The IMSA Prototype Challenge Presented by Mazda has announced a new format ahead of the 2018 season, with the adoption of an endurance format across a six-race season, opening with the series’ inaugural race at Daytona International Speedway.
The 2018 IMSA Prototype Challenge again will include both the LMP3, which began competing in the series this year, along with the Mazda Prototype Challenge (MPC) class, which features Mazda powered open-cockpit Elan race cars.
The IMSA Prototype Challenge will shift from its current “sprint race” format of two 45-minute races per event to a single 1-hour, 45-minute endurance race per weekend for both classes. Teams will have the option of using single- or two-driver lineups for each race. In the LMP3 class, all drivers will be required to have an FIA Driver Rating and must be either Bronze- or Silver-rated to be eligible to compete, with a maximum of one Silver-rated driver eligible per car.
Driver ratings are not required for the MPC class. However, drivers with a Platinum rating by the FIA are prohibited from competition. Drivers with Gold ratings also are typically prohibited, but may be considered at the discretion of the race director.
No driver may compete in more than one race car per weekend. The qualifying driver must start the race on the tires used in qualifying, and each competing driver will be required to meet a 40-minute minimum drive time.
Each pit stop also will have a minimum-time requirement, as team personnel and pit lane equipment will be limited. Drivers and tires may be changed at the same time during pit stops, but the driver must be out of the car and no other work may be performed on the car during refueling.
During any full-course caution periods, pass-arounds and class splits for restarts will be used, similar to the current “short yellow” procedures used in the WeatherTech Championship and Continental Tire Challenge. The pits will be closed for all full-course cautions and will reopen at the end of the first green-flag lap following a restart.
As is currently the case in the IMSA Prototype Challenge, LMP3 and MPC class winners and podium finishers each will be recognized individually. All drivers entered in the same car will receive the same amount of points for the car’s finishing position in each race.
“The feedback we’ve received consistently from IMSA Prototype Challenge Presented by Mazda competitors – especially since the introduction of LMP3 race cars to the series this year – is that they had a strong desire to participate in longer races with the option of having two drivers,” said IMSA President Scott Atherton. “This is an example of IMSA listening and responding. We expect that this substantial change to the format will be extremely well received, not only by the competitors and series stakeholders, but also by IMSA race fans.”
The 2018 season begins the weekend of Jan. 5-7 on the revered 3.56-mile Daytona International Speedway road circuit as part of the annual Roar Before the Rolex 24 At Daytona, which also includes preseason test sessions for the IMSA WeatherTech SportsCar Championship and the IMSA Continental Tire SportsCar Challenge. The championship then moves to Sebring International Raceway, Barber Motorsports Park, Canadian Tire Motorsport Park, Virginia International Raceway and Road Atlanta.