2018 Petit Le Mans

[6] With 299 points, the GTLM Drivers' Championship was led by Antonio García and Jan Magnussen with a nine-point advantage over Ryan Briscoe and Richard Westbrook.

[6] In GTD, the Drivers' Championship was led by Bryan Sellers and Madison Snow with a six-point advantage over Katherine Legge with 297 points.

In GTLM, the Porsche 911 RSR received a 0.7 mm larger air restrictor and got a 15 kilogram weight increase.

[15] In P, Tristan Vautier substituted for João Barbosa, who received injuries from an accident at the previous round in Laguna Seca.

[16] Marino Franchitti substituted for Harry Tincknell in the #55 Mazda Team Joest entry due to a clash with the WEC race at Fuji while Lucas Di Grassi substituted for René Rast in the #77 Mazda Team Joest entry due to a clash with the DTM race at Hockenheimring.

[17] Timo Bernhard and Norman Nato subbed for Oliver Pla and Nicolas Lapierre in the Tequila Patrón ESM entries due to a clash with the WEC race at Fuji.

[21] Chaz Mostert made his IMSA SportsCar Championship debut joining John Edwards and Jesse Krohn in the #24 BMW Team RLL entry.

[24] The first practice session took place at 11:15 am ET on Thursday and ended with Filipe Albuquerque topping the charts for Mustang Sampling Racing, with a lap time of 1:11.878.

[25] The second practice session took place at 3:15 pm ET on Thursday and ended with Colin Braun topping the charts for CORE Autosport, with a lap time of 1:11.669.

[27] The night practice session took place at 7:30 pm ET on Thursday and ended with Norman Nato topping the charts for Tequila Patrón ESM, with a lap time of 1:11.457.

[29] The fourth and final practice session took place at 11:15 am ET on Friday and ended with Oliver Jarvis topping the charts for Mazda Team Joest, with a lap time of 1:10.786.

The competitors' fastest lap times determined the starting order with the grid arranged to put the Prototype and GTLM cars ahead of all GTD entries.

Nick Tandy Frédéric Makowiecki Bill Auberlen Alexander Sims Richard Westbrook Scott Dixon Laurens Vanthoor Mathieu Jaminet Dirk Müller Sébastien Bourdais Jan Magnussen Mike Rockenfeller Miguel Molina Toni Vilander Cooper MacNeil Gunnar Jeannette Álvaro Parente Trent Hindman Madison Snow Corey Lewis Christina Nielsen Robert Renauer Frankie Montecalvo Matteo Cressoni Christopher Mies Daniel Morad Felipe Fraga Maximilian Buhk Ben Keating Luca Stolz Andy Lally Andrew Davis David Heinemeier Hansson Sean Rayhall