Nilai Komuter Station is situated close to and named after the old town of Nilai, Negeri Sembilan. The station strictly serves as a two-platform train halt for the Rawang-to-Seremban KTM Komuter train service.
The station, as are virtually all small train halts along the Komuter lines, is situated along two lanes of railroad (two basic routes) designated for trains traveling northbound or southbound. Due to its use as a connection from the KLIA, as well as colleges a distance away, the station receives a substantially large number of passengers throughout its operational hours.
Initially consisting of a small station building with one operational ticket counter and two ticket vending machines, and covered platforms, the station had since undergone significant extensions in 2005 and 2006 to support more passengers.
The station is notable as a link to Sepang, where the Sepang International Circuit and the Kuala Lumpur International Airport (KLIA) are situated. For the former, tents and additional ticket counters are usually prepared in anticipation of an increased influx of passengers during the Malaysian leg of the Formula One tournament.