The Corolla is rated a "Best in Class" leader by IntelliChoice in several categories, including Fuel Costs, Ownership Costs and Retained Value. Likewise, IntelliChoice gives the Corolla a value rating of "excellent" for its pRedicted five-year total cost of ownership, compared to other vehicles in its class. With its standard four-cylinder engine, reviewers say the Toyota Corolla has adequate power for everyday driving, but its acceleration isn't particularly brisk. A six-speed manual transmission is standard and an automatic is optional. At up to an EPA-estimated 29/38 mpg city/highway, the 2015 Corolla gets good fuel economy for the class. Corolla LE Eco models offer even better fuel economy with up to 30/42 mpg. The Corolla's front seats are comfortable, and there is an impressive amount of rear-seat legroom, according to test drivers. The Corolla's trunk space is about average, though reviewers say its large opening makes it easy to load and unload cargo. Bluetooth and a USB port are standard. Optional features include a rearview camera, proximity key, navigation and Toyota's Entune infotainment system with a 6.1-inch touch screen. Test drivers say that Entune is easy to use and that the display screen has crisp graphics and a logical menus.