I just bought a Bluetooth OBD II scanner on Amazon. It had 11,500 reviews with 74% of them 5 starts. Later I read an article about fake reviews on Amazon and Walmart becoming a big problem. The article mentioned a web site that analyzes reviews and grades the them as to their trustworthiness. All you do is enter the URL of the product page on Amazon (and probably other retailers) and the site will tell you how reliable the reviews are. Wish I'd known about it befor I bought the scanner. The reviews for the Amazon OBD II scanner I bought received a C grade. Here's the review analysis site: https://www.fakespot.com/ Here the article about fake reviews: https://www.cbsnews.com/news/buyer-beware-a-scourge-of-fake-online-reviews-is-hitting-amazon-walmart-and-other-major-retailers/ Tim
The BAFX Products Bluetooth Diagnostic OBDII Reader/Scanner for Android Devices but I haven't received it yet.
Thanks for the heads up! I know about paid reviews and suspected lots of fake reviews (both positive from the manufacturer and negative from the competition), but it's interesting and useful to have a site just for reporting on fakes.