Pakatan Harapan will introduce new policies to limit the powers of the prime minister, said the coalition's chairperson Dr Mahathir Mohamad.

Mahathir, who was once prime minister for five terms, said Harapan was looking into introducing term limits, among others.

He said this at a forum this afternoon when was asked on mechanisms Harapan would put in place to keep a new prime minister in check.

Without missing a beat, Mahathir said that Harapan's manifesto will include pledges to limit the powers of the prime minister in order to ensure separation of powers between the legislative, executive and judiciary.