At Sils Complete Auto Care Centre, we now perform a new service specifically meant for GDI vehicles. you can read in this article about the current issues being seen with this engineering design. http://www.autoserviceworld.com/clearing-the-carbon/
Sils Auto now performs a specific GDI service to help prevent this concern or service it before costly manualy tear down repairs need to be performed. See this video basically showing you what is performed.
Common GDI vehicles being seen.
Audi, Volkswagen, Hyundai, Kia, Lexus are some of the more common vehicles seen in the shop for carbon issues resulting in Check Engine Light issues for misfires and other problems.