INSIDE: Hyundai claims the passenger compartment is the best in its class with 123 cubic feet (3.48 cubic meters) of volume including the best headroom and rear shoulder room. BMW's 5-Series, the market's top seller, has 116 cubic feet (3.29 cubic meters), while the Mercedes E-Class has 113.1, according to Hyundai. The Genesis gets a simplified instrument panel with a more intuitive layout. It has storage bins for mobile electronic devices.