racing very exciting. 2005 saw the series expand to a five race format with the addition of the Istanbul Racing Circuit. In 2007, the Le Mans Series held its first and single overseas race in the continent of South America with Mil Milhas Brasil as the sixth round. In 2010, the Formula Le Mans Cup was integrated into the Le Mans Series, running alongside Le Mans Prototype cars and GT cars. As the FIA World Endurance Championship was reestablished in 2012, the ELMS had a reduced car count including officially dropping the LMP1 Prototype class from the category and its calendar was reduced to three rounds in Paul Ricard, Donington Park and Road Atlanta (Petit Le Mans). For 2013, a twenty-nine car field was announced, with eleven in the LMP2 class, ten in the LM GTE class, and five in the new GTC class, which used GT3 technical rules. The calendar featured five races with a duration of 3 hours. In 2014, the LMPC class was dropped and all races were expanded to 4 hours. The 2015 season saw the introduction of the new LMP3 prototype class with cars built from Ligier, Ginetta, ADESS & Norma. Each of these cars chassis are powered by 5.0L Nissan V8 naturally aspirated engines (VK50VE) In 2016, the GTC class was dropped from the series and moved to a new support series, the GT3 Le Mans Cup. This tournament was held on the same weekends as the European Le Mans Series 4-hour events, as well as on the same week as the 24 Hours of Le Mans, with shorter races than the ELMS. In 2017, it was established by ACO that the lower teams from LMP3 would drop to the year's Michelin Le Mans Cup, while the best LMP3 teams from this competition would be promoted to ELMS. During this year's season new ACO LMP2 Prototype Class regulations were introduced with licensed manufacturers such as Dallara, Onroak Automotive (Ligier), Oreca and the joint-venture Riley Tech/Multimatic with Gibson Technology being the exclusive engine supplier. In 2020, with the season heavily impacted by the COVID-19 pandemic, the 4 Hours of Silverstone race would be dropped from the calendar due to a date not being able to be found. The 4 Hours of Barcelona would also be replaced by a second 4 Hours of Le Castellet race at Circuit Paul Ricard. New ACO Generation II LMP3 ruleset