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
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!
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.“
Car diagnostics on the go
Perform a health check quickly via your smartphone with our diagnostic app.
Understand the warning lights and severity of the problems with our car diagnostic tool
Don’t worry about your car breaking down on a road trip. Use the Carly diagnostic app to get insights into your car's health before it catches you by surprise.
Prevent costly damages
Detect hidden problems early using a car diagnostic tool
No one likes unexpected repair bills, especially when you are out of warranty. Take the opportunity to prevent some of these unwanted expenses by checking your car regularly with our car diagnostic app to keep your maintenance costs low.
Avoid mechanic visits
Read and clear fault codes using a diagnostic app on your car
Finally you can do it all through your smartphone with a simple tap.
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.
Carly Success Stories
"I have become the car guru at the car shows for BMW owners. Saving hundreds to even thousands of dollars that may have been spent. Carly is basically plugged into my OBD all the time so that I can check out my E39’s health score or check real time parameters for different engine components", Nate, BMW E39 (525) 2003