Amazon, edited by the author. Amazon is consistently a great source for four particular types of car-related items: Tire inflators, battery chargers, OBD scanners, and cleaning products. With Amazon Prime Day live from today to June 26, now is your time to pounce. Here are our picks for automotive onboard diagnostic/OBD2 scanners you can get a great deal on right now. For serious work and comprehensive scanning, the Topdon One (21% off for Prime Day) is extremely powerful and capable. Access dealer-level diagnostic tools with a huge color interface. List price is $889, grab one for $699 this week. My favorite iPhone and Android-pairable OBD2 scanner, the BlueDriver Pro Next Gen (42% off for Prime Day), is also on sale and an absolutely screaming deal at $74.94. I have the previous iteration of this, and it’s great. It’s super small and robust, easily pairs with my phone, and gives me lots of information when I get a trouble code. It’s great for going a step beyond simply getting the code number, it actually helps with diagnosis, too. If you’re looking for a simple, low-cost, self-contained scanner that packs a high level of functionality into a compact device, check out the Foxwell NT301 (20% off for Prime Day). At $55.99 on sale, it’s significantly more capable than the cheapo OBD scanners you’ll find for less at an auto parts store. The Foxwell brand has been recommended to me by some independent BMW specialists I buy stuff from; I pick it over the many other similar-level options with confidence.