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Rosberg wary of engine power deficit in Abu Dhabi

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Nico Rosberg is anticipating a tough weekend in Abu Dhabi due to a deficit in engine power caused by the high mileage on his current unit.

Rosberg and the Mercedes team have managed to avoid any engine-related grid penalties in 2015 by keeping within the limit of four power units per season.

By doing so, Mercedes has been forced into extending the milage of its engines, with a failure for Rosberg at the Italian Grand Prix in September having a knock-on effect at the end of the season.

Rosberg therefore arrives in Abu Dhabi with an engine down on power that makes him wary of his chances despite leading practice on Friday.

“It’s been a good start here in Abu Dhabi, but it will be a tough weekend for me as I have quite a high mileage engine in my car,” Rosberg said.

“After the Monza problem, we have had to stretch the engine life more than we had planned over the 19 races, so I definitely have a small lack of power on the straights and therefore need to make up extra time in the corners.

“It will be a big battle with Lewis here. He didn’t really bring together his quick laps, so it will be even closer tomorrow I’m sure. I’m looking forward to it and I definitely want to win this race and give the boys in the garage a reason to celebrate at the end of the season.”

On the other side of the Mercedes garage, world champion Lewis Hamilton was left unhappy with Mercedes’ long-run pace in practice, believing that there is ground to be made up.

“The long run pace doesn’t feel quite as strong so that’s something I need to work on,” Hamilton said. “I’ll probably make some more tweaks tonight and hopefully tomorrow it will be better.

“It’s very hard to overtake here, so of course it’s better to be up on pole. But that doesn’t mean it’s impossible to win from further back.”

Alex Palou fastest as several go off course during IndyCar practice at IMS

IndyCar Harvest GP practice
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Alex Palou paced the opening practice Thursday for the IndyCar Harvest GP at the Indianapolis Motor Speedway road course.

The Dale Coyne Racing rookie turned a 1-minute, 10.177-second lap around the 2.439-mile, 14-turn road course in his No. 55 Dallara-Honda.

Jack Harvey was second, followed by Colton Herta, points leader Scott Dixon and Max Chilton.

PRACTICE CHART: Click here to see the speed rundown from Thursday’s session

FRIDAY AT IMS: Details for watching Race 1 of the Harvest GP

Qualifying for Friday’s race will be at 6:20 p.m. ET Thursday on NBC Sports Gold.

Will Power, who won the pole position for the July 4 race at the track, spun off course with just more than a minute left in the session after the left rear of his No. 12 Dallara-Chevrolet made slight contact with the right front of Alexander Rossi’s No. 28 Dallara-Honda.

Power was among several drivers who went off track, but there were no damaged cars during the session. Marcus Ericsson missed the final 5 minutes of the practice after being penalized for causing a red flag with a Turn 8 spin.

Arrow McLaren SP drivers Pato O’Ward and Helio Castroneves, who is driving for Oliver Askew (who is recovering from concussion-like symptoms), also veered off course as did rookie Rinus VeeKay and Santino Ferrucci.

Seven-time NASCAR Cup Series champion Jimmie Johnson was in attendance at the session before racing Sunday at Talladega Superspeedway. Johnson will be driving a partial schedule of road and street courses in IndyCar next season for Chip Ganassi Racing.

“Literally, the smallest of details, I can pick up on,” Johnson told NBC Sports pit reporter Kevin Lee. “It’s been really nice today just to see how a session starts and obviously to jump on the radio and listen to how the systems work and then obviously you get into the car and the setup and such. I’m at ground zero right now, a 45-year-old rookie trying to learn my way into a new sport essentially.”

Johnson told Lee his sponsorship hunt to run a Ganassi car “has gone really well. The fact that I’m here today and ingrained so deeply in the team is a great sign of where things are going. Looking forward to getting behind the wheel of a car soon and hopefully having some announcements for the world to see soon, too.”

Fans were in attendance Thursday for the first time this season at IMS, which is allowed a limited crowd of 10,000 for its races this weekend.