Disneyland Park ride reliability

1. 1Sailing Ship Columbia35d 21h lost · 13 breakdowns · down on 60 of 60 days 5.5%
2. 2Haunted Mansion34d 4h lost · 5 breakdowns · down on 60 of 60 days 9.6%
3. 3Davy Crockett's Explorer Canoes34d 3h lost · 14 breakdowns · down on 60 of 60 days 9.6%
4. 4Indiana Jones™ Adventure16d 19h lost · 80 breakdowns · down on 59 of 60 days 54.9%
5. 5Mark Twain Riverboat16d 13h lost · 44 breakdowns · down on 60 of 60 days 56.4%
6. 6Haunted Mansion Holiday14d 21h lost · 19 breakdowns · down on 60 of 60 days 62.5%
7. 7Mad Tea Party11d 1h lost · 7 breakdowns · down on 59 of 60 days 70.4%
8. 8Roger Rabbit's Car Toon Spin8d 18h lost · 152 breakdowns · down on 60 of 60 days 77.1%
9. 9Mickey & Minnie's Runaway Railway5d 18h lost · 78 breakdowns · down on 60 of 60 days 85%
10. 10Alice in Wonderland5d 9h lost · 119 breakdowns · down on 60 of 60 days 86%
11. 11Star Wars: Rise of the Resistance5d 2h lost · 73 breakdowns · down on 60 of 60 days 86.6%
12. 12Peter Pan's Flight5d 0h lost · 107 breakdowns · down on 60 of 60 days 86.9%
13. 13Tiana's Bayou Adventure4d 17h lost · 93 breakdowns · down on 60 of 60 days 87.4%
14. 14Chip 'n' Dale's GADGETcoaster4d 3h lost · 52 breakdowns · down on 60 of 60 days 89.2%
15. 15Jungle Cruise3d 23h lost · 68 breakdowns · down on 60 of 60 days 89.4%
16. 16Mr. Toad's Wild Ride3d 18h lost · 100 breakdowns · down on 60 of 60 days 90.2%
17. 17Matterhorn Bobsleds3d 13h lost · 64 breakdowns · down on 60 of 60 days 90.6%
18. 18Pinocchio's Daring Journey3d 12h lost · 87 breakdowns · down on 60 of 60 days 90.8%
19. 19Snow White's Enchanted Wish3d 12h lost · 74 breakdowns · down on 60 of 60 days 90.9%
20. 20King Arthur Carrousel3d 11h lost · 72 breakdowns · down on 60 of 60 days 91%
21. 21Big Thunder Mountain Railroad2d 17h lost · 54 breakdowns · down on 60 of 60 days 92.8%
22. 22Pirates of the Caribbean2d 8h lost · 38 breakdowns · down on 59 of 60 days 93.8%
23. 23Space Mountain2d 5h lost · 31 breakdowns · down on 60 of 60 days 94.1%
24. 24The Many Adventures of Winnie the Pooh2d 5h lost · 99 breakdowns · down on 60 of 60 days 94.1%
25. 25"it's a small world"1d 20h lost · 42 breakdowns · down on 60 of 60 days 95.2%
26. 26Buzz Lightyear Astro Blasters1d 16h lost · 38 breakdowns · down on 59 of 60 days 95.6%
27. 27Disneyland Railroad1d 5h lost · 35 breakdowns · down on 60 of 60 days 96.8%
28. 28Casey Jr. Circus Train20h 40m lost · 36 breakdowns · down on 59 of 60 days 97.7%
29. 29Finding Nemo Submarine Voyage19h 51m lost · 11 breakdowns · down on 59 of 60 days 97.8%
30. 30Dumbo the Flying Elephant18h 51m lost · 42 breakdowns · down on 60 of 60 days 98%
31. 31Astro Orbitor18h 8m lost · 17 breakdowns · down on 58 of 60 days 98%
32. 32Storybook Land Canal Boats16h 28m lost · 34 breakdowns · down on 60 of 60 days 98.2%
33. 33Millennium Falcon: Smugglers Run4h 36m lost · 3 breakdowns · down on 60 of 60 days 99.5%
34. 34Star Tours - The Adventures Continue4h 16m lost · 5 breakdowns · down on 59 of 60 days 99.6%
35. 35Autopia3h 21m lost · 4 breakdowns · down on 58 of 60 days 99.6%

Breakdowns cluster at 8pm, with 420 of the 1,794 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 434 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. The other 16 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 6 Sept, when 22.7% of the park's ride hours were lost and 35 of 36 rides went down at some point.