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51

5w40

Worth a look

Shows low returns (0.5%), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.

Market size 63Growth 39Conversion 47Competition 51Returns 98Price range 83Avg price 95Brand share 9Review moat 40Quality gap 15

Returns

Incredible0.5%

return rate — above 5% kills the launch gate

Avg price

Incredible€26.27

avg listing price — sweet spot $15–$100

Price range

Great€6.53–€62.12

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

Market size

Good€572K

€572K/yr · 578K searches

Competition

Good55%

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

Conversion

Okay3.8%

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

Review moat

Okay2,524.27

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+11.0%

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

Quality gap

Bad4.8★

avg incumbent rating — lower means beatable quality

Brand share

Bad96%

top-5 brand share — brand-locked demand

According to Flapen's Amazon Germany niche tracking, 5w40 is a €572K/yr Amazon Germany market (578K searches/yr). The top 5 brands hold 96% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 6, 2026 · scored weekly · How we score niches

5w40 market data

Units sold / yr
30K–40K
avg 1,250–1,500/product
Revenue / yr
€788K–€1.1M
units × avg price
Conversion rate
3.8%
Avg BSR
#95
Page quality
0%
Prime
86%
Sponsored
82%
Out of stock
0.0%
Avg brand age
98 months
Avg seller age
183 days

Competition & brand share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 rising

Sellers

78

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

55%

Top 20: 98%

Open market

2%

  • Liqui Moly46%
  • MANNOL27%
  • Castrol17%
  • Mobil5%
  • ecanis1%
  • Mobil Super1%
  • Open — no brand owns it (2 brands, 2%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +11.0% search growth over the last 90 days.
15K10KPrime Day '24Spike '24Prime Day '25Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Top 5w40 search terms

  • 5w40141K/yr
  • motoröl 5w40112K/yr
  • 5w40 motoröl 5l72K/yr
  • liqui moly 5w4044K/yr
  • mannol 5w4032K/yr
  • castrol 5w4029K/yr
  • öl 5w4020K/yr
  • 5w 40 motoröl16K/yr
  • 5w40 motoröl15K/yr
  • 5w40 liqui moly13K/yr
All search terms

Top 5w40 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.

0%5%€29K10%€57K15%€86K20%€114K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 22 tracked products in this niche — three views at once, no toggling.

What buyers say about 5w40

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

What buyers love

Qualität insgesamt27%

“Super Produkt”

Schmierung22%

“Super Top Motoröl”

Preis-Leistungs-Verhältnis20%

“Preis Leistung super”

beworben Vs Tatsächliches Produkt8%

“Das Produkt entspricht der Beschreibung”

Treibstoffeffizienz7%

“400 Ps kein Problem”

Motorleistung7%

“Motoröl”

Gesamtgröße4%

“Passt alles”

Weiches Gefühl1%

“Gut geschmiert”

Einfache Reinigung1%

“EXZELLENTE REINIGUNGSWIRKUNG”

Benutzerfreundlichkeit1%

“Praktischer Kanister”

What buyers complain about

Preis-Leistungs-Verhältnis23%

“teuer also andere”

Schmierung16%

“Es ist bestimmt kein High Performance Öl”

Motorische Probleme10%

“Motoröl 5w30. Kauf ich immer bei Amazon, sehr günstig”

Auslaufsicher10%

“Läuft aus”

Sicherheitsstandards7%

“Hält nicht die Normen”

Qualität insgesamt7%

“Kanister mit Mangelnder Qualität”

Farbe7%

“nach rund 5000km war es schwarz”

Benutzerfreundlichkeit3%

“Unhandlich”

Treibstoffeffizienz2%

“Der Kraftstoffverbrauch ist leicht gestiegen”

Top return reasons

Kompatibilität – insgesamt33%
Gesamtgröße27%
Zertifizierungen8%
Auslaufsicher5%
beworben Vs Tatsächliches Produkt5%
Funktionalität insgesamt4%
Schmierung4%
Defekt Material/Teile2%
Qualität insgesamt2%
Treibstoffeffizienz2%

Common questions

Is 5w40 profitable to sell on Amazon Germany?
The niche generates €572K/yr across 22 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +11.0%. Flapen's verdict: Worth a look (51/100).
How competitive is the 5w40 niche?
8 brands and 78 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 96% of demand.
What do buyers complain about in 5w40?
Top complaints mined from reviews: Preis-Leistungs-Verhältnis, Schmierung, Motorische Probleme. The return rate is 0.5%.
When does demand for 5w40 peak?
Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the 5w40 niche?
Listings span €6.53–€62.12; the average listing price is €26.27 (sweet spot $15–$100). The average incumbent carries 2,524 reviews — the moat a new listing must climb.