%
30. 30Krazy Kups1d 20h lost · 14 breakdowns · down on 34 of 34 days 86.1%
31. 31Red Baron1d 20h lost · 18 breakdowns · down on 34 of 34 days 86.2%
32. 32Tot's Livery1d 19h lost · 16 breakdowns · down on 34 of 34 days 86.2%
33. 33ZoomJets1d 18h lost · 11 breakdowns · down on 34 of 34 days 86.7%
34. 34Raging Bull1d 19h lost · 60 breakdowns · down on 34 of 34 days 86.8%
35. 35Giant Drop1d 17h lost · 25 breakdowns · down on 34 of 34 days 87.2%
36. 36BATMAN™: The Ride1d 14h lost · 33 breakdowns · down on 34 of 34 days 88.2%
37. 37Rue Le Dodge1d 11h lost · 13 breakdowns · down on 34 of 34 days 88.5%
38. 38Hometown Fun Machine1d 16h lost · 21 breakdowns · down on 34 of 34 days 88.9%
39. 39Fiddler’s Fling1d 8h lost · 23 breakdowns · down on 34 of 34 days 89.2%
40. 40THE DARK KNIGHT™ Coaster1d 12h lost · 14 breakdowns · down on 34 of 34 days 89.6%
41. 41Ricochet1d 8h lost · 30 breakdowns · down on 34 of 34 days 89.7%
42. 42Triple Play1d 10h lost · 23 breakdowns · down on 34 of 34 days 90.2%
43. 43DC Super-Villains Swing™1d 0h lost · 14 breakdowns · down on 34 of 34 days 92.4%
44. 44Columbia Carousel17h 21m lost · 14 breakdowns · down on 34 of 34 days 94.7%

Breakdowns cluster at 5pm, with 200 of the 1,489 closures that started before the park's final hour beginning then - so the ride you most want is safest earlier in the day, not saved for last. A further 581 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. The other 11 closures start in the 11pm hour, when the park is shutting - those are rides finishing their day, not failing, so they are left out here.

The worst day in this window was 11 Aug, when 75.2% of the park's ride hours were lost and 45 of 45 rides went down at some point.