A new, multiple-class, sprint-race series will make its debut in 2023 as International Motor Sports Association (IMSA) officials have unveiled the IMSA VP Racing SportsCar Challenge, with entitlement sponsorship from VP Racing Fuels.

The series will feature currently homologated Le Mans Prototype 3 (LMP3) and Grand Touring 4 (GT4) race cars in 45-minute sprint races with one driver per car. The new series class names will be LMP3 and GSX, respectively. To be eligible to drive in either class, all drivers must have an FIA Driver Categorization of either Bronze or Silver. A five-event, 10-race schedule is planned for the series, which replaces the current IMSA Prototype Challenge series.

The IMSA Michelin Pilot Challenge will continue in its traditional endurance format, featuring the Grand Sport (GT4) and Touring Car (TCR) classes, competing across a 10-race schedule.

Each IMSA VP Racing SportsCar Challenge event weekend will include a qualifying session in which the fastest timed lap will set the field for the first race. The second fastest qualifying lap by each car will determine the starting grid for the second race of the weekend. There will be no pit stops during the races, and all race cars will ride on Michelin tires.