Porsche Motorsport team director Alexander Hitzinger says the 919 Hybrid is yet to reveal its full potential as the German marque gears up for its much anticipated Le Mans 24 Hours return.

Sixteen years after its last overall victory in the French endurance classic, Porsche have re-entered the premier sportscar arena with the 919 Hybrid, which will go up against the Audi R18 e-tron and Toyota TS040 Hybrid in this year's 82nd running of the Le Mans event.

With a solid, if not spectacular showing in the opening two rounds of the 2014 FIA World Endurance Championship at Silverstone and Spa under its belts, Porsche comes to Le Mans as arguably the outsider of the three manufacturer marques, the car having proven quick over a single lap, but less consistent over a longer distance and more susceptible to reliability problems.

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However, Porsche has made no secret of its intention to put its emphasis into its Le Mans effort, with Hitzinger suggesting it is yet to show its true hand just yet.

"The challenge of developing a car for Le Mans was always to build a fast yet durable car. The constraints of the new race regulations have made this task even more difficult, but fascinating as well. Even in areas that were routine for the competition, we had no experience whatsoever. Nonetheless, we chose the boldest solution for our drive concept, because it offered the best future potential.

"In the pre-testing period, the aerodynamics that were once again modified to achieve lower air drag for the Le Mans event proved themselves, as did advanced developments that enhanced durability. The Porsche 919 Hybrid is our first LMP1 race car design. It is fast - but not all of its potential has been realised yet; that is the reality."