Universal Epic Universe ride reliability

1. 1Mine-Cart Madness™5d 3h lost · 99 breakdowns · down on 55 of 60 days 80.3%
2. 2Hiccup's Wing Gliders4d 9h lost · 83 breakdowns · down on 57 of 60 days 83.1%
3. 3Fyre Drill3d 20h lost · 61 breakdowns · down on 54 of 60 days 85.2%
4. 4Stardust Racers3d 20h lost · 81 breakdowns · down on 54 of 60 days 85.2%
5. 5Curse of the Werewolf3d 3h lost · 66 breakdowns · down on 53 of 60 days 88.1%
6. 6Harry Potter and the Battle at the Ministry™2d 22h lost · 114 breakdowns · down on 55 of 60 days 88.5%
7. 7Monsters Unchained: The Frankenstein Experiment2d 15h lost · 15 breakdowns · down on 41 of 60 days 90.6%
8. 8Yoshi's Adventure™2d 2h lost · 43 breakdowns · down on 37 of 60 days 92%
9. 9Dragon Racer's Rally2d 2h lost · 40 breakdowns · down on 31 of 60 days 92.1%
10. 10Mario Kart™: Bowser's Challenge1d 3h lost · 59 breakdowns · down on 47 of 60 days 95.4%
11. 11Constellation Carousel1d 1h lost · 27 breakdowns · down on 43 of 60 days 96%
12. 12Meet Toothless and Friends20h 39m lost · 8 breakdowns · down on 17 of 60 days 96.6%
13. 13Bowser Jr. Challenge26m lost · 0 breakdowns · down on 4 of 60 days 99.9%

Breakdowns cluster at 3pm, with 98 of the 687 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 103 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. The other 9 closures start in the 8pm 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 27.6% of the park's ride hours were lost and 13 of 13 rides went down at some point.