Disney California Adventure ride reliability

1. 1Luigi's Rollickin' Roadsters22d 18h lost · 41 breakdowns · down on 60 of 60 days 23.3%
2. 2Mater's Junkyard Jamboree22d 4h lost · 0 breakdowns · down on 60 of 60 days 24.9%
3. 3Guardians of the Galaxy - Monsters After Dark20d 7h lost · 2 breakdowns · down on 60 of 60 days 34.9%
4. 4Silly Symphony Swings15d 11h lost · 49 breakdowns · down on 60 of 60 days 52.5%
5. 5Luigi's Honkin' Haul-O-Ween12d 10h lost · 130 breakdowns · down on 60 of 60 days 62.2%
6. 6Guardians of the Galaxy - Mission: BREAKOUT!10d 15h lost · 44 breakdowns · down on 60 of 60 days 64.5%
7. 7Golden Zephyr10d 2h lost · 117 breakdowns · down on 60 of 60 days 67%
8. 8Toy Story Midway Mania!10d 0h lost · 13 breakdowns · down on 59 of 60 days 70.6%
9. 9Mater's Graveyard JamBOOree8d 19h lost · 3 breakdowns · down on 59 of 60 days 74.7%
10. 10Incredicoaster5d 7h lost · 46 breakdowns · down on 60 of 60 days 82.3%
11. 11Pixar Pal-A-Round - Swinging4d 12h lost · 68 breakdowns · down on 60 of 60 days 85.7%
12. 12Pixar Pal-A-Round – Non-Swinging4d 11h lost · 65 breakdowns · down on 60 of 60 days 85.8%
13. 13Grizzly River Run3d 6h lost · 68 breakdowns · down on 60 of 60 days 89.2%
14. 14Goofy's Sky School2d 19h lost · 76 breakdowns · down on 60 of 60 days 90.4%
15. 15WEB SLINGERS: A Spider-Man Adventure2d 15h lost · 73 breakdowns · down on 60 of 60 days 91.2%
16. 16Radiator Springs Racers2d 11h lost · 65 breakdowns · down on 60 of 60 days 91.6%
17. 17The Little Mermaid - Ariel's Undersea Adventure2d 3h lost · 34 breakdowns · down on 60 of 60 days 93%
18. 18Inside Out Emotional Whirlwind1d 9h lost · 91 breakdowns · down on 60 of 60 days 95.4%
19. 19Monsters, Inc. Mike & Sulley to the Rescue!1d 8h lost · 54 breakdowns · down on 59 of 60 days 95.6%
20. 20Jessie's Critter Carousel1d 9h lost · 58 breakdowns · down on 60 of 60 days 95.7%
21. 21Jumpin' Jellyfish16h 24m lost · 20 breakdowns · down on 58 of 60 days 97.8%
22. 22Soarin’ Across America6h 31m lost · 4 breakdowns · down on 57 of 60 days 99%

Breakdowns cluster at 2pm, with 130 of the 1,108 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 204 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. The other 13 closures start in the 9pm 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 16 Aug, when 31.7% of the park's ride hours were lost and 22 of 22 rides went down at some point.