The six-cylinder S500 is rated at 21 mpg in the city and 30 mpg on the highway. Stepping up to the V-8-powered S580 drops those estimates to 16 mpg city and 25 highway. We’ve tested the latter on our 75-mph fuel-economy route, which is part of our extensive testing regimen, where it achieved 32 mpg on the highway beating its EPA estimate by nearly 10 mpg. For more information about the S-class’s fuel economy, visit the EPA’s website.
Inside, the S-class prioritizes screens. Lots of them. The sedan is available with up to five, including a giant center touchscreen and a 12.3-inch digital gauge cluster. The latter works in concert with other technology to create a three-dimensional effect, but—thankfully—it can be turned off if you’d prefer the screens have a conventional appearance. There’s also an enhanced head-up display that will show navigation directions in augmented reality. Basically, arrows move and turn in real-time to supposedly better assist the driver. The build quality and cabin materials live up to Mercedes’ upscale standards, and the sedan provides limousine-like accommodations for all passengers, specifically those riding in the back. The new model’s rear-seat area offers slightly increased headroom and legroom, and it can also be equipped with power-adjustable reclining seats that have massage functions and extensive heating elements. Along with being physically coddled, those in the back should be mentally entertained by the optional rear-seat entertainment system that adds two 11.6-inch screens on the front seatbacks as well as the interactive LED interior lighting.