LEGO Technic 42172 McLaren P1

LEGO Technic set 42172 “McLaren P1” represents the McLaren P1 as a Technic building model.

Set 42172 “McLaren P1” brings a sports road car into the LEGO Technic building system. Within Technic, it belongs with vehicle models that emphasize construction, internal structure and shaped bodywork rather than character based scenes or minifigure play.

This set appears in our LEGO McLaren guide, which places it against the other versions.

The build is therefore focused on Technic elements such as beams, axles, connectors and panels that form the vehicle’s frame and body.

It is mainly aimed at Technic builders and collectors who want a car model for building, display or collection. Among sets in the same theme, it is clearly identified by set number 42172, the name “McLaren P1” and its substantial Technic parts count.

Inventory of set 42172

The inventory of set 42172 lists 3,893 pieces, spare parts excluded: 374 different lots (one shape in one color) for 263 part shapes. The box also contains 50 spare parts, for small elements that are easy to lose.

Colors of set 42172

Main color: black, making up 43% of the parts, followed by blue (13%) and light bluish gray (12%).

Part types

Most common parts in set 42172

215 of the 263 part shapes in this set have their own page on Setobrick, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 42172

14 part shapes in set 42172 appear in no other set in the catalog, most often printed elements, stickers or molds specific to the model. If one gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set. The table lists 8. Counting colors, 42 lots in the set are not found in any other set.

Rebuilding set 42172 from another set

Share of the parts of set 42172 found in each of these similarly sized sets, counting shape, colour and quantity:

Set 42232 Koenigsegg Sadair's Spear Megacar supplies 66% of them: enough to build a good part of the model before filling in the rest piece by piece.

Size of set 42172 within its line

With 3,893 pieces, set 42172 ranks #5 out of 443 Technic sets in our database, which have an average of 658 parts. Among the 571 sets released in 2024, it ranks #6. That is 5.9 times the average Technic set size.