One problem related to ignition coils failure has been reported for the 2008 Volkswagen Jetta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Volkswagen Jetta based on all problems reported for the 2008 Jetta.
December 13, 2010. The check engine light came on. Metro vw service diagnosed an ignition miss. They replaced (1) ignition coil on cylinder #2 with a different type of ignition coil than the original. The "new version" ignition coil has insulation where the original coil did not. February 8, 2011, approximately, two months later, the check engine light came on again. At least one of the three original ignition coils is failing, causing an ignition miss, and needs to be replaced. The original ignition coils are not performing as originally designed. The original ignition coils should be recalled and replaced with the new versoin ignition coils at the manufacture's expense.