"The success of Prime Minister Najib Tun Razak's working visit to Germany this week proved wrong Dr Mahathir Mohamad's false claims that Malaysia is failing," said the Barisan Nasional Strategic Communications Director in a statement on Thursday.
Abdul Rahman said that Dr Mahathir had "reached a new low" by comparing Najib and others in the Government to Nazis while the Prime Minister was in Germany.
"Germany has atoned for its past and built a democracy that is an example to many others. It is wrong to run down a country and dredge up its painful history just for the sake of selfish political point scoring," Abdul Rahman said, adding that Dr Mahathir's remarks are destroying his legacy as a former prime minister.
Najib started his three-day official visit to Germany on Monday.