| No. | Class | Team | Drivers | Car | Engine | Tyres | Fuel | |
|---|---|---|---|---|---|---|---|---|
| 1 | 0 | P | DeltaWing Racing | Memo Rojas Katherine Legge | DeltaWing DWC13 | Elan | C | E10 |
| 2 | 5 | P | Action Express Racing | João Barbosa Christian Fittipaldi | Corvette DP | Chevrolet | C | E10 |
| 3 | 7 | P | Starworks Motorsport | TBA | Riley DP | BMW Power | C | E10 |
| 4 | 10 | P | Wayne Taylor Racing | Jordan Taylor Ricky Taylor | Corvette DP | Chevrolet | C | E10 |
| 5 | 31 | P | Action Express Racing | Eric Curran Dane Cameron | Corvette DP | Chevrolet | C | E10 |
| 6 | 60 | P | Michael Shank Racing | John Pew Ozz Negri Jr | Ligier JS PS2 | Honda HPD | C | E10 |
| 7 | 70 | P | SpeedSource | Jonathan Bomarito Tristan Nunez | Mazda | Mazda | C | D |
| 8 | 90 | P | VisitFlorida.com Racing | Richard Westbrook Michael Valiante | Corvette DP | Chevrolet | C | E10 |
| 9 | 01 | P | Chip Ganassi Racing with Felix Sabates | Joey Hand Scott Pruett | Riley DP | Ford EcoBoost | C | E10 |
| 10 | 07 | P | SpeedSource | Joel Miller Tom Long Sylvain Tremblay | Mazda | Mazda | C | D |
| 11 | 8 | PC | Starworks Motorsport | TBA Renger van der Zande Mike Hedlund | ORECA FLM09 | Chevrolet | C | E10 |
| 12 | 11 | PC | RSR Racing | Chris Cumming Bruno Junqueira | ORECA FLM09 | Chevrolet | C | E10 |
| 13 | 16 | PC | BAR1 Motorsports | John Falb Todd Slusher | ORECA FLM09 | Chevrolet | C | E10 |
| 14 | 38 | PC | Performance Tech Motorsports | James French Conor Daly | ORECA FLM09 | Chevrolet | C | E10 |
| 15 | 52 | PC | PR1/Mathiasen Motorsports | Mike Guasch Tom Kimber-Smith | ORECA FLM09 | Chevrolet | C | E10 |
| 16 | 54 | PC | CORE autosport | Jon Bennett Colin Braun | ORECA FLM09 | Chevrolet | C | E10 |
| 17 | 61 | PC | BAR1 Motorsports | Don Yount Ryan Lewis | ORECA FLM09 | Chevrolet | C | |
| 18 | 85 | PC | JDC/Miller Motorsports | Mikhail Goikhberg Matt McMurry | ORECA FLM09 | Chevrolet | C | E10 |
| 19 | 88 | PC | Starworks | Alex Popow Mike Hedlund | ORECA FLM09 | Chevrolet | C | |
| 20 | 3 | GTLM | Corvette Racing | Jan Magnussen Antonio Garcia | Chevrolet Corvette C7.R | Chevrolet | M | E85C |
| 21 | 4 | GTLM | Corvette Racing | Oliver Gavin Tommy Milner | Chevrolet Corvette C7.R | Chevrolet | M | E85C |
| 22 | 17 | GTLM | Team Falken Tire | Wolf Henzler Bryan Sellers | Porsche 911 RSR | Porsche | F | E85C |
| 23 | 24 | GTLM | BMW Team RLL | John Edwards Lucas Luhr | BMW Z4 GTE | BMW | M | E85C |
| 24 | 25 | GTLM | BMW Team RLL | Bill Auberlen Dirk Werner | BMW Z4 GTE | BMW | M | E85C |
| 25 | 62 | GTLM | Risi Competizione | Pierre Kaffer Giancarlo Fisichella | Ferrari F458 Italia | Ferrari | M | E85C |
| 26 | 911 | GTLM | Porsche North America | Nick Tandy Patrick Pilet | Porsche 911 RSR | Porsche | M | E85C |
| 27 | 912 | GTLM | Porsche North America | Jörg Bergmeister Earl Bamber | Porsche 911 RSR | Porsche | M | E85C |
| 28 | 22 | GTD | Alex Job Racing | Cooper MacNeill Leh Keen | Porsche 911 GT America | Porsche | C | E10 |
| 29 | 23 | GTD | Team Seattle/Alex Job Racing | Ian James Mario Farnbacher | Porsche 911 GT America | Porsche | C | E10 |
| 30 | 33 | GTD | Riley Motorsports | Ben Keating Jeroen Bleekemolen | Dodge Viper SRT | Viper V10 | C | E10 |
| 31 | 44 | GTD | Magnus Racing | John Potter Andy Lally | Porsche 911 GT America | Porsche | C | E10 |
| 32 | 45 | GTD | Flying Lizard Motorsports | Mike Vess Jason Hart | Audi R8 LMS | Audi | C | E10 |
| 33 | 48 | GTD | Paul Miller Racing | Christopher Haase Dion von Moltke | Audi R8 LMS | Audi | C | E10 |
| 34 | 58 | GTD | Wright Motorsports | TBA | Porsche 911 GT America | Porsche | C | E10 |
| 35 | 63 | GTD | Scuderia Corsa | Bill Sweedler Townsend Bell | Ferrari 458 Italia | Ferrari | C | E10 |
| 36 | 73 | GTD | Park Place Motorsports | Patrick Lindsey Spencer Pumpelly | Porsche 911 GT America | Porsche | C | E10 |
| 37 | 76 | GTD | Compass360 Racing | Ray Mason Pierre Kleinubing | Audi R8 LMS | Audi | C | |
| 38 | 80 | GTD | Riley Motorsports | Dan Knox Marc Goossens | Dodge Viper SRT | Viper V10 | ||
| 39 | 97 | GTD | Turner Motorsport | Michael Marsal Markus Palttala Boris Said | BMW Z4 | BMW | C | E10 |
| 40 | 007 | GTD | TRG-AMR | Christina Nielsen Kumo Wittmer | Aston Martin V12 Vantage | Aston Martin | C | E10 |
