– Rob White reflects on the season opening 2014 F1 test at Jerez, where the Renault-powered cars spent most of the time in the garage... We have seen very little running from the Renault-engined teams. What have the issues been? We have not run enough laps, and when we have they have not been run at an acceptable performance level. The underlying causes are not straightforward: there isn’t a single component or system that has caused particular trouble. A number of related things have been troublesome, principally concerning the control and operation of the various sub-systems of the Power Unit within the car. For example on the first run day, we had problems with a sub-system...
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