
"A BrickScore of 70.8 backed by a 4.79 owner average from over 10,000 buyers confirms the McLaren Senna GTR as one of the most satisfying mid-size Technic cars ever released: the combination of working pistons, butterfly doors, and a $50 price point made it a near-instant classic in the lineup."
The McLaren Senna GTR (42123) is a mid-tier Technic car that reviewers and owners agree punches well above its $49.99 price point, delivering a visually striking supercar body with functional moving pistons and dihedral butterfly doors. With a BrickScore of 70.8 (Recommended) and an owner average of 4.79 across more than 10,000 ratings spanning Amazon, Walmart, and LEGO.com, the set has proven one of the most broadly appealing Technic cars at this scale. Both critics and buyers are aligned: the price-to-features ratio is the headline story here.

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Unlock with Collector or Reseller"it has that functional working pistons in the engine which is amazing one of my favorite things out of Technic"
DG Bricks
"I seemed to have complained about it quite a lot but actually I do like it."
Brickset Reviews
"The car isn't instantly recognizable from this particular angle, so, were it not for the branding and logos, I doubt I would have recognized the car."
The Brothers Brick"better than I expected"
JANG's LEGO Reviews
"Overall, I enjoyed the build. It felt better than the 42122-1 Jeep Wrangler I built previous for a review."
Rebrickable Reviews"it has that functional working pistons in the engine which is amazing one of my favorite things out of Technic"

"I seemed to have complained about it quite a lot but actually I do like it."

"The car isn't instantly recognizable from this particular angle, so, were it not for the branding and logos, I doubt I would have recognized the car."
"better than I expected"

"Overall, I enjoyed the build. It felt better than the 42122-1 Jeep Wrangler I built previous for a review."
Owners overwhelmingly love the McLaren Senna GTR as a sharp-looking, rewarding Technic build at an excellent price point, though a vocal minority report frustrating issues with missing pieces and jamming engine pistons.
Amazon4.8
LEGO.com4.6