Exterior Styling:
Genesis is a bit of a Voltron car. It looks like nothing else, but resembles everything else. The new BMW 5 is back to a more conservative profile for BMW, which in my mind is a good thing. The last product cycle was very polarizing. BMW Wins
Interior:
Both cars are very well laid out and easy to use. Obviously there's no cost cutting on the BMW, where the Hyundai has some plastic wood, etc. BMW, Both Driver and Passenger get cooled and heated seating, and 18 way adjustable, especially nice are the thigh bolsters that extend out for long trips. Heated steering wheel is a nice luxury. Additionally there is a massage feature, which simply adjusts the height of the buttock portion back and forth to keep you muscles from getting atrophy on those long drives. (however, these are options on the BMW that I paid for). The trunk in the Genesis is much bigger, but it doesn't fold down like in the Bimmer (option again)BMW
Drivetrain:
The V8 in the Hyundai is about as sweet as a V8 can get without being overbearing and thrashy. The Inline 6 is BMW's hallmark engine. The new single turbo version gets good gas mileage. The ZF built 8 speed is a little jerky around town, and you have to be super light on the throttle or else the car will jump on you. When punching the engine, the shifts are precise and immediate. There's some lag on the 6 speed in the Genesis, but over all the car is creamy. Genesis V8
Suspension:
This is where the biggest gap lies with the two cars. The 5 you can manually adjust almost every aspect of the car. Steering,throttle,dampers,roll bars. There are 4 settings, Comfort,Normal,Sport and Sport+. Also you can fully disable the traction control, if you feel like drifitng the car. The car has very distinct personalities. It can be floaty and soft on the highway, on comfort, or aggressive and dangerous on Sport+. The Genesis also has multiple personalities but doesn't seem to go full bore on any of them. (again this is extra on the BMW, dynamic handling package). BMW
Ride Quality:
In terms of ride quality again this is where the two cars are totally different. The ride in the Genesis is a little busy. The rear end pitches a little more than it should. I don't mind it, but it's not a Lexus for sure and some people hate it. I would try and go back and drive the '12 V6 again. My hunch is that the different tires should make a difference on the new car. Some have said that the added weight of the V8 makes the car less prone to a nervous ride over city streets, YRMV. The highway ride on the BMW is much more smooth, but not isolated, in fact just about as perfect as can be. BMW
Steering:
Both the Genesis and BMW use electric steering. Neither are that great. The Genesis is lighter and probably easier to use in the city. The BMW's is weightier but you still don't get much road feel. When driving aggressively the BMW is definitely more quick to respond. Push
Brakes:
Both cars have massive brakes. The rotors on the BMW are huge and are a composite material, and all four are vented, instead of just the fronts in the Hyundai. The BMW also pulses the brakes when it knows it's wet out. Both have electronic brake force distribution. The BMW has the worst brake dust I have ever seen in a car. In practice both could stop the rotation of the earth. Where they differ would probably be on a track, which neither car will ever see. Push
Value for money:
The BMW cost 30 grand more. (probably 20 grand if you don't get a fully loaded one like I did) It aint 30 grand more car. Genesis by a landslide.