Genesis G90 by Damian B Oh - CC-BY-SA-4.0 The Genesis G90 has been marketed as the new flagship luxury sedan from Hyundai. With tech integrations, comfortable seats, a spacious cabin, and other perks and amenities, it’s an attractive choice for commuters and small families. The most reliable Genesis G90 year is an especially popular pick. But is it reliable in general? In truth, that depends on the year in which the vehicle was made.