Described as a "feel-good" clap-and-bounce track, "Luv" is an electro-R&B song, with Jackson relating a car crash to falling in love.

The song received generally positive reviews from music critics, who agreed that it resembles her early hits and highlighted it as one of the album's best tracks.

"[7] In the same vein, Michael Arceneaux of PopMatters called it "groovy and catchy follow-up to 'Feedback' that reminds listeners of the early stages of the pop star’s career when she sang about her affections innocently.

"[10] Ann Powers of Los Angeles Times wrote a mixed review, writing that the song "grabs the essence of previous hits by Britney Spears, T-Pain and Kanye West, without so much as a patent application.

[13] Jackson first performed "Luv" on America United: In Support of Our Troops, which aired on September 7, 2008, on ABC, in a medley with "Rhythm Nation" (1989).