The Mayor's glasses disappear/reappear while Canary has him pinned.
The officer who pulls Laurel over says she is .6 past the legal limit. If she had that much alcohol in her system, regardless of what Starling City's limit is, she would be dead.
When Laurel is listening to music in the DA's office her phone displays the correct album cover, but incorrectly lists the song as "Out of My League" while the song is actually "Youth" by Daughter.
The prison aboard the ship is at least 3 times bigger than the ship shown can accommodate.