Rosberg disappointed to lose upgraded power unit for Italian GP

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Nico Rosberg feels disappointed to have lost his upgraded power unit for this weekend’s Italian Grand Prix after a problem emerged ahead of qualifying on Saturday.

Mercedes spent all seven of its remaining development tokens on upgrading its power unit for the weekend at Monza, giving Rosberg and teammate Lewis Hamilton a boost for the fastest race on the calendar.

Mercedes also looked to lay the foundations for its 2016 power unit by trialling these upgrades and fast-tracking its engine development.

Both Hamilton and Rosberg laid down an impressive pace in Friday’s practice sessions, but Rosberg was forced to switch back to his old power unit after a problem emerged on Saturday morning.

Without the upgrades, the German driver could only qualify fourth on Saturday at Monza, trailing Hamilton and the Ferrari duo of Kimi Raikkonen and Sebastian Vettel.

Speaking to NBCSN after qualifying, Rosberg admitted that he was disappointed, but felt that fast-tracking the development of the power unit was a necessary move with 2016 in mind.

“We learned something and learning is always good and we need to get a head start on next year so I’m sure it was a calculated risk,” Rosberg said.

“Hopefully it’s valuable knowledge. It’s compromised by weekend which is a big disappointment, but for the team, I think it’s been important to do this.”

Rosberg confirmed that Mercedes had found the issue on his new power unit, but that the cause was still to be defined.

“They know what’s happened, but they don’t know why it’s happened, so they need to go back to the factory and analyze that,” Rosberg said.

The Italian Grand Prix is live on NBCSN and Live Extra from 7:30am ET on Sunday.