This 1:43 scale model documents car #81 as it ran at Circuit of the Americas on 19 October 2025, Round 19 of the 24-race calendar. Piastri started sixth on the grid, completed all 56 laps and finished fifth, 29.678 seconds behind the race winner — scoring 10 points on a weekend when McLaren had already sealed the Constructors' Championship at the preceding Singapore Grand Prix.
The MCL39: Carbon, Pullrod and a Mercedes V6
Designed under Rob Marshall's direction as the direct successor to the MCL38, the MCL39 runs a carbon-fibre composite chassis with pullrod front suspension and pushrod rear suspension — the same layout inherited from its predecessor, but with increased anti-dive geometry. Power comes from the Mercedes-AMG F1 M16 E Performance unit: a 1.6-litre turbocharged direct-injection V6 capped at 15,000 RPM, paired with kinetic and thermal energy recovery systems and McLaren's 8-speed sequential seamless semi-automatic gearbox. The complete car, driver included, weighs 800 kg without fuel.
A Two-Race Iridescent Finish, Not a Chrome Repeat
The livery seen on this model is the fourth Google-partnered special McLaren had run, following Chrome designs at Silverstone in 2023 and 2025, and at Austin in 2024. For 2025 COTA, the team switched from Chrome to an iridescent finish developed in collaboration with Google Gemini, described by McLaren as inspired by the sparkle of Gemini's colour palette over the car's orange and black base. Crucially, the same livery also appeared at the following Mexico City Grand Prix, making it a two-race special rather than a single-event one-off — and limiting the Spark models that carry it to just two event-specific releases.
Spark Model: Hand-Made Resin at 1:43
Produced by Spark Model and officially part of their 2025 McLaren F1 Team Collection, this is a hand-made resin model — not diecast — at 1:43 scale. Resin construction allows Spark to reproduce the MCL39's revised sidepod inlet shapes, updated engine cover bodywork and wider airbox inlet without the tooling compromises of metal casting. The car number 81, driver name and race-specific detail are applied to reflect the verified Austin result. The model is rated for collectors aged 14 and older.
Championship Context on the Shelf
At approximately 13 cm in length, the model occupies a standard 1:43 single-seater footprint — manageable in even compact display cases. Its historical weight is considerable: at Austin, Piastri led the Drivers' Championship by 22 points over team-mate Norris. The MCL39 ultimately delivered 14 race wins, 13 pole positions and a record 34 podium finishes across 2025 — its first Constructors' and Drivers' double since the Adrian Newey-designed MP4/13 of 1998. Collectors building a race-by-race 2025 season set will find this model pairs naturally with the Norris #4 Austin entry in the same Gemini livery, or with the Spark twin-car Constructors' Champion set.
Frequently asked questions
How big is the 1:43 scale model?
The 2025 FIA regulations set a maximum car length of 5,600 mm for a Formula 1 car. At 1:43 scale that works out to approximately 13 cm — compact enough to fit comfortably on a standard display shelf alongside other 1:43 single-seaters, but worth allowing a little extra clearance for the front wing overhang.
Does the model have opening parts?
No. As a hand-made resin model, the body is a sealed one-piece construction with no opening panels. Detail is concentrated on the exterior aerodynamic surfaces: the revised sidepod inlets, updated engine cover, wider airbox inlet, and the full iridescent Google Gemini livery applied over the orange and black base.
Is this a resin or diecast model?
Resin. Spark Model produces this piece by hand in resin — not diecast metal — which is standard for their 1:43 Formula 1 race-car range and allows finer reproduction of complex aerodynamic bodywork.
Why does the livery on this model differ from the standard 2025 McLaren season livery?
McLaren ran a special iridescent finish at the 2025 US Grand Prix and the following Mexico City round, created in collaboration with Google Gemini. It replaced the regular papaya orange livery for those two races only, making it one of the most visually distinctive MCL39 variants of the season — and one of only two Spark 1:43 releases to carry it.
