Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗

Technic · SET 42172

McLaren P1™

The 1:8-scale McLaren P1 combines bodywork, engine and Technic mechanisms. Doors, suspension and a spoiler accompany a technical project that rewards checks along the way.

Pieces: 3,893
Release year: 2024
Theme: Technic
Set number: 42172
LEGO recommended age: 18+
LEGO Italy price: 449.99 €

View on LEGO Italy Official building instructions

Available at LEGO Italy when checked on 22 October 2026. Availability can change. Check the store for the latest information.

Source: LEGO Italy · Price checked on 22 October 2026. Price and availability may change. Check the store for current details. This is not a verified launch price.

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Official English name verified at: LEGO English catalogue ↗ · Checked on 24 October 2026.

TIME TO BUILD

How long does it take to build McLaren P1™?

Active building time · one person

A starting point for planning your build. Times for each experience level are editorial estimates, not measurements submitted by HowLongToBuild users.

Editorial estimate informed by external reports

Beginner

≈ 29 hSuggested range20 h 15 min – 40 h 30 min

Intermediate

≈ 19 hSuggested range13 h 15 min – 26 h 30 min

Experienced

≈ 12 hSuggested range8 h 30 min – 16 h 45 min

Based on one person building the set for the first time, following the original instructions and using numbered bags where supplied. Includes normal piece-finding and minor adjustments; excludes long breaks, filming, dismantling and modifications. Sources may use different methods. This range is neither a statistical interval nor a limit: your build may take less or more time.

How we estimate times · sources and method

Technic axles, transmission and alignment deserve checking before the bodywork is closed. Familiarity with Technic matters more than experience with conventional bricks alone. Experience bands are cautious editorial estimates, not measured user averages.

Sources do not always specify the builder’s experience. The three experience bands are our editorial assessment, based on the complexity of the set and individual accounts where available.

Brick Fanatics · McLaren P1™ ↗
The review reports about eleven hours without dividing times into three experience levels.

Checked: 22 October 2026 · Method v1.0 · Limited reports; not a statistical average.

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BEYOND THE BRICKS

Did you know?

The model, the history, the ideas

Inside the set

The engine stays on show

A removable rear cover reveals the V8 with moving pistons, keeping some of the mechanics visible after the build is finished.

LEGO source

A spoiler with adjustable height

The rear spoiler’s height can be adjusted. Alongside dihedral doors and suspension, it adds working features to the supercar’s bodywork.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

Three hundred and seventy-five road cars

Production of the road-going McLaren P1 stopped at 375 cars. The track-focused P1 GTR followed at the end of that run and was offered to owners of the road car.

McLaren Automotive

A hybrid hypercar

The real P1 pairs a combustion engine with IPAS electric assistance. Electrical power supports performance alongside the work of the engine.

McLaren Automotive

Written by HowLongToBuild · Sources are linked with each story · Checked on 22 October 2026. Historical facts and story details refer to the context described.

THE COMMUNITY’S EXPERIENCE

What was it like to build?

Three separate scores from 1 to 10. For difficulty, 1 means very easy and 10 means very difficult.

No approved ratings yet. Scores are never generated by this site or inferred from the recommended age.

Building tips from the community

Specific steps, useful checks and sticking points. Contributions appear after moderation, in their original language. Do not upload instruction pages or personal contact details.

No approved tips yet.

SET THE MOOD

A soundtrack for your build

McLaren P1™ · Selected for the subject and atmosphere

For intricate structures and extended sessions we choose a quieter ambient texture. It leaves space for the instructions, while the electronic alternative adds energy when you want it.

OUR PICK

Ambient 1: Music for Airports

Brian Eno

Ambient · minimal and relaxed

Spotify ↗Apple Music ↗

Try a different atmosphere

ANOTHER MOOD

TRON: Legacy

Daft Punk

Electronic and orchestral · pulsing

Spotify ↗Apple Music ↗

A build to spread over several sessions: choose the more understated option when you want the instructions to take centre stage. The music does not set your pace.

Editorial suggestions, not official soundtracks for the set. External services may require an account or subscription; editions and availability can vary by country. Suggest another soundtrack →

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