The Nissan Sentra has been given a makeover that helps to make it relevant once against in the compact sedan segment. The Nissan Sentra is notable for its very large interior, which is unusual in its class, as well as its fuel efficiency. The latter is made possible by a fresh 1.8-liter, four-cylinder engine that pushes out 130 horsepower and 128 lb-ft of torque regardless of trim level. A continuously-variable automatic is the Sentra's exclusive transmission choice.