Detailed item info Model OverviewThe standard Sentra models come with a 2. 0-liter four-cylinder engine that makes 140 horsepower. It's offered mated to a six-speed manual transmission or a continuously variable automatic transmission. The sporty SE-R models get a 2. 5-liter four-cylinder engine. rated at 177 horsepower for the SE-R and 200 hp for the Spec V. The SE-R's engine has a number of improvements that make it ideal for the performance model. including crown-shaped pistons. a higher compression ratio and a higher rev limit of 7000 rpm. Meanwhile. the 2. 0-liter engine in the other models is tuned for low-rpm responsiveness and good fuel economy. making it well-suited to the CVT. In this trim. the 2. 0-liter Sentra is rated at 25 mpg city. 33 highway. The 2. 0-liter models have ride quality than is better than is typical for the small-car class. Underneath. the Sentra features a front independent strut design and torsion-beam rear suspension. The SE-R comes with a sport-tuned version of the same suspension. along with an upgraded four-wheel disc brakes and V-rated tires. The CVT version comes with steering-wheel paddle shifters and simulated gears for better control in spirited driving. The Spec V has the goods to be track-ready. with higher-rate springs. shocks and bushings. as well as W-rated performance tires. high-performance brakes and body bracing. The Spec V model can be specified with a helical limited-slip differential for those who want to make the most of its high-performance potential. Inside. SE-R models get a number of exclusive features such as sport seats. special seat fabric. aluminum pedals. a leather steering wheel and additional gauges. Spec V models also get contrasting red stitching and red seatbelts. Trunk space can be expanded for longer items with a pass-through. and the back seat can fold completely forward for a longer cargo floor and is split 60/40. A so-called Divide-N-Hide trunk divider has a pop-up divider wall. keeping items from rolling around and has hooks for grocery bags. Throughout the interior there are various cubbies and cup holders. including a glove box large enough to hold an 8x11-inch tablet. All Sentra models come with front seat-mounted side airbags. roof-mounted curtain side bags good for front and rear outboard occupants. and Active Head Restraints in front. Anti-lock brakes are not available on the base 2. 0 model but standard on all others. While the base 2. 0 comes with a minimum of standard equipment. the 2. 0 S model brings cruise control. keyless entry. and a sound system with MP3 compatibility. The 2. 0 SL adds leather seats. alloy wheels. a Bluetooth hands-free calling interface. XM Satellite Radio and the Intelligent Key system. SE-R models come with standard power windows and locks. and a six-speaker MP3 audio system. Top options include a 340-watt Rockford Fosgate audio system. a moonroof and heated seats.