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15w40

Skip it41/100

a small market ($203K/yr) — 15w40 doesn't clear our bar today.

Market/yr

€203K

Growth (1y)

+123.5%

Products

14

Brands

5

was 5 a year ago

Sellers

60

Price range

€5.89–€55.05

Returns

0.3%

Rating

4.8★

41/100

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Scored 41/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
10
×0.30
Growth
68
×0.30
Competition
30
×0.20
Quality gap
20
×0.10
Returns
98
×0.10

Demand

Weekly Amazon search volume, last 104 weeks — +123.5% year over year.
3K1KPrime Day '24Spike '24Spike '25Prime Day '25Spike '26Jul '24Nov '24Mar '25Jun '25Oct '25Feb '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: Mar, Apr · busiest ÷ quietest = 1.9×

Competition

51%MANNOL
  • MANNOL51%
  • Liqui Moly32%
  • MATHY9%
  • Mobil5%
  • Castrol3%

The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them. 5 brands and 60 sellers compete here.

Brands

5 flat

was 5 a year ago

Sellers

60

Top 5 brand share

100%

#ProductBrandPriceRatingReviewsClick shareTrend
2MANNOL€27.074.8★1,24616%flat
3MANNOL€25.674.7★2,04311%falling
4MANNOL€55.054.8★1,2469%rising
6Mobil€5.894.7★1955%flat
7MANNOL€18.764.7★2,0435%rising
9MANNOL€15.864.8★1,2464%falling
11Castrol€23.584.8★2463%flat
13MANNOL€14.094.8★4,2862%falling
14MANNOL€54.774.7★2,0431%falling

Product shelf

All 14 tracked products in this niche.

Reviews

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

What buyers love

Qualität insgesamt32%

“Top Qualität”

Preis-Leistungs-Verhältnis20%

“Preis/Leistung Top”

beworben Vs Tatsächliches Produkt18%

“Alles so wie es sein soll”

Schmierung15%

“bestes Oil”

Motorleistung8%

“Top Motoröl”

Haltbarkeit2%

“Alles gut gelaufen”

Gesamtgröße2%

“Passt alles”

Treibstoffeffizienz2%

“Man braucht keine teuren Öle mit Additiven da der Motor vom Stromgenerator sehr einfach gebaut ist”

What buyers complain about

Dicke27%

“Zu dünn”

Qualität insgesamt20%

“mein Gott es ist Öl was will man da schon falsch machen bzw was will man hier groß über die Qualität reden.”

Schmierung20%

“Motorenöl halt”

Preis-Leistungs-Verhältnis10%

“Ist die Preisersparnis nicht wert”

Top return reasons

  • Kompatibilität – insgesamt26%
  • Gesamtgröße24%
  • Auslaufsicher18%
  • Schmierung9%
  • beworben Vs Tatsächliches Produkt6%
  • Haltbarkeit3%
  • Zertifizierungen3%
  • Preis-Leistungs-Verhältnis3%
  • Funktionalität insgesamt3%
  • Wasserbeständigkeit3%

Data scraped July 6, 2026 · Marketplace baseline: 4.4★ avg rating · €18.85 median price · 1.1% median returns across 7,145 tracked niches.