 Our 2012 Sonata with regular maintenance records experienced a sudden catastrophic engine failure at 74,000 miles.  No warning lights have ever come on in the car but it suddenly began to lose power and make a terrible noise. Since it was still under warranty, we had it towed to our dealer who told us that the engine had to be replaced and it was covered and the engine would be replaced within a few days.  Subsequently, Hyundai changed their mind and chose not to honor their warranty stating "customer neglect".  We provided all our service records showing oil changes basically every 4 months but they still said it was our fault.  We have since found out that this is happening all over the country to cars with the 2.4 liter Theta II GDI engine.   Edmonds should research this because this is a widespread problem.  I would not buy another Hyundai because they do not honor their warranty.Update:  After the NTSB got involved, Hyundai recalled all these engines and mine was finally replaced 4 months after it failed.  I received some of the money back that this failure cost me but was not reimbursed for the time I couldn't use my car and had to still insure it and drive a car with a lot less fuel mileage.