Disney California Adventure ride reliability

1. 1Silly Symphony Swings16d 6h lost · 1 breakdown · down on 29 of 29 days 0%
2. 2Guardians of the Galaxy - Monsters After Dark15d 20h lost · 1 breakdown · down on 29 of 29 days 4.4%
3. 3Luigi's Honkin' Haul-O-Ween14d 18h lost · 4 breakdowns · down on 29 of 29 days 12.5%
4. 4Toy Story Midway Mania!14d 14h lost · 1 breakdown · down on 28 of 29 days 13.7%
5. 5Mater's Graveyard JamBOOree14d 13h lost · 0 breakdowns · down on 29 of 29 days 13.7%
6. 6Golden Zephyr5d 4h lost · 77 breakdowns · down on 29 of 29 days 68.5%
7. 7Luigi's Rollickin' Roadsters3d 3h lost · 70 breakdowns · down on 29 of 29 days 79.2%
8. 8Pixar Pal-A-Round - Swinging3d 5h lost · 33 breakdowns · down on 29 of 29 days 80.2%
9. 9Pixar Pal-A-Round – Non-Swinging3d 3h lost · 30 breakdowns · down on 29 of 29 days 80.7%
10. 10Mater's Junkyard Jamboree2d 1h lost · 1 breakdown · down on 28 of 29 days 86%
11. 11Incredicoaster1d 21h lost · 17 breakdowns · down on 29 of 29 days 88%
12. 12Grizzly River Run1d 10h lost · 30 breakdowns · down on 29 of 29 days 91%
13. 13WEB SLINGERS: A Spider-Man Adventure1d 9h lost · 42 breakdowns · down on 29 of 29 days 91.4%
14. 14Jessie's Critter Carousel1d 2h lost · 39 breakdowns · down on 29 of 29 days 93.1%
15. 15Goofy's Sky School1d 2h lost · 37 breakdowns · down on 28 of 29 days 93.3%
16. 16Guardians of the Galaxy - Mission: BREAKOUT!16h 40m lost · 3 breakdowns · down on 28 of 29 days 95.1%
17. 17The Little Mermaid - Ariel's Undersea Adventure18h 31m lost · 14 breakdowns · down on 28 of 29 days 95.3%
18. 18Inside Out Emotional Whirlwind17h 58m lost · 42 breakdowns · down on 29 of 29 days 95.4%
19. 19Radiator Springs Racers17h 41m lost · 28 breakdowns · down on 28 of 29 days 95.5%
20. 20Monsters, Inc. Mike & Sulley to the Rescue!14h 3m lost · 28 breakdowns · down on 28 of 29 days 96.5%
21. 21Soarin’ Across America4h 49m lost · 5 breakdowns · down on 28 of 29 days 98.7%
22. 22Jumpin' Jellyfish4h 59m lost · 8 breakdowns · down on 27 of 29 days 98.8%

Breakdowns cluster at 8pm, with 79 of the 497 recorded closures starting in that hour - so the ride you most want is safest earlier in the day, not saved for last. A further 79 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. A further 14 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 23 Jul, when 40.1% of the park's ride hours were lost and 15 of 22 rides went down at some point.