I have the exact issue, took the car in for 10,000km service and informed the dealer, they were unable to reproduce it, however I can, so i'm taking the tech for a drive in the next couple days... Do you know what caused the problem in your case? I have the Rav4 09 CV 4cyl, have tried a couple different fuels and get the same result. Really frustrating when you are on the open roads and overtake Ant.