The 2015 Toyota Prius is part of the model's third generation, known for its efficiency and modern, futuristic design. It's powered by a 1.8-liter four-cylinder engine and a pair of electric motor/generators that deliver a combined 134 horsepower. Mated to a continuously variable automatic transmission, it offers impressive fuel efficiency ratings of 51 mpg city and 48 mpg highway. The Prius is available in four trims: Two, Three, Four and Five. High-tech elements include a 6.1-inch touchscreen display, Bluetooth, and a rearview camera, with navigation available in higher trims. Detailed safety features include seven airbags and stability control; the Prius was a top safety pick from IIHS in 2015.