The standard is OBD II (On board Diagnostics), which you find in most cars since 1996.
I have a Skoda Fabia 2006, and I use a bluetooth module (this one, but which ever will do)that I then connect to an app in my android phone to read/clear error codes, and monitor different sensor readings.
Here is a list of Bluetooth adapters
You find the OBD connector right in front of your left knee, there is a little drawer, open it then continue pushing it down in the same direction, which will sound like braking it but it is normal, until you see a connector that looks like an old SCART tv. that is your OBD.