Disney California Adventure ride reliability

1. 1Luigi's Rollickin' Roadsters26d 22h lost · 14 breakdowns · down on 60 of 60 days 9.3%
2. 2Mater's Junkyard Jamboree26d 16h lost · 0 breakdowns · down on 60 of 60 days 10%
3. 3Guardians of the Galaxy - Monsters After Dark17d 9h lost · 3 breakdowns · down on 60 of 60 days 42.1%
4. 4Guardians of the Galaxy - Mission: BREAKOUT!12d 20h lost · 53 breakdowns · down on 60 of 60 days 57.2%
5. 5Silly Symphony Swings10d 17h lost · 62 breakdowns · down on 59 of 60 days 65.9%
6. 6Golden Zephyr9d 9h lost · 110 breakdowns · down on 60 of 60 days 68.6%
7. 7Luigi's Honkin' Haul-O-Ween8d 6h lost · 169 breakdowns · down on 60 of 60 days 73.7%
8. 8Incredicoaster5d 14h lost · 47 breakdowns · down on 59 of 60 days 81.4%
9. 9Toy Story Midway Mania!4d 22h lost · 14 breakdowns · down on 59 of 60 days 85.2%
10. 10Pixar Pal-A-Round - Swinging3d 19h lost · 65 breakdowns · down on 59 of 60 days 87.6%
11. 11Pixar Pal-A-Round – Non-Swinging3d 19h lost · 64 breakdowns · down on 59 of 60 days 87.6%
12. 12Grizzly River Run3d 12h lost · 75 breakdowns · down on 60 of 60 days 88%
13. 13Goofy's Sky School3d 10h lost · 86 breakdowns · down on 60 of 60 days 88.4%
14. 14Mater's Graveyard JamBOOree3d 15h lost · 4 breakdowns · down on 59 of 60 days 89.5%
15. 15Radiator Springs Racers2d 23h lost · 72 breakdowns · down on 60 of 60 days 89.9%
16. 16WEB SLINGERS: A Spider-Man Adventure2d 16h lost · 67 breakdowns · down on 60 of 60 days 90.8%
17. 17The Little Mermaid - Ariel's Undersea Adventure2d 11h lost · 32 breakdowns · down on 60 of 60 days 91.6%
18. 18Inside Out Emotional Whirlwind1d 16h lost · 104 breakdowns · down on 60 of 60 days 94.5%
19. 19Monsters, Inc. Mike & Sulley to the Rescue!1d 15h lost · 60 breakdowns · down on 58 of 60 days 94.6%
20. 20Jessie's Critter Carousel1d 10h lost · 65 breakdowns · down on 60 of 60 days 95.5%
21. 21Jumpin' Jellyfish17h 10m lost · 23 breakdowns · down on 57 of 60 days 97.6%
22. 22Soarin’ Across America6h 25m lost · 4 breakdowns · down on 54 of 60 days 99.1%

Breakdowns cluster at 2pm, with 140 of the 1,180 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 211 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.