The problem can get very, VERY bad.
If you want a cheap, reliable sports car, the Hyundai Genesis Coupe is one of the best bets around. It ranges in price from $25,000 to $33,000, with that money buying you a 2.0-liter turbocharged inline-four-cylinder engine to start and topping out at a 3.8-liter V6. That's pretty decent power for such an affordable car. It all sounds good but unfortunately, the coupe now has a bit of a problem. Genesis Coupes from 2013 to 2015 with manual transmissions have been recalled because of an issue with the differential.
Improper alignment of the differential and rear suspension crossmember can cause the differential bolts to loosen, which can disconnect the driveshaft. There are no reports of any crashes or injuries yet but around 10,800 cars have been affected. Luckily, Hyundai will inspect and fix all the proper parts for free. Well, at least it's not as bad as the recent Dodge Dart recall. Almost FIVE times as many Darts have been recalled as Genesis Coupes which is ridiculous because the Dodge Dart is not that bad of a car. It''s less expensive than the Hyundai but it also offers a manual gearbox and can seat five in comfort. Anyways, drive safe Genesis and Dart owners. Actually, Genesis owners, get your asses over to a dealer service center ASAP!