Mercedes upgrades get green light

Michael Schumacher and Nico Rosberg's hopes of a step forward in form from Mercedes have been lifted with their team poised to race its new Coanda-effect exhausts at this weekend's Singapore Grand Prix, AUTOSPORT can reveal. The Brackley-based outfit tested a heavily revised exhaust layout on its W03 during last week's young driver test at Magny-Cours - making use of the concept that has been put to good use by a number of teams this year including Ferrari, McLaren and Sauber. The developments completed more than 1000 kilometres during the three days of testing in the hands of Sam Bird and Brendon Hartley - and team sources suggest the outfit was hugely encouraged by the performance boost they brought to the car.

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