IMSA Prototype Challenge (formerly IMSA Prototype Lites) was a racing series featuring two classes of single-seat prototype cars racing simultaneously. The series was sanctioned by the International Motor Sports Association (IMSA). Most races were held in support of the WeatherTech SportsCar Championship. The series raced LMP3 class prototype sportscars. The cars have grown in size and speed since its 2006 introduction, starting from four-cylinder and motorcycle powered race cars to large V8 powered cars. Each race was 1 hour and 45 minutes long apart from the season opening 3 hour race at Daytona International Speedway.

The series' final season was in 2022. For 2023, the series was replaced with the IMSA VP Racing SportsCar Challenge.

Car Specifications

LMP3 Class

Minimum weight930 kilograms (2,050 lb)
Maximum length4,650 millimetres (183 in)
Maximum width1,900 millimetres (75 in)
EngineNaturally aspirated Nissan V8 5.6L
Fuel tank size85 litres (22 US gal)
Maximum wheel diameter28 inches (710 mm)
Maximum wheel width13 inches (330 mm)

Former classes

MPC Class

L2 Class

L2 Class 2006-2012 only

L3 Class 2006-2009 only, class discontinued for 2010

Champions

SeasonClassDriver ChampionMasters ChampionTeam Champion
2006L1United States Adam Pecorarin/aUnited States Cape Motorsports
L2United States Dan McBreenn/aPVM Racing
L3United States Robert Mummn/an/a
2007L1Puerto Rico Gerardo Bonillan/aUnited States B-K Motorsports
L2United States Robby Cardn/aPVM Racing
L3United States Richard Spicern/aUnited States Spicer-Hagerman
2008L1United States Jonathan GoringUnited States Jon BrownsonUnited States Comprent Motorsports
L2Australia Tom DrewerUnited States Eric VassianUnited States WEST Racing
L3United States Chris FunkUnited States Chris FunkKC Racing
2009L1United States Joel FeinbergUnited States Gary GibsonUnited States Eurosport Racing
L2United States John WeisbergUnited States Alain NadalUnited States Berg Racing
L3United States Chris DoyleUnited States Chris FunkSurface Exploration
2010L1United States Charlie ShearsUnited States Charlie ShearsUnited States Core Autosport
L2United States John WeisbergUnited States Jim GarrettUnited States Berg Racing
2011L1Puerto Rico Ricardo VeraUnited States Daniel ManciniUnited States Eurosport
L2Canada Robert SabatoUnited States Alan WilzigCanada 6th Gear Racing
2012L1United States Tristan NunezUnited States Jon BrownsonUnited States Performance Tech
L2United States Scott TuckerUnited States Alan WilzigUnited States Level 5 Motorsports
2013L1United States Sean RayhallUnited States Jon BrownsonUnited States Performance Tech
L2United States Brian AlderUnited States Jerome MeeUnited States Ansa Motorsports
2014L1Russia Mikhail GoikhbergUnited States John FalbUnited States JDC Motorsports
L2United States Brian AlderUnited States Jerome MeeUnited States BAR1 Motorsports
2015L1United States Kenton KochUnited States John FalbUnited States JDC Motorsports
L2United States Brian Aldern/aUnited States BAR1 Motorsports
2016L1United States Clark ToppeUnited States Joel JancoUnited States JDC Motorsports
2017LMP3United States Colin ThompsonUnited States Naj HusainUnited States P1 Motorsports
MPCUnited States Kyle MassonUnited Kingdom Stuart RettieUnited States Performance Tech Motorsports
2018LMP3United States Kris WrightCanada Cameron CasselsUnited States #30 Extreme Speed Motorsports
MPCUnited States Jon Brownsonn/aUnited States #34 Eurosport Racing
2019LMP3United States Austin McCusker Peru Rodrigo PfluckerUnited States Joel JancoUnited States #47 Forty 7 Racing
2020LMP3United Kingdom Matthew Bell United States Naveen RaoUnited States Steven ThomasUnited States #64 K2R Motorsports LLC
2021LMP3-1United States Dakota Dickerson United States Josh SarchetUnited States David Grant United States Keith GrantUnited States MLT Motorsports
LMP3-2Canada Danny Kok Canada George StaikosCanada Danny Kok Canada George StaikosCanada Conquest Racing
2022LMP3Estonia Tõnis Kasemetsn/aUnited States Wulver Racing

Circuits

External links