Red Bull could pull the pin on its Formula 1 involvement over the current powertrain regulations, the company's motorsport advisor Dr Helmut Marko has threatened. The Red Bull Racing outfit has again been rendered uncompetitive by its Renault engine package this year, with Daniel Ricciardo struggling to sixth in Sunday's Australian Grand Prix. Team principal Christian Horner called for FIA intervention in the wake of the race, claiming that something needs to be done to bring the dominant Mercedes powerplants back to the field. Mercedes has steamrolled its opposition since the current 1.6 litre hybrid turbo regulations were introduced at the beginning of last year. 'We will evaluate the...
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