On that matter, Nissan says that most CVT-equipped versions of the Sentra will return up to 39 mpg on the highway and a best-in-class 34 mpg as an EPA Combined figure—likely placing their EPA City rating at an impressive 30 mpg. A special FE+ model will hit 40 mpg on the highway.
The sleek exterior of the 2013 Nissan Sentra allows a low 0.29 coefficient of drag, and that’s one of the keys to this model’s excellent highway fuel economy. The other is the continuously variable automatic transmission (CVT), which
For an extra $400, you can specify a FE+ (fuel economy) package on the Sentra that adds a rear spoiler and low-rolling-resistance tires, as well as a few other aerodynamic improvements, so as to obtain the better 40-mpg highway rating.
The entire 2014 Sentra lineup includes a smart alternator that decouples from the engine (and its charging duty) during acceleration to help improve fuel efficiency, and reengages at full capacity during braking.
Also, no matter which model or trim level you get, all 2014 Nissan Sentra models include Normal, Eco, and Sport modes that affect throttle response and transmission tuning, while Eco mode also reduces air-conditioning draw—a fine point that's also offered by Honda vehicles but not with the equivalent feature in Kias and Hyundais.
In Eco Mode with the manual transmission, the gauge cluster advises the driver on which gear to be in at the moment for best fuel efficiency.