IMSA 2019 Detroit
| # | Piloto | Classe | Carro | Motor | Pneus | Equipe | Sponsor | |
|---|---|---|---|---|---|---|---|---|
| 5 |  Joao Barbosa Filipe Albuquerque | DPi | Cadillac DPi | Cadillac | Michelin | Action Express Racing | Mustang Sampling | |
| 6 | Dane Cameron  Juan Pablo Montoya | DPi | Acura DPi | Acura | Michelin | Acura Team Penske | Acura | |
| 7 |  Helio Castroneves Ricky Taylor | DPi | Acura DPi | Acura | Michelin | Acura Team Penske | Acura | |
| 10 |  Renger van der Zande Jordan Taylor | DPi | Cadillac DPi | Cadillac | Michelin | Wayne Taylor Racing | Konica Minolta Business Solutions | |
| 31 | Felipe Nasr Pipo Derani | DPi | Cadillac DPi | Cadillac | Michelin | Action Express Racing | Whelen Engineering | |
| 50 | William Owen Victor Franzoni | DPi | Cadillac DPi | Cadillac | Michelin | Juncos Racing | Juncos Racing | |
| 54 | Jon Bennett Colin Braun | DPi | Nissan DPi | Nissan | Michelin | CORE autosport | ADT / Flexbox | |
| 55 | Jonathan Bomarito  Harry Tincknell | DPi | Mazda DPi | Mazda | Michelin | Mazda Team Joest | Mazda | |
| 77 | Oliver Jarvis Tristan Nunez | DPi | Mazda DPi | Mazda | Michelin | Mazda Team Joest | Mazda | |
| 84 |  Simon Trummer  Stephen Simpson | DPi | Cadillac DPi | Cadillac | Michelin | JDC/Miller Motorsports | Hi-Tide Boat Lifts / Sabelt / Justice Brother | |
| 85 |  Mikhail Goikhberg  Tristan Vautier | DPi | Cadillac DPi | Cadillac | Michelin | JDC/Miller Motorsports | Pixlee / Second Closet /Hi-Tide Boat Lifts / | |
| 8 | Parker Chase Ryan Dalziel | GTD | Audi R8 LMS GT3 | Audi | Michelin | Starworks Motorsports | Vertical Bridge | |
| 12 | Frankie Montecalvo Townsend Bell | GTD | Lexus RC F GT3 | Lexus | Michelin | AIM Vasser Sullivan | ||
| 14 | Richard Heistand Jack Hawksworth | GTD | Lexus RC F GT3 | Lexus | Michelin | AIM Vasser Sullivan | ||
| 44 | John Potter Andy Lally | GTD | Lamborghini Huracan GT3 | Lamborghini | Michelin | Magnus Racing | ||
| 48 | Bryan Sellers Ryan Hardwick | GTD | Lamborghini Huracan GT3 | Lamborghini | Michelin | Paul Miller Racing | 1st Phorm / TOTAL Lubricants / Mountain Motor | |
| 57 | Katherine Legge  Christina Nielsen | GTD | Acura NSX GT3 | Acura | Michelin | Heinricher Racing w/Meyer Shank Racing | Caterpillar / Mobil 1 | |
| 63 | Cooper MacNeil  Toni Vilander | GTD | Ferrari 488 GT3 | Ferrari | Michelin | Scuderia Corsa | WeatherTech | |
| 73 | Patrick Long Zacharie Robichon | GTD | Porsche 911 GT3 R | Porsche | Michelin | Park Place Motorsports | Park Place Porsche | |
| 74 | Gar Robinson Lawson Aschenbach | GTD | Mercedes-AMG | Mercedes-AMG | Michelin | Lone Star Racing | 74 Ranch Resort /ACS Manufacturing | |
| 76 | Paul Holton Matt Plumb | GTD | McLaren 720S GT3 | McLaren | Michelin | Compass Racing | Richard Mille | |
| 86 | Trent Hindman  Mario Farnbacher | GTD | Acura NSX GT3 | Acura | Michelin | Meyer Shank Racing w/ Curb-Agajanian | Autonation / Curb Records | |
| 96 | Bill Auberlen Robby Foley | GTD | BMW M6 GT3 | BMW | Michelin | Turner Motorsport | Turner Motorsport / Hengst Filters |