The Genesis may be the most derivative of all of Hyundai's current models, obviously echoing many of the design cues established by Mercedes-Benz and Lexus. If you're going to copy, then copy the best.
The R-Spec model features a unique suspension tune that's more performance oriented than the standard setup. All Genesis sedans feature SACHS Amplitude Damping Shock Absorbers, but no adaptive suspension option.
It may be sharper than your average Genesis and its numbers look good on paper, but the 5.0 R-Spec's performance paled in comparison to that of the latest Lexus LS 460. Mostly this is due to the eight-speed automatic transmission's lack of a sport program.
The R-Spec features unique 19-inch wheels with a more aggressive look, but the tires aren't any wider than the stock rubber (235-width). Slightly wider (245-width), stickier summer meat is available as an option.
Compared with the rest of Hyundai's line, the Genesis' cabin is a massive step up in quality. However, it's not hard to see where the automaker has cut corners to keep the price down -- particularly when compared with other luxury sedans.
For example, the leather-wrapped steering wheel's central hub is made of the same dull plastic that we'd expect to see in a Hyundai Accent. You'd think Hyundai would invest in better materials here, directly in the driver's line of sight.
The nicest bit of the Genesis' interior is the controller for the infotainment system. This metallic control knob has a nice heavy feel and is flanked by a bank of buttons that makes the rest of the interior look cheap by comparison.
The Genesis 5.0 R-Spec package is mostly an appearance and badge job, not really offering much difference in performance over the standard Genesis sedan. Manage your expectations, and you'll find that it can also be a fantastic value.