Red Bull advisor Helmut Marko has admitted the team's chassis is also to blame for the poor start to the 2015 Formula 1 season.
Dr Helmut Marko claims that the two Mercedes drivers together cannot equal Vettel.
"Vettel probably cost Webber his first victory" - Dr. Helmut Marko
Apparently McLaren's hopes to sigh Red Bull's aerodynamics chief Peter Prodromou may not happen.
Adrian Newey elected to not attend the Japanese Grand Prix in order to work on the 2014 Red Bull Formula One car.