MAHLE BMW Ignition Coil MINI N20 N26 N55 S55 Faulty ignition coils will lead to misfire codes and therefore reduce your engine performance as your vehicle requires the spark to make power. Replace your faulty coils today and restore those lost power on your BMW/Mini N13, N14, N16, N18, N20, N26, N45, N46, N51, N52, N55, N62, N73, N74, M54 and S55 engines!