A tough weekend for Chaz Mostert at the Supercars Darwin Triple Crown

Image credit: Walkinshaw TWG Racing
It was a well-fought weekend for Chaz Mostert in the No. 1 Mobil 1 Optus Racing Toyota GR Supra at the Darwin Triple Crown, with the Supercars champion achieving a hugely impressive 400 Supercars starts on the Saturday – but unfortunately difficulties from Friday to Sunday led to a mixed bag of results.
The Darwin Triple Crown is a massively exciting part of the Supercars calendar, with each team decorating their cars with Indigenous liveries (and Chaz Mostert’s car looking absolutely deadly). The weekend takes place at Hidden Valley raceway, with three races from Friday to Sunday.
Chaz managed to take P7 on the Friday session, climbing from his P11 starting position across the 100km race.
“We moved up four spots into P7, the car felt pretty racey out there so that gives us a strong base for the rest of the weekend, we just need to be starting further up the front,” Chaz said.
Image credit: Walkinshaw TWG Racing
The 200km Saturday race saw Chaz start in P4 after a terrific performance in the Top 10 shootout. Unfortunately Chaz dropped down to P15 after encountering oil on the track.
The No. 1 Supra was consistently the fastest car on the circuit, with a tyre advantage that allowed him to weave up the grid, taking eight positions and finishing in P6. This was a big race for Chaz, capping off 400 Supercars Starts across his career.
“In my 400th career Supercars race, I honestly thought we had a shot at the podium.
When I hit some fluid on the circuit at Turn 5, went off the road, and dropped all the way back to fourteenth in an instant,” Chaz added.
“But you know what? That's when it got fun. I just put my head down, switched into attack mode, and had an absolute blast fighting my way back through the field lap by lap.
To come home sixth after starting the second half of the race from 14th felt pretty special. As much as we were gutted with the result, it's always pretty awesome when you get to drive a fast, fast Supercar — and that car was up there with one of the coolest Gen3 cars I've ever driven. Massive thanks to everyone at Walkinshaw TWG Racing for giving me that weapon.”
Image credit: Walkinshaw TWG Racing
Unfortunately, the 200km race on Sunday was a bit tough. Chaz did exceptionally well in the Top 10 shootout, earning P5 on the starting grid, and climbing to P4 early on in the race. Running wide, Chaz dropped down to P6, but continued to battle it out with the rest of the grid. Near the end of the race, Chaz was in P7. With only four laps to go, the car unfortunately had to be retired after it had suffered a mechanical failure.
“We were running seventh with just four laps to go when the Supra let go spectacularly — smoke billowing, engine gone. I told the guys on the radio: 'My engine just let go mate, gone.' Absolutely gutting. We came away with zero points from what could have been a top-seven finish, and that stings,” Chaz said.
“Darwin was a weekend of 'what ifs' — but the speed we showed throughout proves the Supra has what it takes to run at the front. I'm proud of how the team kept fighting through every setback, and I know we'll come back stronger. The pace is there. We just need the results to match it.”
Image credit: Walkinshaw TWG Racing
As Optus marks five years partnering with the team, it’s about more than just the racing — it’s about the unique moments and meaningful connections this partnership makes possible. From behind-the-scenes access to on-the-ground experiences in Tasmania, we’re proud to create opportunities for fans and local communities to get closer to the team and the sport.
Our commitment to Walkinshaw TWG Racing is grounded in a genuine passion for community. Through Supercars — one of Australia’s most iconic sporting platforms — we’re proud to help bring families, friends and fans together, both at the track and beyond.
The next race on the Supercars calendar is the Townsville 500, taking place over July 10 – July 12. Bring it on.

Zachariah Kelly is a writer at Optus, specialising in mobile technology and consumer electronics. With 6 years behind him covering the Australian tech landscape, Zac has written for several Australian news websites. When he’s not writing about the latest phones, he’s obsessing over electric cars and video games.