In an interview Frank Grillo said that he loved the black car so much he offered to buy it but he wasn't allowed.
The Purge is a day after the spring equinox. Spring is a symbol for rebirth or cleansing, which is the purpose of The Purge.
Scenes from the first film can be seen during the credits as archive footage.
Edwin Hodge, Tyler Osterkamp, and Nathan Clarkson are the only actors with recurring roles from The Purge (2013).