The DOHC MPI Lambda engine in the 2012 Hyundai Genesis Coupe is known to sometimes consume more oil than expected, which can lead to low oil levels if not monitored regularly.

Some owners have reported problems with the timing chain tensioner, which can cause a rattling noise and potentially lead to more serious engine damage if not addressed.

The fuel injectors can become clogged or fail, leading to poor engine performance, misfires, and decreased fuel efficiency.

There have been instances of coolant leaks from various components of the cooling system, which can lead to engine overheating if not repaired.

Due to the direct injection system, carbon build-up on the intake valves is a common issue, potentially causing rough idling, reduced performance, and increased emissions.

Some drivers have reported engine knocking or pinging, which could be related to issues with the fuel quality, ignition timing, or engine components.

The DOHC MPI Lambda engine in the 2012 Hyundai Genesis Coupe is known to sometimes consume more oil than expected, which can lead to low oil levels if not monitored regularly.

Some owners have reported problems with the timing chain tensioner, which can cause a rattling noise and potentially lead to more serious engine damage if not addressed.

The fuel injectors can become clogged or fail, leading to poor engine performance, misfires, and decreased fuel efficiency.

There have been instances of coolant leaks from various components of the cooling system, which can lead to engine overheating if not repaired.

Due to the direct injection system, carbon build-up on the intake valves is a common issue, potentially causing rough idling, reduced performance, and increased emissions.

Some drivers have reported engine knocking or pinging, which could be related to issues with the fuel quality, ignition timing, or engine components.