Quick question to the folks here. I have been experiencing intermittent engine vibration/idling on my 2008 Altis whenever I do a full stop. This happens particularly on heavy traffic whevever I am on a stop and go situation. This does not happen often but I am concerned that this might lead to something more serious. I have actually asked assistance from the casa but the technicians were not able to catch the vibrating during the road test. Please provide your ideas on the issue.