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The Hyundai Genesis coupe has engine issues such as increased oil consumption and oil leaks. It is recommended to replace the coolant every 60,000 miles and the air filter every 15,000 to 30,000 miles. Spark plugs should be changed every 100,000 miles unless they are copper, in which case they should be replaced every 30,000 miles. Engine problems, particularly overheating, can lead to serious issues like car fires and explosions. Other potential problems include loose spark plugs, gaskets needing to be tightened, and oil leaks that require immediate attention.
Certain issues may arise with the 3.8 L V6 engine in a 2016 Hyundai Genesis Coupe, stemming from insufficient lubrication, subpar fuel and air compression, and worn out spark plugs.
My '80s model car with a 1980s '80s 1980s 19 g80 engine unexpectedly seized up, similar to the issues with Sonata engines.