Has anyone discussed root cause of the failures with the service people or is there anything preventative that can be done?
By the way here is an interesting article about direct injection engine "things to watch out for". It suggests ethanol outside of the acceptable range (10% for our cars?) could cause injector failure and there is a potential issue with intake valve carbon build up (not sure if this contributes to injector failure, but it can be prevented by driving the car really hard to burn off the carbon deposits
)
http://www.thetruthaboutcars.com/201...in-a-nutshell/