Universal Islands Of Adventure ride reliability

1. 1Skull Island: Reign of Kong12d 4h lost · 37 breakdowns · down on 59 of 60 days 57.3%
2. 2Popeye & Bluto's Bilge-Rat Barges®9d 4h lost · 103 breakdowns · down on 60 of 60 days 67.8%
3. 3Hogwarts Express™ - Hogsmeade™ Station7d 2h lost · 56 breakdowns · down on 59 of 60 days 75.1%
4. 4Dudley Do-Right's Ripsaw Falls®5d 4h lost · 62 breakdowns · down on 54 of 60 days 81.7%
5. 5Hagrid's Magical Creatures Motorbike Adventure™5d 3h lost · 79 breakdowns · down on 56 of 60 days 82.1%
6. 6Pteranodon Flyers4d 20h lost · 77 breakdowns · down on 56 of 60 days 83%
7. 7Flight of the Hippogriff™4d 5h lost · 81 breakdowns · down on 53 of 60 days 85.2%
8. 8Jurassic World VelociCoaster4d 5h lost · 101 breakdowns · down on 58 of 60 days 85.3%
9. 9The High in the Sky Seuss Trolley Train Ride!™3d 5h lost · 79 breakdowns · down on 48 of 60 days 88.7%
10. 10The Incredible Hulk Coaster®3d 2h lost · 52 breakdowns · down on 46 of 60 days 89.1%
11. 11Doctor Doom's Fearfall®2d 19h lost · 44 breakdowns · down on 40 of 60 days 90.3%
12. 12One Fish, Two Fish, Red Fish, Blue Fish™2d 15h lost · 50 breakdowns · down on 45 of 60 days 90.8%
13. 13Storm Force Accelatron®2d 12h lost · 67 breakdowns · down on 57 of 60 days 91.1%
14. 14Caro-Seuss-el™1d 6h lost · 19 breakdowns · down on 36 of 60 days 95.5%
15. 15Harry Potter and the Forbidden Journey™1d 6h lost · 32 breakdowns · down on 33 of 60 days 95.6%
16. 16The Amazing Adventures of Spider-Man®20h 3m lost · 30 breakdowns · down on 41 of 60 days 96.9%
17. 17The Cat in The Hat™20h 16m lost · 30 breakdowns · down on 43 of 60 days 97%
18. 18Ollivanders™ Experience in Hogsmeade™10h 26m lost · 41 breakdowns · down on 47 of 60 days 98.4%

Breakdowns cluster at 5pm, with 143 of the 1,037 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 260 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. The other 3 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 2 Sept, when 30.3% of the park's ride hours were lost and 17 of 19 rides went down at some point.