---
title: "Elm327 — $255K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/elm327"
last_updated: "2026-08-10T19:08:00.468Z"
locale: en
meta:
description: "Niche score 49/100 · $255K/yr market · 188K searches/yr · $27.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $255K/yr market · 188K searches/yr · $27.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Elm327 — $255K/yr Amazon US Niche (2026) - Flapen"
---
# **elm327**
**Skip it**
A deep review moat (8,506 avg reviews) — this niche doesn't clear our bar today.
Market size 47Growth 27Conversion 59Competition 41Returns 25Price range 65Avg price 95Brand share 61Review moat 23Quality gap 79
**Avg price**
**Incredible****$27.01**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$5.54–$136.17**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Good****5.0%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****$255K**
$255K/yr · 188K searches
**Competition**
**Okay****60%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+1.9%**
90-day search growth — must beat 0% to launch
**Returns**
**Okay****5.0%**
return rate — above 5% kills the launch gate
**Review moat**
**Bad****8,505.76**
avg incumbent reviews — the moat a new listing must climb
**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")
According to Flapen's Amazon United States niche tracking, elm327 is a $255K/yr Amazon United States market (188K searches/yr). The top 5 brands hold 68% of demand. Verdict: Skip it — 49/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **elm327 market data**
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **$216K–$270K**
- units × avg price
- **Conversion rate**
- **5.0%**
- **Avg BSR**
- **#200**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **71%**
- **Out of stock**
- **1.2%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **160 days**
## **Competition & brand share**
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**23**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**60%**
Top 20: 99%
**Open market**
**25%**
- KVAEY19% - Veepeak14% - OBDResource13% - ULTRAOBD12% - ViaBecs12% - MOCATEC7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +1.9% search growth over the last 90 days.
5K4KPrime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/automotive/elm327/trend)
## **Top elm327 search terms**
- **elm327**81K/yr+0.8%4.0% conv. - **elm327 bluetooth obd2**23K/yr-10.5%4.6% conv. - **elm327 bluetooth**16K/yr+24.3%3.6% conv. - **elm 327 obd2 scanner bluetooth**18K/yr-7.5%5.7% conv. - **elm 327**16K/yr+5.7%4.0% conv. - **elm327 obd2**11K/yr+13.4%2.4% conv. - **elm327 adapter**5K/yr+43.5%2.9% conv. - **elm327 bluetooth obd2 scanner**4K/yr+22.2%5.7% conv. - **elm obd2**3K/yr+7.5%3.8% conv. - **elm 327 bluetooth**4K/yr-14.3%4.1% conv. [**All search terms **](https://flapen.com/research/us/automotive/elm327/search-terms)
## **Top elm327 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%$13K10%$25K15%$38K20%$51K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**KVAEY OBDII Car Auto Diagnostic Scanner ELM327 Automotive Bluetooth Scan Tool and Code Reader Professional Car Bluetooth Engine Fault Code Reader Universal Car Accessories (1 PCS)**KVAEY**$7.12**3.6★293 rev](https://www.amazon.com/dp/B0DKN9VL8Y) [2**ELM327 USB Adapter OBD2 Scanner for Windows ELMconfig FoCCCus Diagnostic Scan Tool with MS-Can/HS-Can Switch for Ford Lincoln Mazda Mercury Series Vehicles**OBDResource**$18.83**4.4★6,872 rev](https://www.amazon.com/dp/B07MQ8GHG3) [3**ViaBecs OBD2 Scanner Bluetooth 5.1 Adapter for iPhone & Android OBDII Car Diagnostic Code Reader for 12V Gas Cars Check Engine Light Reader with Live Data VIN RPM Coolant Temp YMOBD App**ViaBecs**$14.86**4.0★202 rev](https://www.amazon.com/dp/B0CCYKZ8YF) [4**WiFi ELM327 OBD2 Adapter Scanner Reader for iOS iPhone and Android Phones OBD2 to WiFi OBD 2 ELM 327 Adapter Scanner Diagnostic Scan Tools OBDii ELM327 Interface Code Readers for Ford GM Chevy etc**ULTRAOBD**$16.09**4.2★156 rev](https://www.amazon.com/dp/B0CZF3MHVS) [5**Veepeak OBDCheck BLE Bluetooth OBD II Scanner for iOS & Android Car Wireless Check Engine Light Code Reader Diagnostic Tool**Veepeak**$30.67**4.5★23,782 rev](https://www.amazon.com/dp/B073XKQQQW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**VCYOPN ELM327 OBD Car Auto Diagnostic Scanner Professional Auto Bluetooth Scan Tool Engine Fault Code Reader Portable Vehicle Interface Adapter Check Engine Light Code Reader**VCYOPN**$5.54**9 rev8mo ago](https://www.amazon.com/dp/B0FZTVV2SW) [**BWBWND 2 PCS ELM327 OBDII Car Auto Diagnostic Scanner Professional Mini Bluetooth Scan Tool Engine Fault Code Reader Wireless Failure Detector Interface Adapter for Most OBD II Vehicles**BWBWND**$7.27**34 rev1y ago](https://www.amazon.com/dp/B0FD2VM973) [**NYTKL 2 PCS ELM327 OBDII Car Auto Diagnostic Scanner Professional Wireless Bluetooth Scan Tool Failure Detector OBD2 Engine Fault Code Reader for Android Windows Car Accessories**NYTKL**$8.10**131 rev1y ago](https://www.amazon.com/dp/B0F62PFRZ7) [**KVAEY OBDII Car Auto Diagnostic Scanner ELM327 Automotive Bluetooth Scan Tool and Code Reader Professional Car Bluetooth Engine Fault Code Reader Universal Car Accessories (1 PCS)**KVAEY**$7.12**293 rev1y ago](https://www.amazon.com/dp/B0DKN9VL8Y) [**USB OBD2 ELM327 Scanner Reader for Windows Laptop PC ELMconfig FoCCCus Diagnostic Scan Tool with HS-Can (Up) /(Down) MS-Can Switch for Ford Mazda Chevy Lincoln Series Vehicles**ULTRAOBD**$18.75**75 rev2y ago](https://www.amazon.com/dp/B0CZF416R5)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BWBWND 2 PCS ELM327 OBDII Car Auto Diagnostic Scanner Professional Mini Bluetooth Scan Tool Engine Fault Code Reader Wireless Failure Detector Interface Adapter for Most OBD II Vehicles**BWBWND**$7.27**3.9★**▲ 186%**](https://www.amazon.com/dp/B0FD2VM973) [**VCYOPN ELM327 OBD Car Auto Diagnostic Scanner Professional Auto Bluetooth Scan Tool Engine Fault Code Reader Portable Vehicle Interface Adapter Check Engine Light Code Reader**VCYOPN**$5.54**4.0★**▲ 173%**](https://www.amazon.com/dp/B0FZTVV2SW) [**Vgate iCar Pro Bluetooth 4.0 (BLE) OBD2 Fault Code Reader OBDII Code Scanner Car Check Engine Light for iOS/Android**Vgate**$30.90**4.6★**▲ 39%**](https://www.amazon.com/dp/B06XGB4873) [**ViaBecs OBD2 Scanner Bluetooth 5.1 Adapter for iPhone & Android OBDII Car Diagnostic Code Reader for 12V Gas Cars Check Engine Light Reader with Live Data VIN RPM Coolant Temp YMOBD App**ViaBecs**$14.86**4.0★**▲ 29%**](https://www.amazon.com/dp/B0CCYKZ8YF) [**Panlong OBD2 Scanner Bluetooth OBDII Diagnostic Tool Car Code Reader Turn Off Check Engine Light Support Android**Panlong**$13.63**4.3★**▲ 29%**](https://www.amazon.com/dp/B00PJPHEBO)
**~~View all trending →~~**
## **What buyers say about elm327**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**22%
*“Easy to read”*
**Value For Money**18%
*“Fair price”*
**Advertised Vs Actual Product**14%
*“As advertised”*
**Quality-Overall**12%
*“Definitely a great product to have on hand”*
**Efficiency**11%
*“Works flawlessly”*
**Connectivity-Overall**5%
*“connectivity is awesome”*
**Instructions/User Manual/Troubleshooting**3%
*“It reads and clears codes quickly and is a great basic tool to have for checking your car”*
**Functionality-Overall**2%
*“functional”*
**Measurement/Reading Accuracy**1%
*“provides accurate readings”*
**Assembly/Installation**1%
*“I am very happy with this setup”*
### **What buyers complain about **
**Connectivity-Overall**19%
*“Won't connect”*
**Functionality-Overall**16%
*“Did not work”*
**Compatibility-Overall**13%
*“Compatibility issues”*
**Quality-Overall**7%
*“Poor quality”*
**Value For Money**5%
*“not a cheaper one”*
**Instructions/User Manual/Troubleshooting**5%
*“Good device; Poor manual”*
**Software/Application**5%
*“No software updates”*
**Durability**4%
*“breaks easily”*
**Sensor**2%
*“some ridiculous sensors”*
**Ease Of Use**2%
*“not a friendly user”*
### **Top return reasons **
**Compatibility-Overall**31%
**Functionality-Overall**24%
**Connectivity-Overall**21%
**Value For Money**5%
**Software/Application**5%
**Advertised Vs Actual Product**4%
**Size-Overall**2%
**Defective Material/Parts**2%
**Ease Of Use**1%
**Instructions/User Manual/Troubleshooting**1%
## **Common questions**
- **Is elm327 profitable to sell on Amazon United States?**
- The niche generates $255K/yr across 21 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +1.9%. Flapen's verdict: Skip it (49/100).
- **How competitive is the elm327 niche?**
- 17 brands and 23 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in elm327?**
- Top complaints mined from reviews: Connectivity-Overall, Functionality-Overall, Compatibility-Overall. The return rate is 5.0%.
- **When does demand for elm327 peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the elm327 niche?**
- Listings span $5.54–$136.17; the average listing price is $27.01 (sweet spot $15–$100). The average incumbent carries 8,506 reviews — the moat a new listing must climb.
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