Jul.8 (GMM) Sauber has not decided whether or not to run KERS in 2011.

With the car weight limit increasing next year and the weight distribution to be fixed, Force India's chief operating officer Otmar Szafnauer said this week that there is "no other option" than to use the energy recovery technology.

But Germany's Auto Motor und Sport had said that while the bigger teams are all planning to go with KERS, the new teams are almost certainly not.

And the publication said it is not clear if middle of the grid teams like Sauber and Toro Rosso will use KERS next year.

Hinwil based Sauber is still developing the C29, but work has also begun on the team's 2011 car.

But technical director James Key said the KERS decision has not yet been taken. "It is certainly a possibility," he said, "but we are still weighing it up and will decide later on."

Team boss Peter Sauber said recently that Sauber will definitely not be using the system developed and raced in 2009 by former owner BMW because it is "air-cooled with far too many disadvantages".

If Sauber was to opt for KERS in 2011, it is believed the team would buy a Magneti Marelli system for 1 million euros through customer engine supplier Ferrari.

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