Porsche has maintained its dominance of the Prologue test session at the Paul Ricard circuit after taking top spot on the timesheets for both the morning and afternoon sessions.

In the afternoon session Porsche factory driver Marc Lieb eclipsed his own quickest time in the number 18 Porsche 919 Hybrid, setting a 1m 37.965s lap, a massive 1.3 seconds quicker than his morning effort.

To demonstrate the impressive time of Lieb's lap, it was over three seconds quicker than the top time from last year's Prologue, which was a 1m 41.289s set by Brendon Hartley when the teams were getting to grips with the new Hybrid powertrain regulations.

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Former Formula 1 driver Mark Webber made it a Porsche one-two with his 1m 38.552s lap in the afternoon session, while Audi trailed its German rival by claiming third and fourth place with its R18 e-quattro sister cars.

Benoit Treluyer claimed third with a 1m 39.058s while Loic Duval was fourth with a 1m 39.530s for the Audi team, who opted for shorter running times as it evaluated a number of new parts for its all-new LMP1-H car.

Japanese manufacturer Toyota Racing followed the two German teams as its two cars placed fifth and sixth at the hands of Sebastien Buemi and Stephan Sarrazin respectively. Its two highly-developed TS040 Hybrid cars completed a combined total of 132 laps in the afternoon session.

Another former Formula 1 driver Christian Klien grabbed top spot in the LMP2 category for SARD Morand with a 1m 48.325s fastest lap, with Sam Bird narrowly behind in his G-Drive Racing Ligier-Nissan JSP2 with a 1m 48.687s.

Porsche also claimed the top spot in the GTE-Pro class as Michael Christensen drove quickest with a 1m 58.372s just ahead of team-mate Frederic Makowiecki in the sister factory 911 RSR car.

Patrick Long was quickest in GTE-Am category for Dempsey Racing in its Porsche 911 RSR.

The WEC Prologue test continues this evening with a two-hour night session.