Proudly sporting a new look since last year, the Altima continues to set itself apart from the competition with a comfortable ride and a spacious passenger compartment. Featuring a 179-horsepower four-cylinder engine, the Altima comes in several trim levels (base, S, SR, SV and SL). For more power, there's the V6 version that, with 270 horsepower, is one of most powerful cars in its class. The only available transmission is a CVT automatic.