Disneyland Park ride reliability

1. 1Sailing Ship Columbia32d 17h lost · 12 breakdowns · down on 60 of 60 days 6.8%
2. 2Davy Crockett's Explorer Canoes33d 0h lost · 11 breakdowns · down on 60 of 60 days 7.3%
3. 3Haunted Mansion Holiday24d 22h lost · 18 breakdowns · down on 60 of 60 days 30.1%
4. 4Haunted Mansion24d 19h lost · 18 breakdowns · down on 58 of 60 days 35.2%
5. 5Mark Twain Riverboat15d 7h lost · 25 breakdowns · down on 53 of 60 days 60.4%
6. 6Roger Rabbit's Car Toon Spin10d 19h lost · 131 breakdowns · down on 59 of 60 days 72.1%
7. 7Mickey & Minnie's Runaway Railway8d 22h lost · 85 breakdowns · down on 59 of 60 days 77.1%
8. 8Matterhorn Bobsleds8d 2h lost · 62 breakdowns · down on 57 of 60 days 77.6%
9. 9King Arthur Carrousel5d 14h lost · 61 breakdowns · down on 59 of 60 days 79.1%
10. 10Indiana Jones™ Adventure7d 22h lost · 102 breakdowns · down on 56 of 60 days 79.2%
11. 11Peter Pan's Flight7d 20h lost · 102 breakdowns · down on 59 of 60 days 79.8%
12. 12Alice in Wonderland7d 17h lost · 95 breakdowns · down on 59 of 60 days 80.2%
13. 13Tiana's Bayou Adventure7d 4h lost · 84 breakdowns · down on 56 of 60 days 81.5%
14. 14Chip 'n' Dale's GADGETcoaster7d 0h lost · 55 breakdowns · down on 59 of 60 days 82.1%
15. 15Star Wars: Rise of the Resistance6d 23h lost · 55 breakdowns · down on 56 of 60 days 82.1%
16. 16Mr. Toad's Wild Ride6d 13h lost · 92 breakdowns · down on 59 of 60 days 83.2%
17. 17Pinocchio's Daring Journey6d 9h lost · 87 breakdowns · down on 59 of 60 days 83.6%
18. 18Snow White's Enchanted Wish6d 5h lost · 72 breakdowns · down on 59 of 60 days 84.1%
19. 19Jungle Cruise5d 23h lost · 60 breakdowns · down on 53 of 60 days 84.5%
20. 20Big Thunder Mountain Railroad5d 9h lost · 53 breakdowns · down on 56 of 60 days 86.1%
21. 21Space Mountain4d 15h lost · 29 breakdowns · down on 56 of 60 days 88.2%
22. 22Pirates of the Caribbean4d 14h lost · 33 breakdowns · down on 54 of 60 days 88.3%
23. 23The Many Adventures of Winnie the Pooh4d 13h lost · 82 breakdowns · down on 56 of 60 days 88.4%
24. 24"it's a small world"4d 8h lost · 48 breakdowns · down on 58 of 60 days 89%
25. 25Buzz Lightyear Astro Blasters4d 6h lost · 32 breakdowns · down on 53 of 60 days 89.1%
26. 26Disneyland Railroad4d 0h lost · 35 breakdowns · down on 54 of 60 days 89.8%
27. 27Finding Nemo Submarine Voyage3d 12h lost · 10 breakdowns · down on 48 of 60 days 91.1%
28. 28Dumbo the Flying Elephant3d 9h lost · 45 breakdowns · down on 58 of 60 days 91.4%
29. 29Storybook Land Canal Boats3d 8h lost · 43 breakdowns · down on 59 of 60 days 91.5%
30. 30Casey Jr. Circus Train3d 5h lost · 22 breakdowns · down on 53 of 60 days 91.8%
31. 31Mad Tea Party3d 4h lost · 9 breakdowns · down on 50 of 60 days 91.9%
32. 32Astro Orbitor3d 1h lost · 15 breakdowns · down on 47 of 60 days 92.3%
33. 33Millennium Falcon: Smugglers Run2d 20h lost · 3 breakdowns · down on 50 of 60 days 92.9%
34. 34Star Tours - The Adventures Continue2d 19h lost · 6 breakdowns · down on 50 of 60 days 92.9%
35. 35Autopia2d 18h lost · 3 breakdowns · down on 48 of 60 days 93.1%

Breakdowns cluster at 8pm, with 431 of the 1666 recorded closures starting in that hour - so the ride you most want is safest earlier in the day, not saved for last. A further 542 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. A further 29 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 31 Jul, when 58.4% of the park's ride hours were lost and 36 of 36 rides went down at some point.