Available in two models, SE-R and SE-R Spec-V, Nissan hopes that it remains an edgy performance leader in the Sentra lineup. The SE-R faces stiff competition from the Civic Si sedan, the excellent Volkswagen GTI five-door and the upcoming Dodge Caliber SRT4. The 2007 Nissan Sentra SE-R and Spec V will go on sale in March 2007.