The 2011 Nissan Altima is part of the nameplate’s fourth-generation lineup. This popular sedan comes in four different trims: 2.5, 2.5 S, 3.5 SR, and 3.5 SR. Power is derived from either a base 175-hp 2.5-liter inline-4 engine, or a more potent 270-hp 3.5-liter V6, both mated to a continuously variable automatic transmission (CVT). A 6-speed manual transmission is also available for the 3.5 SR coupe. The Altima offers decent fuel economy with an average of 23 MPG city and 32 MPG highway. Notable tech features include a push-button ignition, Bluetooth® Hands-free Phone System, and an available Bose® Premium Audio System. Safety-wise, it features six standard airbags, Vehicle Dynamic Control (VDC), and an Anti-lock Braking System (ABS).