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5w40

5w40 shows low returns (0.5%), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.

Flapen Score

51
Worth a look

Ranks 671 of 1,428 Auto & Motorrad niches · on the category median

Market size 63Growth 39Conversion 47Competition 51Returns 98Price range 83Avg price 95Brand share 9Review moat 40Quality gap 15
This niche Category average · 1,428 niches

Is 5w40 profitable on Amazon?

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.

5w40: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved +11.0% over the last 90 days and 3.8% of searches end in a purchase.

€572K

revenue / yr

Units sold / yr40K
Search volume / yr+11.0%578K
Conversion rate3.8%
Avg price€26.27

Who owns the niche?

The top 5 brands hold 96% of demand, so 4% of the market is open.

4%

open market share

Brands · sellers8 · 78
Top-5 product click share55%
Open market4%
Avg brand age98 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.8★ — the gap to enter on.

0/100

page quality · 22 products

Sponsored placement82%
New entrants (1y)1· 0 succeeded
Avg rating4.8★
Avg reviews2,524

Top 5w40 products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

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

€0€29K€57K€86K€114K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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%)

5w40 demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume578KCVR3.8%Products22Brands8Top 5 Brands96%OOS Rate0.0%Rating4.8★Reviews2,524Avg BSR#95
15K10KPrime Day '24Spike '24Prime Day '25Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Top 5w40 search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • 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

What reviews say buyers love and hate about 5w40

What buyers mention most, as a share of all reviews.

What buyers love

96% of reviews
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

What buyers complain about

84% of reviews
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

5w40 return rate & reasons

Why buyers send it back, as a share of all return requests.

0.5%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Kompatibilität – insgesamt
33%
2Gesamtgröße
27%
3Zertifizierungen
8%
4Auslaufsicher
5%
5beworben Vs Tatsächliches Produkt
5%

Common 5w40 questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores 5w40 51/100 on Amazon Germany — Worth a look. The niche generates €572K/yr across 22 tracked products. 0 of 1 products launched in the last 360 days are still selling. Search demand moved +11.0% over the last 90 days.
Search demand for 5w40 on Amazon Germany is steady year-round — the busiest month runs 1.3× the quietest.