<text>  Sebastian Vettel has knocked back an invitation from Nico Rosberg to visit the Mercedes garage this weekend, fearing a PR stunt. Ferrari star Vettel and Mercedes ace Nico Rosberg became involved in a spat during the post-Australian Grand Prix press conference. It resulted in Vettel suggesting Mercedes should open up their garage at the Sepang International Circuit for an inspection of their cars in the wake of a dominant display at Melbournes Albert Park. Sebastian Vettel, speaking ahead of the Malaysian Grand Prix, has snubbed an invite from Nico Rosberg . Vettel branded Rosbergs invitation to visit the Mercedes garage in Malaysia as staged and a PR stunt Rosberg then invited Vettel, with the latter suggesting the debrief in the engineers room for his visit. Now, however, such a plan has been knocked down as Vettel said: When I was joking with Nico in the press conference the deal was the invite was for all the paddock. Now it seems the invite has shrunk to just me. Initially I think it was called off by Niki Lauda, Mercedes non-executive director and Toto Wolff, Mercedes motorsport boss. Rosberg finished second behind race-winner Lewis Hamilton at the season-opening Australian Grand Prix . Now theyve told Rosberg yes, so I think they are using it as a bit more of a PR thing rather than a proper invite, so the answer is no I wont be going. Asked as to whether it was his decision or that of Ferrari, he said: It wasnt really discussed to be honest. Initially it was called off and then I think they tried to use it as Ah yeah, we are so friendly and open to everyone. Even if I went there, do you think they would really open up? That means I wont go, because even if I go its all staged. 