The LEGO Technic Bugatti Chiron (42083) is worth owning as a display model and barely worth holding as an asset. Brickset lists it at $349.99 for 3,599 pieces, retired on 31 December 2022, and as of August 2026 Brick Ranker had sealed copies at $397.74. That is 13.6 percent of growth in nearly four years, or about 3.6 percent a year.
What $349.99 bought
Brickset lists 42083 with 3,599 pieces at $349.99 in the US and £319.99 in the UK, released on 1 June 2018 under Technic's licensed subtheme. It is rated 16+ and comes to 9.7 cents per piece. It holds 4.3 out of 5 from 668 Brickset ratings, which is respectable rather than remarkable for a flagship.
The model is 14 by 56 by 25 cm, so it is long and low. New Elementary put the finished weight at nearly 3 kg, which turns out to matter more than it sounds.
The build arrives in six numbered boxes with numbered bags inside them, which the review called a godsend at this size, and the instructions outline newly introduced elements in red so you can spot them as you go.
The gearbox is the set
New Elementary called the model a "beautiful and faithful rendition of the original" and reserved its strongest praise for the transmission, describing a "wonderfully complex assembly" built around a wave selector and several new functional elements. The reviewer highlighted an unusual stepper mechanism that uses a 24-tooth gear with all four of its holes employed at once, which is rare in official sets.
The W16 engine is the other headline, and it needs an asterisk. The review is clear that what you actually build is a V8 with two L4 engines underneath, because a genuine W16 layout does not survive the scale reduction. It looks right. It is not the thing it is named after.
The warning attached to all of this is that the build is "intricate and complicated," and mistakes are "painful to correct later," especially inside the gearbox. Take your time in those bags.
The functions do not really work
This is the part that keeps the score at a 7. New Elementary catalogued a string of specific functional failures, and they are the kind you discover after the build rather than during it.
The steering wheel is hard to reach and the turning radius is enormous. The front left wheel rubs against the gear shift mechanism when you turn left. The front suspension does not fully return after being depressed. The forward gears "spin extremely slowly in relation to the engine, with no noticeable difference in speed between them," which undercuts the point of building an eight-speed gearbox. The rear light assembly is called the model's "structurally weakest point" and is easily damaged. And most of the gearbox you spent hours on is hidden once the bodywork goes on.
Add the 3 kg weight and the review's conclusion follows: this is a set for display and for parts inspiration, not for pushing around a table or converting to remote control.
Nearly four years of very slow growth
Brick Ranker valued sealed copies at $397.74 from six months of recorded sales ending August 2026, against a history of 1,054 sales since December 2021, and rates its confidence High. That is 13.6 percent above the $349.99 retail price, or about 3.6 percent a year since the set left shelves at the end of 2022. Brickset's own page is more conservative at roughly $364 for a new copy, a $34 spread between the two.
Set that against Sanctum Sanctorum (76218), which retired two years later and was already 23.4 percent up as of August 2026, at a yearly rate of about 13.4 percent. The Chiron has had twice as long and delivered a quarter of the annual return. Big Technic supercars have a reputation as investment sets that the numbers here do not support. Reputations like that survive because nobody checks them against their own shelf, which Stud Vault makes straightforward.
For a retirement story that ran the other way, the Concorde 10318 review covers a set where the deadline actually mattered.
Who it suits
Buy the Chiron if you want the mechanism, you build Technic for the engineering rather than the play features, and the $364 to $400 range seen in August 2026 is a price you are comfortable with. The gearbox alone justifies the build for the right person, and the parts inventory is a genuine resource.
Skip it if you want the functions to work, if you want a model you can handle, or if you are buying it as a store of value. By August 2026, almost four years of retirement had produced 3.6 percent a year, which is not what people mean when they call a set an investment.
