Ukrainian President Petro Poroshenko has thanked Japan's visiting prime minister for promising $1.5 billion in credit guarantees to aid the country's efforts at reform and redevelopment.

Shinzo Abe was visiting the country on Saturday en route to the G-7 summit in Germany. Among his round of ceremonies was one where he announced the donation 1,500 hybrid automobiles to Ukraine's police.

"I feel that that Ukrainian government is fully determined and prepared to steadfastly move on the path of reform," the Japanese leader said.

Poroshenko said the credit guarantees will be used for an array of reform and development projects.

He also said Japan has agreed to a soft loan of $1.1 billion for rehabilitation of Kiev's sewage treatment plant.