– Renault has pushed back the introduction of an upgraded Formula 1 engine, as it works to ensure reliability, Managing Director Cyril Abiteboul has explained.Renault had planned to introduce a sizeable power unit upgrade at June's Canadian Grand Prix, in a bid to close the gap to current pace-setters Mercedes and Ferrari.However, amid concerns over reliability, as dyno testing continues, Renault has now stated that it wants to introduce its developments by the end of July."We want to do that before the summer break," Abiteboul told Autosport."We want to keep it in sync with the power unit integration, and we want to do that with power unit number three [of the season]...
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