McLaren arrived at the São Paulo Grand Prix as the only team on the Formula 1 grid willing to throw significant new parts at the final stretch of the 2026 season. While rivals parked development and focused on 2027, the Woking squad rolled out a four-part aerodynamic package featuring a completely redesigned front wing, a new rear wing, an updated beam wing, and revised floor furniture. Early feedback from Friday practice suggests the gamble is paying off.
Lando Norris topped Free Practice 1 and finished a strong second in FP2. Oscar Piastri also looked competitive once he climbed into the upgraded MCL40. Both drivers and the team’s senior racing director reported that the new parts are delivering the performance gains the engineers expected.
WHY MCLAREN BROUGHT THE ONLY MAJOR UPGRADE TO INTERLAGOS
Most teams have already shifted resources toward next year’s regulation overhaul. McLaren chose a dual-purpose approach. The new front wing is not just a 2026 performance part. It is an early track test of a concept the team plans to carry into the launch specification of its 2027 car. At the same time, the full package aims to help McLaren claw back ground in the tight battle for third in the constructors’ championship against Red Bull.
Interlagos offered a useful proving ground. The bumpy, high-downforce circuit stresses underfloor airflow and rear stability in ways that many modern tracks do not. A representative track like this gives engineers cleaner data on whether the new aero philosophy actually works.
WHAT CHANGED ON THE MCL40
The standout element is the front wing. McLaren completely redesigned the assembly to improve flow conditioning toward the floor and sidepods. Attachment points and flap geometry have been altered so the wing works differently with the rest of the car. The rear wing and beam wing were developed together to generate aerodynamic load more efficiently across varying conditions while improving interaction between the two components. The floor changes are smaller but targeted at stabilising underfloor airflow and refining balance.
These are not flashy last-minute add-ons. The parts were signed off earlier in the season as part of the normal development cycle, with one eye already on 2027.
FIRST IMPRESSIONS FROM THE DRIVERS AND THE PIT WALL
Norris went into the weekend with tempered expectations. He has been vocal about the MCL40’s tricky handling characteristics all season and did not believe the upgrades were designed to fix those fundamental issues. After Friday, his tone shifted.
“I think FP1 we seemed quite easily on the pace,” Norris said. “Today was also a day where we’re kind of working through the upgrades and seeing if they’re working as they should and they are, so I think we seemed to gain performance. Nothing’s changed too much from a driving point of view. It’s still tricky, but it’s maybe brought a little bit of lap time, which is what we want.”
He described the day as a “pleasant surprise” and noted a slightly more positive feeling from the car even if the fundamental character remained familiar.
Piastri echoed the positivity after his first proper run in the upgraded car, calling the early signs encouraging. Senior Director of Racing Randy Singh confirmed the data matched expectations: “It has been an encouraging day for the team. We brought a new upgrade package, including a revised front wing, and the data from both practice sessions indicates that it is delivering exactly as anticipated.”
THE BIGGER PICTURE FOR MCLAREN AND THE CHAMPIONSHIP FIGHT
McLaren enjoyed a strong mid-season period that included back-to-back wins for Norris, but the team has slipped relative to Mercedes, Ferrari, and a resurgent Red Bull in recent races. Third place in the constructors’ championship remains very much alive, and every point matters with only a handful of races left.
Beyond the immediate points battle, the upgrade carries strategic weight. By validating a 2027 front-wing concept on a real car in race conditions, McLaren gains precious data that pure simulator or wind-tunnel work cannot fully replicate. That knowledge could prove valuable when the new regulations arrive next year.
The package also signals intent. While other teams conserve resources, McLaren is still fighting. In a sport where momentum and confidence can be as important as pure performance, a positive Friday sends a message both inside the garage and to rivals.
WHAT COMES NEXT AT INTERLAGOS AND BEYOND
Saturday’s Free Practice 3 and qualifying will provide the real test. Teams often look stronger or weaker once the track rubbers in and the fuel loads and tyre strategies become more representative. Long-run pace and tyre degradation will matter more than single-lap fireworks.
If the gains hold, McLaren could find itself fighting at the sharp end of the midfield or even challenging for podiums in a race that has historically rewarded aggressive strategy and strong race craft. Rain is always a possibility in São Paulo, which would further scramble the order and reward the team that best understands its new aero package under changing conditions.
For Norris and Piastri, any extra lap time is welcome. For the engineers, confirmation that the 2027 concept works on track is potentially more valuable still. And for McLaren as an organisation, the weekend offers a chance to finish the 2026 season with renewed momentum rather than simply managing the decline of a once-competitive car.
The early signs are positive. Whether that promise survives the full intensity of a Brazilian Grand Prix weekend remains to be seen, but McLaren has at least given itself a fighting chance when almost every other team chose to stand still.
