There are 1 stored owner reports matching the powertrain & transmission leading-label group for the 2006 BMW Z4 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)THIS REPORT CONCERNS A SAFETY ISSUE WITH A 2006 BMW Z4 WITH A 3.0 ENGINE AND AUTOMATIC TRANSMISSION. THE VEHICLE HAS AN INTERMITTENT PROBLEM THAT BEGAN EARLIER THIS YEAR. THE VEHICLE WILL BEGIN ACCELERATING WITHOUT DEPRESSING THE ACCELERATOR AND WILL SOMETIMES MAINTAIN A CONSTANT SPEED WHEN THE FOOT IS TAKEN OFF THE ACCELERATOR. IT WILL ACCELERATE WELL PAST 100MPH WITHOUT STOPPING. THE THREE WAYS THAT STOP THE SUDDEN ACCELERATION IS TO 1. APPLY THE BRAKES, 2. PUT THE GEAR SELECTOR INTO NEUTRAL, OR 3. TAP THE 'OFF' POSITION ON THE CRUISE CONTROL LEVER. CRUISE CONTROL HAS NEVER BEEN UTILIZED WHEN THE VEHICLE HAS EXPERIENCED THIS UNINTENDED ACCELERATION. THERE ARE NO FLOOR MATS IN THE VEHICLE THAT COULD IMPEDE THE FUNCTIONING OF THE ACCELERATOR. THIS VEHICLE HAS BEEN TAKEN TO THE DEALER FOR SERVICE ON MULTIPLE OCCASIONS. A TECH WORKING ON THE VEHICLE STATED THAT HE BELIEVED IT WAS A CRUISE CONTROL SENSOR, BUT THE SHOP FOREMAN DETERMINED THERE WAS NOTHING WRONG. BMW OF NORTH AMERICA INSPECTED THE CAR AND HAVE STATED THAT 'THEY WILL STAND BY THEIR PRODUCT AND THAT NO DEFECT EXISTS.' I HAVE PROVIDED VIDEO DOCUMENTATION OF THIS ISSUE TO BMW. *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.