McLaren's car rear wing has sparked significant discussion following the team's victory at the Azerbaijan Grand Prix last weekend.

After the Azerbaijan Grand Prix, other teams raised concerns about whether McLaren's rear wing was legal, as the upper part seemed to move back to create a larger gap at high speed, giving Piastri a straight-line speed boost.

The FIA has been closely examining its design and even though the wing meets current regulations and passes all static tests, the Singapore GP build-up announcement, which says that they might change the technical rules if they find any issues with the cars on the grid, allows them to ask for adjustments.

Therefore, even though McLaren hasn't been found to have broken any rules, they now need to adjust their rear wing to reduce its movement.

Speaking to Sky Sports F1 in Singapore, McLaren’s CEO Zak Brown addressed the situation and defended their ‘mini-DRS’.

“It passed every single test,” Brown said.

“I think this is Formula 1, it's clever engineering. The FIA is fine with it. So it's business as usual.”

McLaren has also released a statement regarding the topic.

"Whilst our Baku rear wing complies with the regulations and pass all FIA deflection tests, McLaren have proactively offered to make some minor adjustments to the wing following our conversations with the FIA.

"We would also expect the FIA to have similar conversations with other teams in relation to the compliance of their rear wings."