---
title: "Trend — engine catalytic converter cleaner - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/engine-catalytic-converter-cleaner/trend"
last_updated: "2026-08-10T23:47:23.083Z"
locale: en
meta:
  description: "Niche score 49/100 · $21K/yr market · 45K searches/yr · $18.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 49/100 · $21K/yr market · 45K searches/yr · $18.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Trend — engine catalytic converter cleaner - Flapen"
---

# **engine catalytic converter cleaner**

**Skip it**

Soft demand (-76.1% this quarter) — this niche doesn't clear our bar today.

Market size 5Growth 0Conversion 33Competition 50Returns 97Price range 86Avg price 83Brand share 77Review moat 53Quality gap 88

**Returns**

**Incredible****0.5%**

return rate — above 5% kills the launch gate

**Quality gap**

**Great****4.1★**

avg incumbent rating — lower means beatable quality

**Price range**

**Great****$10.85–$46.47**

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

**Avg price**

**Great****$18.01**

avg listing price — sweet spot $15–$100

**Brand share**

**Great****58%**

top-5 brand share — no brand owns this niche

**Review moat**

**Good****1,384**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Good****55%**

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

**Conversion**

**Okay****2.6%**

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

**Market size**

**Bad****$21K**

$21K/yr · 45K searches

**Growth**

**Bad****-76.1%**

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

**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")

## Trend