One problem related to ignition module has been reported for the 2006 BMW 325. The most recently reported issues are listed below.
BMW 325i has an acceleration delay problem. When the driver demands a sudden increase in acceleration, the car hesitates anywhere from 1. 5 to 3 seconds. This is a dangerous condition when someone is making a left turn in traffic, or getting onto a highway, or passing on a 2 lane country road, etc. Other cars traveling at 60 mph are moving at 88 ft/sec. The amount of leeway this car needs is much too excessive. The car has been back to the dealer twice with the same diagnosis - "problem not verified". Friends who have driven my car think it is a dangerous condition. Bad acceleration is just as bad as poor braking.