Sauber: Double DRS too expensive

Sauber is almost certain not to pursue the double-DRS concept pioneered by Mercedes, because of the high costs involved in fitting it to the car. With the Mercedes design, which helps stall the front wing for improved balance and an extra speed boost in qualifying, having been given the all-clear by the FIA, rival teams have been working out if they need to add it to their own cars too. But the relatively limited benefit - believed to be just a few tenths of a second per lap in qualifying ? against the high costs of fitting internal piping means that only the big-money teams are likely to pursue it fully.

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