The Nissan Altima is not quite sporty but is an overall highly competent performer.
Let's start with the variable compression engine that can physically change the engine's performance characteristics on demand to maximize power and fuel efficiency. Nissan's use of VC technology certainly pays dividends here. What we have is an engine that offers strong low-end grunt while also delivering quiet and efficient highway cruising.
The Altima's ride is comfortable and compliant while its handling is a tad vague for my taste. It certainly isn't as sporty to drive as the Accords and Camrys we have tested in the past year.
With that said, the Altima is far from unpleasant in its driving dynamics. It just doesn't wow you enough write home about it.