For 2008, the Nissan Sentra comes available in six trims, base, S (in automatic and manual transmissions), SL, SE-R, and SE-R Spec V. The base, S, and SL models come powered by a 2.0L 140-hp engine; while the SE-R and SE-R Spec V come equipped with a 2.5L 200-hp engine. Standard features on the SL include keyless remote entry with intelligent key, leather seats, and Bluetooth wireless connectivity with hands-free telephone. Safety features include tire pressure monitor, trunk entrapment release, dual front airbags, front and rear head curtain airbags, and front-side impact airbags. A Rockford Fosgate Audio Package offering a Rockford Fosgate AM/FM Stereo with six-disc in-dash CD changer with MP3 capabilities is available on all models except for the base.