@rockedin123: Almost certainly. The question is how far behind they are.
A few mistakes from Hamilton as he slides the car through one corner and then runs deep at Turn 10.
@fawx: A few little aero tweaks and winglets on the floor and rear of the car.
Rosberg makes a very late entry to the pit lane and goes the wrong way around the bollard at pit entry. That may result in a slap on the wrist, but no damage was done to either the Mercedes or any other competitors (or the bollard, I should add)
Raikkonen: "The seat is getting very hot in this car"
Hamilton had a similar problem earlier this year, which turned out to be the electronics for the FOM camera. The team repackaged it and seem to have solved the problem.
@timot: Until its winning the team won't be happy and even then they'd need to push the boundaries to stay ahead. That's what F1 is all about.
I should note that Rosberg improved to a 1:26.828 to go 0.070s quicker than Hamilton.
The stewards are investigating Rosberg for going the wrong side of the bollard marking the pit entry.
Mercedes is poking around at the back of Rosberg's car. He was hoping for a perfect weekend here, let's hope that a spanner isn't thrown in the works.
@vic: They have definitely boosted horsepower. The best way to measure bhp is to look at acceleration out of corners using GPS tracking rather than top speed, which is still largely dictated by drag.
@FouadHabibi: If he uses another internal combustion engine he will get a 10-place penalty this weekend.
@Marais: I should imagine the most the stewards will issue would be a reprimand, which can result in a penalty if too many are accrued but won't mean any tangible penalty this weekend.
@Romain: Nearly a second between Rosberg's best time and Vettel's and just over a second between Rosberg and Raikkonen.
Vettel is 0.978s off and Raikkonen 1.004s to be precise.
Hamilton runs a little wide in the final sector on his latest lap.
@JJA: McLaren will realistically be aiming to make Q2 in qualifying and score points in the race. From what the team has been saying this weekend won't be a dramatic step up, rather another step along the way.
@Donovan: Internal Combustion Engine - the old fire and brimstone part of the power unit. We differentiate it now because power is also supplied by two types of energy recover system in the Motor Generator Unit - Kinetic (harvesting power under braking from the rear axle) and the Motor Generator Unit - Heat (harvesting power from the exhaust gases via the turbo's turbine)
@jsa: Most likely the packaging of components and the stresses it puts them under.
Just over two minutes left in this session now. Rosberg remains fastest on a 1:26.828
Ricciardo has made it out and is currently 11th fastest and on a quicker lap.
Button: "The balance is all wrong on this wing"
Raikkonen returns to the pits to find that there are no Ferrari mechanics to take his car into the garage. He heads back out as a result.
The session comes to an end with Rosberg's time secure at the top of the standings.
Wahey! Alonso boots the throttle in Turn 12 and pirouettes the McLaren through 360 degrees.
@Heartmuscle: It looked a bit that way. Sadly it's more likely a sign that Honda's driveability upgrades haven't done the trick.
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