A faulty coil pack will generally have symptoms similar to a faulty spark plug. Some of the most common tell tale signs that a coil may be defective include: A rough idle A noticeable lack of power A significant drop in RPMs while accelerating for no apparent reason Misfiring A blinking or intermittently activating check engine light Replace your failing or faulty items with these direct replacements. Part also fits* CLK 2004 – 2009 1.8, PETROL, C209/A209, 06/04-06/09 E CLASS 2004 – 2009 1.8, PETROL, W211, 10/04-08/09 C CLASS 2000 – 2007 PETROL, 4CYL, P/N A0001502980, W203/CL203/S203, C180K/C200K, 11/00-06/07 *This is a guide only. If you are unsure if this part is suitable for your vehicle, please contact us and we can confirm prior to your purchase.
