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53

g12 coolant

Worth a look

Shows low returns (0.2%), but strong incumbent ratings (4.7★) keeps it on the watch list.

Market size 67Growth 32Conversion 93Competition 21Returns 99Price range 76Avg price 95Brand share 25Review moat 68Quality gap 17

Returns

Incredible0.2%

return rate — above 6% kills the launch gate

Avg price

Incredible£33.37

avg listing price — sweet spot $15–$100

Conversion

Great11.4%

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

Price range

Great£4.75–£115.97

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

Review moat

Good792.8

avg incumbent reviews — the moat a new listing must climb

Market size

Good£658K

£658K/yr · 173K searches

Growth

Okay+5.5%

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

Brand share

Okay90%

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

Competition

Bad75%

top-5 click share — a locked-up shelf

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United Kingdom niche tracking, g12 coolant is a £658K/yr Amazon United Kingdom market (173K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Nov. Verdict: Worth a look — 53/100.

Data updated Jul 18, 2026 · scored weekly · How we score niches

Market data

Units sold / yr
15K–20K
avg 1,500–2,000/product
Revenue / yr
£501K–£667K
units × avg price
Launch success
0 of 0 new (360d)
Conversion rate
11.4%
Avg BSR
#53
Page quality
0%
Prime
50%
Sponsored
60%
Out of stock
0.0%
Avg brand age
76 months
Avg seller age
182 days

Competition

The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 falling

Sellers

26

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

75%

Top 20: 100%

Open market

2%

  • Volkswagen35%
  • Grivel23%
  • JOVS13%
  • MANNOL10%
  • DYNAMAX9%
  • COX MOTOR PARTS8%
  • Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +5.5% search growth over the last 90 days.
5K3KBlack Friday '24Spike '25Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Nov · busiest ÷ quietest = 1.4×

Product shelf

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

0%10%£66K20%£132K30%£197K40%£263K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 10 tracked products in this niche — three views at once, no toggling.

Reviews

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

What buyers love

Value For Money26%

“Great value for money”

Quality-Overall25%

“Top quality brand for VW at a great price”

Coolant20%

“Coolant Antifreeze”

Advertised Vs Actual Product16%

“Just as advertised”

Ease Of Use6%

“Easy to use”

Efficiency1%

“Good for the car”

Size-Overall1%

“Good size”

Paint Quality1%

“Paint”

Durability0%

“lasts longer”

Motor Power0%

“Happy motoring”

What buyers complain about

Quality-Overall39%

“Cheap”

Coolant11%

“I was buying these regularly last year because I had a coolant leak that my previous mechanic insisted would be a major, expensive job”

Leak-Proof11%

“Potential to leak”

Value For Money6%

“Although cheaper in my local supermarket”

Heating6%

“Car not hot”

Instructions/User Manual/Troubleshooting6%

“Marking down one star for the terrible photocopy instructions on the bottle”

Top return reasons

Coolant28%
Compatibility-Overall24%
Leak-Proof10%
Color9%
Defective Material/Parts8%
Value For Money5%
Advertised Vs Actual Product4%
Quality-Overall3%
Functionality-Overall2%
Size-Overall1%

Common questions

Is g12 coolant profitable to sell on Amazon United Kingdom?
The niche generates £658K/yr across 10 tracked products. 90-day search growth is +5.5%. Flapen's verdict: Worth a look (53/100).
How competitive is the g12 coolant niche?
7 brands and 26 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 90% of demand.
What do buyers complain about in g12 coolant?
Top complaints mined from reviews: Quality-Overall, Coolant, Leak-Proof. The return rate is 0.2%.
When does demand for g12 coolant peak?
Demand peaks in Nov; the busiest month runs 1.4× the quietest.
What does it cost to enter the g12 coolant niche?
Listings span £4.75–£115.97; the average listing price is £33.37 (sweet spot $15–$100). The average incumbent carries 793 reviews — the moat a new listing must climb.

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