LEGO Reviews Technic42072

WHACK!

Name: LEGO WHACK! 42072
Brand: LEGO
SKU: 42072
Rating: 4.7 (5119 reviews)

75 · RECOMMENDEDINVESTMENT GRADE: BBB2017135 pcsHigh agreement · 95%

Expert reviews

3analyzed

Owner ratings

5.1K+

Consensus

BUY

BrickScore

Recommended

Owners

Synthesized Verdict

"WHACK! lands a BrickScore of 74.6 and a Recommended verdict backed by 5,119 owner ratings averaging 4.7 out of 5, a pull-back racer that delivers real play value despite a crash feature critics found underwhelming in isolation."

WHACK! (42072) earns broad approval as a fun, durable Technic pull-back racer with a satisfying engine block ejection gimmick. Expert reviewers from Brickset and JANG rated it in the 68-78 range, praising its solid construction and playability while noting the crash feature underdelivers on its own. Owners rate it an exceptional 4.7 out of 5 across 5,119 ratings, with a 100% would-recommend rate on LEGO.com and a play experience score of 4.8 out of 5, making this one of those cases where owners are notably more enthusiastic than expert critics.

Where they split: JANG gave WHACK! a mixed 68, noting the crash feature 'doesn't do much' and produces limited visual change. Brickset reviewers were more positive at 78, calling it a solid racer with bundled play potential. Owners overwhelmingly sided with Brickset, rating play experience 4.8 out of 5.

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LOVED (6)

01Strong, durable pull-back motor that holds up to repeated impacts
02Engine block ejection feature adds a distinctive play gimmick
03Semi-pneumatic tires with excellent traction
04Clean green, black, and grey color scheme with sporty rear spoiler
05Straightforward, quick build with only 3 stickers
06Pairs naturally with sister set BASH! (42073) for competitive crash racing

CRITICIZED (6)

01Crash feature requires a forceful thump on the lever to trigger effectively
02Engine block ejection can send parts into walls or furniture when played solo
03Some Technic parts come loose after repeated impacts, raising durability questions
04Build steps can confuse younger or novice builders
05Limited play value when purchased without the sister set BASH!
06Flame pieces feel out of place aesthetically to some reviewers

What reviewers are saying

"The build itself is straightforward and makes for a very strong vehicle indeed."

Brickset Reviews

"The build of this is pretty good actually for its size and number of pieces I think. I think it's a pretty worthy little little chassis set up there."

JANG's LEGO Reviews

Ecosystem

42058 Stunt Bike — As a comparison, I enjoyed this one more than the Stunt Bike that I previously reviewed. Even if I take the flying engine block feature out of the equation, there is still a good racer at the heart of it.

42084 Hook Loader — In many ways it is a more attractive starter set than the 42084 Hook Loader as it has more 'fun' on offer.

42073 BASH! — Designed to work with sister set in competitive play; comparable build and playability.

Bash — Whack has slightly better acceleration, Bash has better top speed; same crash feature on both; Whack has four equal-sized tires while Bash has different tire sizes front to rear, making them unequal for racing despite being intended to race against each other. Whack's design aesthetics preferred by reviewer.

TechnicTier 2Investment Grade

By Reviewer · 2

Avg score

Consensus

BUY

Brickset Reviews

Editorial Source · avg of 2

BUY

"The build itself is straightforward and makes for a very strong vehicle indeed."

Key Pros

✓Excellent pull-back motor functionality
✓Engaging engine block ejection play feature
✓Strong, well-constructed vehicle

Key Cons

✕Lever mechanism requires significant force ('good old thump') to eject engine block effectively
✕Single-set play may result in wall/furniture damage from ejected parts

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JANG's LEGO Reviews

Expert Video Source

"The build of this is pretty good actually for its size and number of pieces I think. I think it's a pretty worthy little little chassis set up there."

Key Pros

✓Pretty good build quality for size and piece count
✓Good acceleration
✓Really good traction with semi-pneumatic tires

Key Cons

✕Crash feature not spectacular and doesn't do much
✕Limited visual change when crash occurs

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Dimensional Analysis

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Exclusivity

Brickset Reviews: wide retail

Minifigures & Standout Parts

Standout parts (per reviewers)

Engine block (ejectable piece)
New annual play gimmick; mounts on blue technic pins with hinged lever mechanism for ejection
semi-pneumatic tires
Conform to surfaces, provide good traction
chunky tires
Set of 4 matching tires noted by commenter as a distinguishing feature

What Owners Say · summarized from 17 written reviews (LEGO, Amazon, Walmart)

Owners love the sturdy pull-back action and pop-out engine feature for crash play, though some find the build complexity high and wish for a steering wheel.

COMMON PRAISE