elm327
Worth a lookShows a sweet-spot price point ($27.01 avg), but a deep review moat (8,506 avg reviews) keeps it on the watch list.
Avg price
Incredible$27.01avg listing price — sweet spot $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Price range
Good$5.54–$136.17cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good68%top-5 brand share — brands hold most of the demand
Conversion
Good5.0%search→purchase rate — share of searches ending in a sale
Market size
Okay$255K$255K/yr · 188K searches
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Returns
Okay5.0%return rate — above 6% kills the launch gate
Growth
Okay+1.9%90-day search growth — must beat 0% to launch
Review moat
Bad8,505.76avg incumbent reviews — the moat a new listing must climb
Competition
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%
Open market
25%
- KVAEY19%
- Veepeak14%
- OBDResource13%
- ULTRAOBD12%
- ViaBecs12%
- MOCATEC7%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$7.123.6★293 rev
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$18.834.4★6,872 rev
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$14.864.0★202 rev
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$16.094.2★156 rev
Veepeak OBDCheck BLE Bluetooth OBD II Scanner for iOS & Android Car Wireless Check Engine Light Code Reader Diagnostic Tool
Veepeak$30.674.5★23,782 rev
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$5.549 rev
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$7.2734 rev
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$8.10131 rev
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$7.12293 rev
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$18.7575 rev
Trending
90-day click momentumBWBWND 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$7.273.9★
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$5.544.0★
Vgate iCar Pro Bluetooth 4.0 (BLE) OBD2 Fault Code Reader OBDII Code Scanner Car Check Engine Light for iOS/Android
Vgate$30.904.6★
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$14.864.0★
Panlong OBD2 Scanner Bluetooth OBDII Diagnostic Tool Car Code Reader Turn Off Check Engine Light Support Android
Panlong$13.634.3★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +1.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to read”
“Fair price”
“As advertised”
“Definitely a great product to have on hand”
“Works flawlessly”
“connectivity is awesome”
“It reads and clears codes quickly and is a great basic tool to have for checking your car”
“functional”
“provides accurate readings”
“I am very happy with this setup”
What buyers complain about
“Won't connect”
“Did not work”
“Compatibility issues”
“Poor quality”
“not a cheaper one”
“Good device; Poor manual”
“No software updates”
“breaks easily”
“some ridiculous sensors”
“not a friendly user”