Released in the USA on the same day as Star Wars: The Force Awakens (2015). 20th Century Fox, which released this film, released the previous Star Wars films before the Disney acquisition of Lucasfilm.
The first Alvin and the Chipmunks movie to be all digital, both in picture and in sound. The previous 3 movies had the chipmunks' voices treated via analog audio tape speed changes. "Road Chip" did not use any analog audio recording. All speed and pitch changes were done digitally.
This is the lowest grossing film out of the 4-film "Chipmunk" series and the only one to not earn $100 million or more at the domestic box office. This film made $85.9 million domestically and $234.8 million worldwide. This is likely a result of trying (and failing) to go up against the highly anticipated Star Wars: The Force Awakens (2015) at the box office, which made more money in one weekend domestically than this film made worldwide in total ($248 million), and went on to make over $2 billion and become the 3rd highest grossing film of all time.
At one point, Justin Long did not show interest in returning to voice Alvin in the fourth installment of the franchise and that he would be replaced by Matthew Lillard. However, Lillard was unavailable because he was busy working on Scooby-Doo projects and after giving it a second thought, Long returned to voice Alvin once again for this film.
Unlike the first three movies this is the first and only Alvin and the Chipmunks Live action film to have a new story plot and not a reused story plot from the original Alvin & the Chipmunks (1983) TV series.
The only Alvin and the Chipmunks film not to be released the same year as a Harry Potter film. Alvin and the Chipmunks (2007) was released the same year as Harry Potter and the Order of the Phoenix (2007). Alvin and the Chipmunks: The Squeakquel (2009) was released the same year as Harry Potter and the Half-Blood Prince (2009). Alvin and the Chipmunks: Chipwrecked (2011) was released the same year as Harry Potter and the Deathly Hallows Part 2 (2011).
Each Chipmunk had an improv comedian hired to read their respective lines to the actors on set while green screen puppets were used for eyelines. Ron Ogden, the improv comedian reader for Theordore was asked to improvise a few songs to cover for a vocal aria Theodore does in the mini golf scenes. The use of Sir Mix A Lot's "Baby Got Back" in the films trailer and film was directly inspired by Ogden's improvised choices!