According to the state-run Herald daily on Wednesday, Mnangagwa said he would accept defeat if he loses to the opposition during the 2018 general elections.
“Indeed, if I lose, I will step down my brother and with grace because the people would have spoken,” he said in response to a question from hundreds of Zimbabweans living in Botswana who attended an interactive dialogue with him in Gaborone on Monday.
He however expressed confidence of romping to victory against a disjointed opposition in the elections to be held around June or July this year.
The comments come in the wake of succession squabbles in the main opposition Movement for Democratic Change whose leader is currently hospitalised in South African where he is receiving cancer treatment.
Mnangagwa invited Zimbabweans living abroad to come and vote in the forthcoming elections.
The country currently does not allow diaspora voting.