Is engine profitable to sell on Amazon United Kingdom?

The niche generates £83K/yr across 31 tracked products. 1 of 15 products launched in the last 360 days are still selling. 90-day search growth is -15.7%. Flapen's verdict: Skip it (48/100).

How competitive is the engine niche?

15 brands and 36 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 70% of demand.

What do buyers complain about in engine?

Top complaints mined from reviews: Assembly/Installation, Instructions/User Manual/Troubleshooting, Defective Material/Parts. The return rate is 1.5%.

When does demand for engine peak?

Demand peaks in Nov–Dec; the busiest month runs 4.1× the quietest.

What does it cost to enter the engine niche?

Listings span £23.57–£527.72; the average listing price is £67.45 (sweet spot $15–$100). The average incumbent carries 165 reviews — the moat a new listing must climb.

engine

Skip it

Weak search conversion (0.5%) — this niche doesn't clear our bar today.

Review moat

Great165

avg incumbent reviews — the moat a new listing must climb

Avg price

Great£67.45

avg listing price — sweet spot $15–$100

Returns

Great1.5%

return rate — above 5% kills the launch gate

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Competition

Good46%

top-5 click share — leaders hold, buyers still browse

Brand share

Good70%

top-5 brand share — brands hold most of the demand

Market size

Bad£83K

£83K/yr · 237K searches

Growth

Bad-15.7%

90-day search growth — must beat 0% to launch

Price range

Bad£23.57–£527.72

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Bad0.5%

search→purchase rate — share of searches ending in a sale

Signals High Price

According to Flapen's Amazon United Kingdom niche tracking, engine is a £83K/yr Amazon United Kingdom market (237K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 48/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

engine market data

Units sold / yr: 2K–3K; avg 0–100/product
Revenue / yr: £135K–£169K; units × avg price
Conversion rate: 0.5%
Avg BSR: #1,374
Page quality: 0%
Prime: 94%
Sponsored: 94%
Out of stock: 11.0%
Avg brand age: 34 months
Avg seller age: 184 days

Competition & brand share

The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 rising

Sellers

Top-5 brand share

70%

Top 20: 100%

Top-5 click share

46%

Top 20: 86%

Open market

24%

Mould King21%
Machine Works19%
Reobrix14%
Bathgate8%
Nifeliz7%
QGGQ7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -15.7% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 4.1×

Open Trend

Top engine search terms

engine31K/yr -9.4%0.2% conv.
v8 engine model kit38K/yr -18.3%1.6% conv.
lego engine25K/yr -30.5%0.9% conv.
model engine15K/yr -2.2%0.4% conv.
model engine kits24K/yr -51.8%0.5% conv.
model engines for adults to build11K/yr +23.2%0.5% conv.
metal engine model kit7K/yr +5.3%0.2% conv.
vortrixe model engine4K/yr +32.9%0.1% conv.
engine model kit9K/yr +32.4%0.8% conv.
mini engine9K/yr -9.3%0.0% conv.

All search terms

Top engine products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Machine Works Build Your Own V8 Engine Toy - Replica Model Building Kit - Features Augmented Reality Sounds and Illumination 4 Modes 250+ Pieces 10+ Years

Machine Works£41.154.3★1,964 rev

Reobrix V8 Engine Model Kit for Adults Mechanical Car Engine Building Set

Reobrix£41.934.3★67 rev

V8 Engine Model Kit 535 PCS Build Your Own Mini Working Engine Educational 8-Cylinder Petrol Car Engine Replica Creative Gift Building Kit for Teens Adults Boys Girls 14 Plus

Bathgate£31.974.2★30 rev

Mould King V8 Engine Building Blocks Sets 10171 MOC Scale Model Kit with Battery and Motor Collectible Set for Adults Construction Toys for Teens(487 Pcs)

Mould King£38.164.5★97 rev

Nifeliz V8 Engine Building Set Exclusive Advanced Collectors Engine Model to Build Physical Science Experiment Toy for Adults Home or Office Décor Collectible Gifts (2725 PCS NF10287)

Nifeliz£97.754.3★312 rev

Newest

by launch date

Twin Turbo V8 Engine Model Kit that Runs 548PCS Build Your Own Mini V8 Engine Building Set with Motor STEM Science Experiment Toy & Home Office Decor for Kids 8+ & Adults

Generic£30.351 rev

3mo ago

MOCBURIKU V8 Engine Building Kit that Runs with Motor and Battery Powered

MOCBURIKU£41.5355 rev

4mo ago

V8 Engine Building Set V8 Engine Model kit That Run Build Your Own Mini V8 Model Engine Kit with Motor Home or Office Décor STEM Physical Science Experiment Toy for Kids 8+ and Adults(538PCS)

Generic£29.341 rev

5mo ago

JMBricklayer 3in1 Mini Engine Building Toy Model Adults Kits that Runs V8 V12 W16 Car Engine STEM Brick Toy Home Office Decor Collectible Technical Engineering Gifts for Teens 14+ Car Lovers

JMBricklayer£27.3551 rev

6mo ago

V8 Engine Model Kit That Runs Visible Mini Car Motor Building Set for Adults & Teens Compatible with Lego STEM Physical Science Educational Toy for Boys 14+ (905 PCS)

QGGQ£42.929 rev

7mo ago

What buyers say about engine

What buyers praise and complain about, mined from review topics.

What buyers love

Design-Overall19%

“Fabulous well designed”

Quality-Overall14%

“Good quality”

Fun/Entertainment Experience10%

“Good fun to build”

Instructions/User Manual/Troubleshooting8%

“instructions were clear”

Assembly/Installation8%

“What really makes this kit stand out is how satisfying the assembly process is”

Value For Money6%

“Good for the price”

Gifting Purpose5%

“Bought as gift”

Size-Overall3%

“The pieces fit well”

Correct Contents2%

“Correctly numbered bags”

Ease Of Use2%

“easy to follow”

What buyers complain about

Assembly/Installation16%

“It took some time to assemble”

Instructions/User Manual/Troubleshooting14%

“found the instruction booklet was very poor”

Defective Material/Parts7%

“A few parts missing”

Quality-Overall7%

“this was mistake the brick are poor quality”

Size-Overall5%

“The fit just wasn't what I'm used to”

Value For Money3%

“It's expensive,”

Functionality-Overall2%

“Not working”

Durability2%

“the motor burnt out within a minute of switching it on”

Gifting Purpose2%

“Sorry I can't really say it's been bought for a Christmas present”

Leak-Proof2%

“now got air leak from bottom gasket”

Top return reasons

Defective Material/Parts47%

Quality-Overall8%

Instructions/User Manual/Troubleshooting6%

Material Quality5%

Gifting Purpose5%

Functionality-Overall5%

Assembly/Installation5%

Battery Inclusion5%