Can you use a 2007 Mercedes coil on my 2012 Veloster?

Hello,

Those coils are not interchangeable.

Please let me know of any questions.
Thank you.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

I have added the picture of the coil for both of the 2012 Veloster (first picture), and a 2007 C230 (second picture).
As you can see that they are physically different. Also, the Veloster uses a 2-wire connector and the C230 uses four wire connector.

Also, they have different internal specification, like spark output, resistance.

This is why they are not interchangeable.

Hope this helps.

Please do let me know if you have any questions.
Thank you.