Sudan: President Omar al-Bashir 'to step down in 2020'
Mr Bashir also denied allegations of abuses perpetrated by the Sudanese forces in renewed violence against black African villages who took up arms in the country's western Darfur region.
The president has been indicted by the International Criminal Court (ICC) on counts of genocide and war crimes.
Mr Bashir has been in power since 1989. He won elections in April last year.
He told the BBC's Thomas Fessy that his job was "exhausting" and his current term would be his last.
"In 2020, there will be a new president and I will be an ex-president," he said.
However, sceptics will say that he had already pledged to step down in the past and later went back on his word, our correspondent says.