No further action will be taken against Lewis Hamilton or Nico Rosberg over their collision on the opening lap of the Spanish Grand Prix, it has been confirmed.

The pair came together at turn four after Rosberg's attempts to defend from Hamilton saw the defending champion forced onto the grass, where he lost control and collected his team-mate at the apex of the corner.

Forcing both out on the spot, with Mercedes choosing not to point the finger of blame at either driver, the steward subsequently agreed and opted not to punish, pointing to the 'wrong power mode' that saw Rosberg exit turn three slower than expected being the primary factor at play.

"The incident concerned started when Car 6 dropped into an incorrect power mode, as set by the driver prior to the start," read the official stewards decision from the FIA. "This created a significant power differential between Car 6 and Car 44 at the exit of Turn 3 coming onto the straight, resulting as much as a 17kph speed difference between the two cars on the straight. Car 6 moved to the right to defend his position, as is his right under Article 27.7 of the Sporting Regulations.

"Simultaneously Car 44 as the significantly faster car with, at that time, apparent space on the inside, moved to make the pass. Article 27.7 requires the leading driver to leave room, if there is a "significant portion" of the car attempting to pass alongside. Car 44 had a portion of his front wing inside Car 6 small fractions of a second prior to Car 44 having to leave the right side of the track to avoid an initial collision, which may have led him to believe he had the right to space on the right. Once on the grass on the side of the track Car 44 was no longer in control of the situation.

"Having heard extensively from both drivers and from the team, the Stewards determined that Car 6 had the right to make the manoeuvre that he did and that Car 44's attempt to overtake was reasonable, and that the convergence of events led neither driver to be wholly or predominantly at fault, and therefore take no further action."

The favourable outcome will be a relief to both drivers and for Mercedes with the prospect of a grid penalty for the next Monaco Grand Prix probable had one been punished. A reprimand for Hamilton would have also been enough to leave him with a ten-place grid penalty having already acquired two reprimands in previous races.