There are 1 stored owner reports matching the brakes leading-label group for the 2008 BMW M3 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)IN A SITUATION WHERE THE CAR IS STOPPED AND LIGHT PRESSURE IS APPLIED TO THE BRAKE (HVAC IS OFF) THE IDLE OF THE CAR WILL FALL BELOW SPECIFICATION AND THE IDLE BECOMES ROUGH. EVEN A VERY SLIGHT DECREASE IN BRAKE PRESSURE WILL RETURN THE IDLE TO SPEC. THIS WOULD SEEM TO ME TO BE A PROBLEM WITH EITHER THE VACUUM BOOSTER OR THE MASTER CYLINDER. I HAVE NOTED MANY OTHERS WITH THE SAME SYMPTOMS IN ONLINE FORUMS. AT THE VERY LEAST IT IS AN EMISSIONS ISSUE AND AT WORST A SAFETY ISSUE. I AM PROMPTED TO LOG THIS COMPLAINT GIVEN TODAY'S NEWS OF 328I BRAKE INVESTIGATIONS. I HAVE CALLED BMWNA TO GET NO SATISFACTORY RESPONSE. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.