i have a cultus 2012 the problem is after a month or so it starts missing and after that it wont start . and then after 5 to 10 min everything is normal . behaves like this for a day or so and tada all problems are sudenly gone everything is normal . after that the whole cycle repeats . i have changed the battery the mechanic says there is no problem with the car .and when going on the hills the rpm suddenly drops to zero happened in muree....a number of times .