The number seven Toyota, which had qualified on pole position, led for most of the night in the hands of Alexander Wurz, Stéphane Sarrazin and Kazuki Nakajima, but it fell victim to an electrical malady in the early hours of Sunday.
Porsche's number 20 car, driven by Timo Bernhard, Brendon Hartley and Mark Webber, traded the lead with the number two Audi on Sunday morning, but shortly after Webber had climbed aboard the 919 Hybrid, an engine problem forced him to bring the car back into the pits, where it was retired.
That left the number two Audi in the lead ahead of the number one car. The latter car's performance was remarkable considering the car had to be completely rebuilt after Loïc Duval had an enormous accident at the Porsche Curves in practice. Duval was ruled unfit to start by Le Mans officials, and Gené was drafted in to substitute for him.
The number 14 Porsche of Romain Dumas, Neel Jani and Marc Lieb finished the race in 11th position, having been delayed by fuel flow problems in the early stages of the event and further mechanical issues in the closing stages of the event.
Victory in the LMP2 category went to the Jota Sport Zytek-Nissan of Simon Dolan, Harry Tincknell and Oliver Turvey.
Ferrari won the GTE Pro class, with the AF Corse entry of Gianmaria Bruni, Giancarlo Fisichella and Toni Vilander taking the spoils in their 458 Italia.
GTE Am fell to Aston Martin. The factory-entered car of David Heinemeier Hansson, Kristian Poulsen and Nicki Thiim was first home in their Vantage V8.
Follow the links below for Autocar's 2014 Le Mans 24 Hours blogs:
Le Mans blog - the loneliness of the long-distance racing driver
Le Mans blog - an unexpected introduction to the Porsche Carrera Cup
Le Mans blog - Porsche and Toyota might be quick, but will they last?
Le Mans blog - Audi might have more than just experience going for it
Le Mans blog - Nissan's trail-blazing ZEOD RC and its all-electric lap
Le Mans blog - seven hours in the saddle of a new Audi A3 saloon