Magic Kingdom ride reliability

1. 1Main Street Vehicles14d 22h lost · 58 breakdowns · down on 60 of 60 days 55.2%
2. 2Walt Disney World Railroad - Fantasyland8d 5h lost · 97 breakdowns · down on 60 of 60 days 74.5%
3. 3Tiana's Bayou Adventure4d 12h lost · 64 breakdowns · down on 60 of 60 days 86%
4. 4Big Thunder Mountain Railroad4d 1h lost · 60 breakdowns · down on 60 of 60 days 87.6%
5. 5Walt Disney World Railroad - Main Street, U.S.A.3d 16h lost · 44 breakdowns · down on 25 of 60 days 88%
6. 6Seven Dwarfs Mine Train3d 21h lost · 73 breakdowns · down on 52 of 60 days 88.1%
7. 7Jungle Cruise3d 4h lost · 55 breakdowns · down on 60 of 60 days 89.7%
8. 8Space Mountain3d 6h lost · 43 breakdowns · down on 36 of 60 days 90%
9. 9The Barnstormer2d 23h lost · 72 breakdowns · down on 50 of 60 days 90.9%
10. 10Astro Orbiter2d 20h lost · 57 breakdowns · down on 44 of 60 days 91.2%
11. 11The Magic Carpets of Aladdin2d 11h lost · 49 breakdowns · down on 60 of 60 days 92.3%
12. 12The Many Adventures of Winnie the Pooh2d 9h lost · 76 breakdowns · down on 43 of 60 days 92.5%
13. 13Dumbo the Flying Elephant2d 6h lost · 52 breakdowns · down on 38 of 60 days 93%
14. 14Tomorrowland Transit Authority PeopleMover1d 23h lost · 46 breakdowns · down on 38 of 60 days 93.9%
15. 15Pirates of the Caribbean1d 15h lost · 31 breakdowns · down on 60 of 60 days 95.1%
16. 16Tomorrowland Speedway1d 6h lost · 25 breakdowns · down on 19 of 60 days 95.9%
17. 17Haunted Mansion1d 6h lost · 11 breakdowns · down on 60 of 60 days 96.2%
18. 18Prince Charming Regal Carrousel1d 6h lost · 54 breakdowns · down on 51 of 60 days 96.3%
19. 19Buzz Lightyear’s Space Ranger Spin1d 1h lost · 25 breakdowns · down on 33 of 60 days 96.6%
20. 20TRON Lightcycle / Run22h 5m lost · 24 breakdowns · down on 59 of 60 days 97%
21. 21"it's a small world"14h 52m lost · 7 breakdowns · down on 18 of 60 days 98%
22. 22Under the Sea - Journey of The Little Mermaid15h 54m lost · 14 breakdowns · down on 24 of 60 days 98.1%
23. 23Mad Tea Party8h 27m lost · 17 breakdowns · down on 28 of 60 days 98.9%
24. 24Peter Pan's Flight7h 36m lost · 10 breakdowns · down on 24 of 60 days 99.1%

Breakdowns cluster at 4pm, with 171 of the 1043 recorded closures starting in that hour - so the ride you most want is safest earlier in the day, not saved for last. A further 178 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. A further 21 closures start in the 10pm 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 23 Aug, when 26.3% of the park's ride hours were lost and 19 of 25 rides went down at some point.