Diagnose your own car!
Check your car's main systems for known and hidden errors, clear fault codes, and more with our car diagnostic tool.
Plans and Prices
Feature Finder
Find out what Carly can offer for your car
Prevention saves money
Carly users save up to $2,000 a year using our car diagnostic tool!

Prevention saves money
Carly users save up to $2,000 a year using our car diagnostic tool!
Car maintenance can cost you dearly, including avoidable mechanic fees.
“The Carly diagnostic app for cars helped me understand what was wrong and eventually saved me thousands.“
Andres, BMW F10
Car diagnostics on the go
Perform a health check quickly via your smartphone with our diagnostic app.
Carly can diagnose your car and much more — find out what could be possible for your car.
How it works
Understand car diagnostics
Diagnostic fault codes (DTCs, also called trouble or error codes) identify a particular problem area outside the normal range and show where a fault might be occurring (i.e. fuel mixture too rich) even if the warning light is not showing it.
The modern vehicle contains data from up to 80 complex electronic control units. Carly reads out, interprets, and visualizes that data for you in an easy and understandable way.

Other Carly features
Learn what else there is
Most Common Questions
Why should I make regular diagnostics?

The faults can appear even before the engine or other warning lights turn on. These minor issues can turn into bigger problems in the course of days or weeks, and when the warning light is on, it can already be too late or very costly.
Which electronic control units does the Health feature cover?

This depends on your car brand. Brands such as BMW, Mini, Audi, Skoda, Volkswagen, Seat, Toyota, Lexus, Mercedes, Renault, and Porsche have been in development for a long time and have more functions available. This includes manufacturer-level diagnosis on systems such as, engine, transmission, emissions, ABS, airbag, multimedia, and more. Other brands were implemented more recently and so we currently offer the OBD functions (OBD health or diagnosis, OBD parameters and Emissions check) for the time being, which covers the most critical systems.
How do I know which features will work for my car?

You can check the available Carly features for your car brand (and model)
here
. To see which functions are supported by your individual car, you will need to connect the adapter and the free Carly lite app. We offer you a 14-day money-back guarantee for the Carly adapter so you can test it together with the free lite version of the app. If it is not as expected, you can send the adapter back to us within the given period.
What do I need to do to get started?

You just need the Carly Universal Adapter and a mobile phone to download our Carly app. It runs both in Android and iOS and works for almost all car brands in the world. Plug the adapter in the OBD-port, connect to the app, and start with your first diagnosis.
Get your set here.