Vettel was furious after clipping Narain Karthikeyan’s HRT as he lapped him, shredding his left rear tyre late on and forcing the German to pit, costing him fourth place at Sepang.
“Like on normal roads, you have some idiots driving around. It seems there is also one driving here,” said Vettel after the race.
But HRT driver Karthikeyan told the Hindustan Times: “For a world champion to say things like that is really shameful.
“It is really unprofessional. For a driver who has achieved so much to take out his frustrations on me just because he is having a difficult year is really sad.
“One does not expect a professional sportsman to be such a cry baby.”
MORE: The latest football news
MORE: The latest tennis news
BIOGRAPHY: Nabil Fekir