CARS.COM — The Genesis G90 is designed to be a big, comfortable luxury car — and it does that very well. While it has its faults, that comfort goes a long way toward making up for the G90’s shortcomings. Why is it so comfortable? A big part of it is its new twin-turbocharged 3.3-liter V-6. It makes about 365 horsepower, but what’s really important is how it feels.