McLaren Senna GTR

Technic

McLaren Senna GTR

42123 · 2021 · 830 pieces

RETIRED 2023-12-31 · retail $49.99 · 2021-01-02 → 2024-02-05 · ★ 4.0 (3) · owned by 8,926 · wanted by 1,192

Sealed mark is −7% against retail.

sealed: sells ≈ 2.0×/mo · 17 live asks ≈ 8.5 mo of supply opened: sells ≈ 1.5×/mo · 8 live asks ≈ 5.3 mo of supply

sealed mark$46.43 ⟨$42.2 — $48.61⟩ n=12
opened mark$21.52 ⟨$20.3 — $25⟩ n=9
Jan 2026sealed ── · opened ─ ─Sep 2026

Your position

The evidence

2026-09-17sold · opened · bricklink$21.52
2026-09-02sold · opened · bricklink$20.3
2026-09-01sold · opened · bricklink$19.49
2026-08-30sold · sealed · bricklink$46.52
2026-08-23sold · sealed · bricklink$46.74
2026-08-19sold · sealed · bricklink$42.93
2026-08-16sold · opened · bricklink$23.12
2026-08-13sold · sealed · bricklink$35
2026-08-10sold · opened · bricklink$28.55
2026-07-25sold · opened · bricklink$13.32
2026-06-08sold · opened · bricklink$21
2026-05-17sold · sealed · bricklink$46.43

Live asks: opened n=8, median $29.99, from $19.99 · sealed n=17, median $54.99, from $36 · asks are opinions, not value.

Parted out: $73.47 gross · $32.67 net at 99% of pieces priced.

Instructions — 2 official PDFs

BI 3104, 144+4, 42123 V29
BI 3104, 144+4, 42123 V39

Hosted by LEGO; links open in a new tab.

Reviews — from Brickset owners

Another solid addition to this line of smaller Technic vehicles★ 4/5

DoonsterBuildsLego · 2021-04-10 · value 4/5 · build 4/5

I'm enjoying this line of smaller Technic vehicles, and this Mclaren Senna GTR is no exception. It's a good-looking car, with an enjoyable build and decent functions at this scale. The build is relatively straightforward, coming together over 3 sections in about 3h. The build sequence starts with the main chassis, then the rear detailing, finishing with the front & cockpit details. The chassis section is particularly…

Sienna GTR★ 4/5

Boomerang4576 · 2021-03-25 · value 3/5 · build 4/5

The McLaren Sienna GTR technic Firstly the technic model is a pleasure to build with reasonable accuracy to the real race car with the front wings an rear spoiler. The build took me roughly 6 hours to build. There are a lot of stickers on this model an believe they need to be correctly attached. I would like to have seen working suspension an a dashboard decal an perhaps access to the motor to . the design is good an…

Fun, Straightforward Build - Good Display or Play Piece★ 5/5

WhitandBrandon · 2021-02-05 · value 5/5 · build 5/5

We got this a day or two after release, and my 7-year old son had the build done quite quickly for someone his age on a Technic set after I helped organise the pieces for him. I am not sure I would treat the 10+ age designation as gospel, it's a fairly straightforward Technic Build for those who've built Technic in the past. However, I would say if you're not used to Technic builds, this probably isn't a great piece …

Reviews are Brickset members' opinions, not valuation evidence.