• Brazilian Grand Prix

Mercedes likely to ditch Coanda for Brazil

Mercedes has struggled to understand its Coanda-effect exhausts © Sutton Images

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• Race:
• Brazilian Grand Prix

• Drivers:
• Nico Rosberg

• Teams:
• Mercedes

Norbert Haug has revealed that Mercedes is unlikely to run its Coanda-effect exhausts at this weekend's Brazilian Grand Prix.

Mercedes is currently on a run of five races without scoring a point, and ran back-to-back comparisons of its Coanda exhaust system against its previous configuration at the United States Grand Prix last weekend, with Nico Rosberg racing without the latest exhaust.

The teams will get the opportunity to run the 2013 tyres during Friday practice and Haug said that in order to analyse them properly it would be reverting to its older specification, but he confirmed the team will still have Coanda exhausts in 2013.

"We definitely start without [Coanda], we want to do the tyre test without any influence," Haug said. "We have proper data with which we can compare what we had at the start of the year and then we'll probably leave it like that, we will see but ... no Coanda tomorrow.

"Why? Because we think that they still have an influence on heating the tyres, and both the combinations lack aerodynamic downforce which we could not approve compared to the others. So we think that we have a more realistic base to what we have had at the beginning of the season, and we work from there. But it's very clear that you have to have Coanda next year because it gives you a benefit.

Asked if there were any plans to revert to the Coanda exhausts later in the weekend Haug said: "Not currently, no."

Having been the man to run the old exhausts in Austin, Rosberg said that he wasn't concerned about the team's recent lack of results but was only focused on the future.

"I'm not really thinking now about the past," Rosberg said. "What I'm thinking about is that we do the best we can at the moment to prepare ourselves for next year. For sure it's looking better for next year - a lot better - the people are really starting to have an impact; the new people that have joined the team. All the new people - there's been a massive amount of new people - so it will definitely be better."

© ESPN Sports Media Ltd.