About Cars Diagnostic Tool
Cars Diagnostic Tool is an independent buying-guide site about car diagnostic tools. We help you pick a scanner that fits your car, your jobs and your budget.
You don't need to know shop talk. We explain terms like OBD2 port, live data and bidirectional test in plain words.
What we cover
Our guides cover handheld code readers, phone and Bluetooth adapters, and pro-level scan tools from brands like Autel, Topdon, Innova, Foxwell, BlueDriver and OBDLink. We also answer common questions about codes and the check engine light.
We compare models side by side, so you can see the trade-offs before you buy.
What we do
We read the product details, specs and maker information for every tool we cover. We also look at what buyers often say after using one.
Then we turn it into plain guides, comparisons and clear picks. You can read more on our How we research page.
What we don't do
We don't make, sell or ship any tools, and no brand pays us to rank its products.
Cars Diagnostic Tool is not affiliated with Autel, Topdon, Innova, Foxwell, BlueDriver, OBDLink or any other maker.
We don't claim to have tested every tool ourselves. When we pick one, we tell you why, based on its specs, its features and buyer feedback.
How we earn money
Some links on this site go to stores like Amazon. If you buy through them, we may earn a small commission at no extra cost to you.
That never changes which products we pick. Our affiliate disclosure has the details.
Get in touch
Spotted a mistake or have a question about a guide? Let us know on our contact page.