The accident took place in a tourist area near the river Danube close to Kismaros, around 55 kilometres (34 miles) north of the capital Budapest, according to a police statement.
"All three victims were South Korean," a police spokesperson Bianka Berki Szabone told AFP without confirming if they were tourists.
According to Hungarian media the car went through a stop signal at a rail-crossing where it was hit by an express train travelling from Warsaw to Budapest.
No-one on the train was injured, said police.
The deaths come almost three months after 25 South Korean tourists died in a boat accident on the Danube in Budapest.
Police are still searching for another South Korean tourist missing since the tragedy.
The victims drowned after their small sightseeing boat collided with a larger vessel and capsized.(AFP) RUP
Disclaimer :- This story has not been edited by Outlook staff and is auto-generated from news agency feeds. Source: PTI