Is engine cleaner profitable to sell on Amazon United States?

The niche generates $1.1M/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +13.8%. Flapen's verdict: Launch it (58/100).

How competitive is the engine cleaner niche?

9 brands and 103 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 82% of demand.

What do buyers complain about in engine cleaner?

Top complaints mined from reviews: Functionality-Overall, Ease Of Cleaning, Stain Resistance. The return rate is 0.4%.

When does demand for engine cleaner peak?

Demand is steady year-round — the busiest month runs 1.8× the quietest.

What does it cost to enter the engine cleaner niche?

Listings span $5.01–$66.88; the average listing price is $22.31 (sweet spot $15–$100). The average incumbent carries 2,560 reviews — the moat a new listing must climb.

engine cleaner

Launch it

A $1.1M/yr market growing +13.8% this quarter with returns at 0.4% — clears our launch bar.

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Avg price

Great$22.31

avg listing price — sweet spot $15–$100

Price range

Great$5.01–$66.88

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

Market size

Great$1.1M

$1.1M/yr · 738K searches

Conversion

Good6.6%

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

Growth

Okay+13.8%

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

Review moat

Okay2,560.17

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay82%

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

Competition

Okay64%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, engine cleaner is a $1.1M/yr Amazon United States market (738K searches/yr). The top 5 brands hold 82% of demand. Verdict: Launch it — 58/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

engine cleaner market data

Units sold / yr: 40K–50K; avg 1,500–2,000/product
Revenue / yr: $892K–$1.1M; units × avg price
Conversion rate: 6.6%
Avg BSR: #41
Page quality: 0%
Prime: 78%
Sponsored: 61%
Out of stock: 0.0%
Avg brand age: 75 months
Avg seller age: 141 days

Competition & brand share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 falling

Sellers

103

Top-5 brand share

82%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

11%

Chemical Guys31%
Zep22%
Gunk12%
3D9%
WD-40 Specialist7%
KRAKEN BOND7%
Open — no brand owns it (3 brands, 11%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +13.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.8×

Open Trend

Top engine cleaner search terms

engine degreaser174K/yr +15.6%7.7% conv.
engine cleaner147K/yr +14.3%3.4% conv.
engine bay cleaner64K/yr +2.9%3.9% conv.
degreaser automotive55K/yr +11.4%6.9% conv.
gunk engine degreaser41K/yr +36.1%5.2% conv.
engine degreaser heavy duty40K/yr +7.7%8.1% conv.
desengrasante para motor de carro34K/yr -26.6%2.5% conv.
engine cleaner spray28K/yr +1.8%4.5% conv.
car engine cleaner29K/yr +7.4%2.4% conv.
industrial degreaser15K/yr +29.0%2.6% conv.

All search terms

Top engine cleaner 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 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Chemical Guys Signature Series Orange Degreaser Spray - Heavy Duty All Purpose Cleaner for Engines Tires Undercarriages Tools and More Professional Strength Breaks Down Grease Oil & Grime 16 oz

Chemical Guys$11.334.6★7,682 rev

Zep Cherry Bomb Auto+ Degreaser & Cleaner - For Auto Marine RV & Home - 1 Gallon

Zep$11.324.6★442 rev

3D Grand Blast Engine Degreaser Heavy Duty Biodegradable Cleaner for Engines Wheels Exhausts & More Fast-Acting Non-Staining Made in USA 1 Gallon

3D$34.124.5★1,013 rev

Zep Cherry Bomb Auto+ Degreaser & Cleaner - For Auto Marine RV & Home - 32 oz.

Zep$6.324.5★370 rev

KRAKEN BOND Engine Cleaner Spray - (2x12.3 fl. Oz) Engine Degreaser for Engine Bay Gunk and Motor | 2 Pack

KRAKEN BOND$16.614.5★560 rev

Newest

by launch date

Gunk Engine Degreaser Original Degreaser Cleaner Spray Quickly Removes Tough Oil & Grease Cleans Hardworking Engines Rinses Easily with Water 15 oz (Case of 6)

Gunk$29.22203 rev

10mo ago

Zep Cherry Bomb Auto+ Degreaser & Cleaner - For Auto Marine RV & Home - 1 Gallon

Zep$11.32442 rev

1y ago

Zep Cherry Bomb Auto+ Degreaser & Cleaner - For Auto Marine RV & Home - 32 oz.

Zep$6.32370 rev

1y ago

CRC 05483 Heavy Duty Pro-Strength Degreaser 20 Wt Oz [1 Pack]

CRC$10.06470 rev

2y ago

KRAKEN BOND Engine Cleaner Spray - (2x12.3 fl. Oz) Engine Degreaser for Engine Bay Gunk and Motor | 2 Pack

KRAKEN BOND$16.61560 rev

3y ago

What buyers say about engine cleaner

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

What buyers love

Ease Of Cleaning25%

“It cleans well”

Quality-Overall15%

“Better than average”

Efficiency11%

“Works well”

Smell10%

“Good smell”

Value For Money6%

“Good price”

Advertised Vs Actual Product5%

“Works as advertised”

Strength3%

“Heavy duty”

Ease Of Use3%

“Easy to use”

Color2%

“Simple green is just the best”

Spray/Flow2%

“Awesome spray”

What buyers complain about

Functionality-Overall17%

“This product does not work well”

Ease Of Cleaning12%

“this was on a worst case kind of mess”

Stain Resistance10%

“Also, may not take out the stain completely”

Strength8%

“Pretty weak stuff”

Leak-Proof7%

“the bottle leaks”

Smell6%

“Smells gross”

Value For Money5%

“waste of MONEY”

Quality-Overall3%

“not very good”

Spray/Flow2%

“Dripped and leaked while spraying”

Instructions/User Manual/Troubleshooting2%

“Totally did not follow delivery instructions”

Top return reasons

Leak-Proof23%

Functionality-Overall19%

Advertised Vs Actual Product13%

Value For Money9%

Stain Resistance6%

Wet Cleaning4%

Spray/Flow3%

Size-Overall2%

Defective Material/Parts2%

Ease Of Cleaning2%

Common questions

Is engine cleaner profitable to sell on Amazon United States?: The niche generates $1.1M/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +13.8%. Flapen's verdict: Launch it (58/100).
How competitive is the engine cleaner niche?: 9 brands and 103 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 82% of demand.
What do buyers complain about in engine cleaner?: Top complaints mined from reviews: Functionality-Overall, Ease Of Cleaning, Stain Resistance. The return rate is 0.4%.
When does demand for engine cleaner peak?: Demand is steady year-round — the busiest month runs 1.8× the quietest.
What does it cost to enter the engine cleaner niche?: Listings span $5.01–$66.88; the average listing price is $22.31 (sweet spot $15–$100). The average incumbent carries 2,560 reviews — the moat a new listing must climb.