Red Bull Racing will introduce a 'revamped' chassis at May's Spanish Grand Prix having acknowledged that they did not deliver with the RB13. Despite hoping that this year's new aerodynamic regulations would allow them to close the gap to Mercedes, Red Bull have instead fallen behind Ferrari as well. The Milton Keynes' squad has yet to join their main rivals on the top step of the podium while Ferrari have two wins and Mercedes, one. And while in the past Red Bull's main problems related to their Renault engine, Marko admits the chassis is also lacking. Speaking to the official F1 website, Marko said: 'At the first test we were pretty optimistic that the three teams were pretty even, but...
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