I too have had similar engine problems as stated above...engine idle, VSC light, Check Engine Light coming on...my car is only 2 years old (2008 model)and has 33,000 miles on it...way too sudden to have these type of problems. It started about 2 months ago-I brought it in, they made me pay $200 or so for a fuel induction cleaning and told me to start using 'better quality gas'-not Tom Thumb gasoline -even though I only put in 93 Octane or Premium gasoline. A month later it happened again, this time they told me there were mis-fire codes and they did some top engine cleaning....so far it has been fine, but I still feel that 'idle' in my engine occasionally. Not as bad as it was before but still....luxury car engines shouldn't have these type of problems.