
"Mystery Plane Adventures earns its Mixed Reviews rating: the Headless Horseman is a genuinely excellent minifigure but the biplane is thin and overpriced at $0.16 per piece, and expert reviewers split on whether the figure lineup rescues the value. Scooby-Doo fans and younger builders rate it far higher, averaging 4.69 out of 5 stars across 339 owners."
Expert reviewers land in firmly mixed territory on Mystery Plane Adventures (BrickScore 64.3), with JANG calling it a fair deal once you account for the content and BRICKSET labeling it the weakest of the five Scooby-Doo sets. Both agree the minifigure trio is the main draw and that the plane itself is underwhelming for the price. Owner sentiment tells a very different story: 339 ratings average 4.69 out of 5, with 94% saying they would recommend it, showing that Scooby-Doo fans and younger buyers are far more forgiving of the value concerns critics raised.
Where they split: JANG rated the set a 78 and called it a reasonable buy given the content volume; Brickset gave it a 50 and recommended waiting for a 25% discount, calling the plane unimpressive. Owner ratings at 4.69 out of 5 align much closer to JANG's more forgiving read, creating a meaningful split between critical and consumer sentiment.

Is this a smart buy? BrickPicker's data-grounded investment verdict.
Unlock the Max Profit Opinion: our stance (buy / accumulate / hold / pass), the reasoning, the exact data behind it (eBay + BrickLink comps, CAGR vs MSRP, our retirement model), and whether the reviewer community agrees.
Unlock with Collector or Reseller"I like the proportions of it, and I think that it does a good enough job of of capturing the details of a classic biplane."
JANG's LEGO Reviews
"75901 Mystery Plane Adventures is the weakest of the five Scooby-Doo sets in my opinion, although it still holds appeal purely for the presence of the Headless Horseman."
Brickset Reviews"I like the proportions of it, and I think that it does a good enough job of of capturing the details of a classic biplane."

"75901 Mystery Plane Adventures is the weakest of the five Scooby-Doo sets in my opinion, although it still holds appeal purely for the presence of the Headless Horseman."


Owners overwhelmingly praise the set for its fun Scooby-Doo theme, sturdy build quality, and quick assembly, though a minority voice concerns about the price-per-piece value and minifigure count.
Amazon4.7
LEGO.com4.7