Here’s the latest overview based on recent reports:
- Chaz Mostert and Brodie Kostecki were involved in a Christchurch clash during the 2026 Supercars season, which led to penalties for Mostert and sparked ongoing discussion about their rivalry.[1][4]
- Since the incident, Mostert has publicly taken responsibility for the crash, emphasized moving past the feud, and indicated he’s focused on personal reflection and future races. He also attended media calls and events where he reaffirmed the goal of putting the fallout behind him.[3][4]
- Media outlets in April–May 2026 reported on fallout and reactions from colleagues and team management, with some calling for cooling tensions and others highlighting ongoing scrutiny of both drivers’ conduct.[2][5]
If you’d like, I can pull more detail on specific incidents, penalties, or quotes from the drivers, and I can summarize the current standings and upcoming events where the pair may meet.
Sources
Chaz Mostert has reiterated that the controversial Christchurch incident is "all on me," with the reigning champion determined to move past his feud with Brodie Kostecki. Mostert and Kostecki clashed in a dramatic conclusion to the Christchurch finale. Mostert was penalised over the incident, while Kostecki lost the championship lead to Broc Feeney. … In recent days, vision emerged of Mostert and Kostecki embracing at a house party, which was also attended by Brown, and Mostert's teammate...
www.supercars.comSupercars champion Chaz Mostert says he and Brodie Kostecki can put the fallout from their Christchurch clash behind them. - Australia's #1 motorsport news website - Speedcafe.com
speedcafe.comDick Johnson Racing co-owner Ryan Story says Chaz Mostert’s comments in the aftermath of a clash with Brodie Kostecki in Christchurch were “unbecoming of a reigning champion”. - Australia's #1 motorsport news website - Speedcafe.com
speedcafe.comChaz Mostert has publicly apologised to Brodie Kostecki and the Shell V-Power Racing team following the dramatic end to Race 13 in Christchurch. On the penultimate lap, Kostecki fired down the inside of Turn 2, and hit Mostert's Toyota. Mostert returned serve, the two cars clashing before Kostecki was sent into the infield. … Mostert added, in the team release: "Everyone in here is hurting a bit tonight, but that’s okay, we can use it going forward to make us stronger." In his own social media...
www.supercars.comThe championship contender bounced back to take the second sprint in Taupo.
7news.com.au