Daniel Ricciardo disqualified from Australian Grand Prix
Red Bull's Daniel Ricciardo has been excluded from the Australian Grand Prix after breaching fuel consumption rules.
The Australian, 24, crossed the line second, [Only registered and activated users can see links. ] of Mercedes in Melbourne.
The sport's governing body, the FIA, has installed a fuel-flow sensor in each car to ensure teams do not exceed the maximum fuel-flow rate of 100kg/h.
Stewards said Ricciardo's car exceeded the rate "consistently". Red Bull say they will appeal.
McLaren's Kevin Magnussen has been promoted to second with his team-mate Jenson Button moving up to third.
But Red Bull boss Christian Horner insisted the team had complied with the regulations, adding that the fuel sensors have caused problems since their introduction.
"I'm extremely disappointed, quite surprised and we will of course appeal," said Horner.
"Hopefully through the appeal process, it will be clear the car has conformed at all times with the regulations and we have complied with technical regulations.
"We could see a significant discrepancy with what the sensor was reading and what our fuel flow was stated as - that's where there's a difference of opinion.
"These fuel-flow sensors, which have been fitted by the FIA to measure fuel, have proved problematic.
"Since their introduction, there have been discrepancies and the sensors have been unreliable."
Horner said they had an issue with the sensor "through Friday practice" and were given a replacement that "failed during qualifying".
"We were asked to put the one we used on Friday back on the car and apply an offset," he said.
"We could see a significant discrepancy with what the sensor was reading and what our fuel flow was stated as. We didn't feel it was correct."
Ricciardo's podium would have been the first of his career and came on his debut with Red Bull.
The Australian replaced Mark Webber following promotion from the outfit's junior team Toro Rosso.
The sport has introduced a host of new rules this season, including a limit of no more than 100kg for a race distance and a maximum fuel-flow rate.
Teams were warned before the race that violations would lead to disqualifications.
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Race result in spoiler
Australian GP: Rosberg wins after Lewis Hamilton and Vettel retire
By Andrew BensonChief F1 writer in Melbourne
Nico Rosberg delivered on Mercedes' promise with a[Only registered and activated users can see links. ] as Lewis Hamilton retired on lap three.
Red Bull's Daniel Ricciardo was second, but was later [Only registered and activated users can see links. ]
The decision promoted Dane Kevin Magnussen, who made a stellar debut for McLaren, to second.
He beat team-mate [Only registered and activated users can see links. ] from Williams' Valtteri Bottas.
Polesitter Hamilton had a cylinder failing to fire from the very start of the race, and was down to fourth behind Rosberg and Ricciardo by the first corner.
The 2008 world champion dropped to fifth by the end of the first lap and was called into the pits shortly afterwards.
World champion Sebastian Vettel also hit early power-unit trouble in his Red Bull, retiring a lap later than Hamilton with an engine failure.
Eight cars failed to finish as F1 started a new era with high-tech turbo hybrid engines and a limit of no more than 100kg of fuel for a race distance.
Hamilton's retirement left Rosberg unopposed out front and the German drove a controlled race in what is clearly a dominant car to lead until the end.
"It's been an amazing day," said Rosberg. "I'm over the moon really, everyone has worked so hard over the winter and to have such an amazing Silver Arrow. I'm really thankful to Mercedes for giving me such an amazing car.
"There is a lot of work to do. We can still improve a lot and we must because the competitors are not going to be asleep."
Behind him, Ricciardo was able to complete a race distance in a Red Bull for the first time since the car appeared at the end of January.
The team had previously not managed to do more than about 20 laps in a row in pre-season testing.
Speaking before his disqualification, Ricciardo said: "Two or three weeks ago I would have bet pretty much everything I had that we would not be standing up there."
The Australian was in a comfortable second place for most of the race but came under pressure from Magnussen in the final 20 laps.
Magnussen was within a second of the Red Bull with five laps to go but Ricciardo was able to hold on to the end. Ricciardo was eventually disqualified around six hours after the end of the race.
Behind them, Button was unable to close on Magnussen, but beat Alonso by jumping ahead of the Ferrari at their final pit stops.
"It's hard to believe," said Magnussen. "It seems so surreal. The car was so much better than it has been at any point. I just had exactly what I needed the whole race. The preparation we have done this winter has been fantastic."
Williams' Valtteri Bottas was fifth after an incident-packed race in which he hit the wall on the exit of Turn 10 and broke a wheel, triggering a safety car period.
The Finn dropped back to 16th place but used the pace of the Williams to fight back up the field.
Force India's Nico Hulkenberg ran fourth in the early stages after jumping up from seventh on the grid and passing Alonso on the first lap.
But the German slipped back to finish sixth ahead of the second Ferrari of Kimi Raikkonen.
The Toro Rossos of Jean-Eric Vergne and rookie Daniil Kvyat took eight and ninth places. The Russian replaces Vettel as the youngest points scorer in F1 history.
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