The Vasser Sullivan Racing Lexus RC-F GT3 at Detroit in 2025. Image: Jake Galstad/Lumen Digital Agency
IMSA shares the limelight with IndyCar at the Detroit Grand Prix, with the sports cars and GT machines racing on Sunday (AEST) and the open-wheelers on Monday (AEST).
At its biggest endurance events, IMSA features four classes – GTP, LMP2, GTD Pro, and GTD.
However, for the Chevrolet Sports Car Classic, only the fastest GTP and GTD Pro competitors will take to the narrow streets of Detroit.
For fans unfamiliar with the naming convention, GTP is the terminology IMSA uses for what the FIA World Endurance Championship calls Hypercar.
Both GTD classes are for GT3 homologated cars, with the two GTD classes divided by all-Pro and Pro-Am driver line-ups.
Mostert will join Vasser Sullivan Racing in the #14 Lexus RC-F GT3 alongside Aaron Telitz.
The team will field two entries with Jack Hawksworth and Ben Barnicoat in the #15 sister car.
Sunday’s race is also 100 minutes, making it one of the shortest races on the calendar.
“I’m so excited to have the opportunity to race for Vasser Sullivan,” said Mostert.
“I’ve raced in the (United) States a few times and always thought that the team looks so professional and like a tight-knit family so it’s an honour to be able to race for the team.
“The Lexus RC F GT3 car looks incredible, and I can’t wait to get my first laps.
“I’m new to the Toyota-Lexus family and being able to get this opportunity being an Australian driver is very much a pinch yourself moment.
“I can’t wait to get to Detroit! I love street tracks and am looking forward to the challenge.
“I can’t thank my Supercar team, Walkinshaw TWG Racing, enough for allowing me to compete.”
Telitz said he is looking forward to working alongside Mostert.
“Really looking forward to teaming up with Chaz (Mostert) on the streets of Detroit,” said Telitz.
“It’s always a lot of fun to race with someone new and Chaz brings a ton of experience on street courses from racing in the Supercars Championship.
“Can’t wait to grab a trophy with him this weekend!”
How to watch Chaz Mostert in IMSA at Detroit
Live coverage of the IMSA SportsCar Championship at Detroit will be live-streamed via YouTube, IMSA.TV, and Speedcafe.
What time does the race start?
The IMSA SportsCar Championship Chevrolet Sports Car Classic gets underway at 6:10am AEST on Sunday, May 31.
IMSA SportsCar Championship Detroit schedule (AEST)
Friday, May 29
Practice 1 – 10:00pm (180 mins)
Saturday, May 30
Practice 2 – 1:30am (180 mins)
GTD Pro Qualifying – 6:50am (15 mins)
GTP Qualifying – 7:10am (15 mins)
Sunday, May 31
Race – 6:10am (100 mins)
IMSA SportsCar Championship Detroit GTP entry list
Num
Driver 1
Driver 2
Team
Car
5
Tijmen van der Helm
Laurin Heinrich
JDC-Miller MotorSports
Porsche 963
6
Laurens Vanthoor
Kevin Estre
Porsche Penske Motorsport
Porsche 963
7
Felipe Nasr
Julien Andlauer
Porsche Penske Motorsport
Porsche 963
10
Ricky Taylor
Filipe Albuquerque
Cadillac Wayne Taylor Racing
Cadillac V-Series.R
23
Ross Gunn
Roman De Angelis
ASTON MARTIN THOR Team
Aston Martin Valkyrie
24
Sheldon van der Linde
Dries Vanthoor
BMW M Team WRT
BMW M Hybrid V8
25
Philipp Eng
Marco Wittmann
BMW M Team WRT
BMW M Hybrid V8
31
Jack Aitken
Earl Bamber
Cadillac Whelen
Cadillac V-Series.R
40
Jordan Taylor
Louis Deletraz
Cadillac Wayne Taylor Racing
Cadillac V-Series.R
60
Tom Blomqvist
Colin Braun
Acura Meyer Shank Racing w/Curb Agajanian
Acura ARX-06
93
Renger van der Zande
Nick Yelloly
Acura Meyer Shank Racing w/Curb Agajanian
Acura ARX-06
IMSA SportsCar Championship Detroit GTD Pro entry list
Num
Driver 1
Driver 2
Team
Car
1
Neil Verhagen
Connor De Phillippi
Paul Miller Racing
BMW M4 GT3 EVO
3
Antonio Garcia
Alexander Sims
Corvette Racing by Pratt Miller Motorsports
Corvette Z06 GT3.R
4
Tommy Milner
Nicky Catsburg
Corvette Racing by Pratt Miller Motorsports
Corvette Z06 GT3.R
9
Andrea Caldarelli
Sandy Mitchell
Pfaff Motorsports
Lamborghini Temerario GT3
14
Jack Hawksworth
Ben Barnicoat
Vasser Sullivan Racing
Lexus RC F GT3
15
Aaron Telitz
Chaz Mostert
Vasser Sullivan Racing
Lexus RC F GT3
59
Max Esterson
Nikita Johnson
RLL Team McLaren
McLaren 720S GT3 EVO
64
Ben Barker
Dennis Olsen
Ford Racing
Ford Mustang GT3
65
Christopher Mies
Frederic Vervisch
Ford Racing
Ford Mustang GT3
77
Nick Tandy
Harry King
AO Racing
Porsche 911 GT3 R (992)