F1: Vettel to take grid penalty in Austin after engine change

Aston Martin use the same engines as champion Mercedes, whose seven-times world champion Lewis Hamilton took a 10-place grid drop for the same reason at the previous race in Turkey.

Aston Martin's Sebastian Vettel will take a grid penalty at the US Grand Prix after exceeding his engine allocation for the season.

Aston Martin's Sebastian Vettel will take a grid penalty at the US Grand Prix after exceeding his engine allocation for the season.

The four-times Formula One world champion, a winner at Austin's Circuit of the Americas with Red Bull in 2013, has been struggling to score points recently with only one top-10 result in the last nine races.

"I think we are heading into, let’s say, a difficult weekend," the German told reporters. "We are changing the engine and therefore we will have a penalty.

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"We will see what we can do from where we start, and nevertheless, looking forward I think we can be strong here. How strong? We will see."

Drivers are allowed three engines to last the season and any more than that triggers a grid drop. How many places depends on how many components of the power unit are changed.

Aston Martin use the same engines as champion Mercedes, whose seven-times world champion Lewis Hamilton took a 10-place grid drop for the same reason at the previous race in Turkey.

The Circuit of the Americas offers at least plenty of overtaking opportunities.

"I think it's a good place to do it (take the penalty) and hopefully we'll have an entertaining Sunday afternoon and get back in the mix," said Vettel.