For 2008, the Nissan Altima returns available in several trims: Base, S (in automatic and manual transmissions), SE (in automatic and manual transmissions), and SL. The base and S models come powered by a 2.5L 170-hp engine; while the SE and SL models come with a 3.5L 270-hp V6 engine. Standard amenities on the SL include heated mirrors, heated seats, front and rear mud guards, moon roof, and Bluetooth wireless connectivity with hands-free telephone. Safety features include trunk entrapment release, dual front airbags, front and rear head curtain airbags, and front-side impact airbags. Two exterior paint colors have been added: Code Red and Azure Blue.