Universal Epic Universe ride reliability

1. 1Mine-Cart Madness™5d 8h lost · 95 breakdowns · down on 54 of 60 days 80.2%
2. 2Hiccup's Wing Gliders4d 23h lost · 96 breakdowns · down on 58 of 60 days 81.6%
3. 3Fyre Drill4d 18h lost · 69 breakdowns · down on 57 of 60 days 82.3%
4. 4Stardust Racers4d 10h lost · 94 breakdowns · down on 56 of 60 days 83.7%
5. 5Curse of the Werewolf3d 9h lost · 79 breakdowns · down on 57 of 60 days 87.4%
6. 6Harry Potter and the Battle at the Ministry™2d 17h lost · 95 breakdowns · down on 51 of 60 days 89.5%
7. 7Monsters Unchained: The Frankenstein Experiment2d 22h lost · 17 breakdowns · down on 44 of 60 days 89.8%
8. 8Yoshi's Adventure™2d 18h lost · 56 breakdowns · down on 43 of 60 days 89.9%
9. 9Dragon Racer's Rally2d 13h lost · 50 breakdowns · down on 37 of 60 days 90.7%
10. 10Mario Kart™: Bowser's Challenge1d 5h lost · 66 breakdowns · down on 48 of 60 days 95.3%
11. 11Constellation Carousel23h 33m lost · 27 breakdowns · down on 40 of 60 days 96.3%
12. 12Meet Toothless and Friends18h 41m lost · 7 breakdowns · down on 16 of 60 days 97%
13. 13Bowser Jr. Challenge15m lost · 0 breakdowns · down on 2 of 60 days 100%

Breakdowns cluster at 5pm, with 116 of the 733 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 104 rides simply were not running at opening, which is a late start rather than a fault and is counted separately. The other 18 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.