There are 4 stored owner reports matching the powertrain & transmission leading-label group for the 2009 MINI Cooper 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 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)LIGHT IS COMING ON AND TRANSMISSION SHIFTS SMOOTHLY BUT WHEN YOU DECELERATE IT BUCKS DOWN. IT HAPPENS ANYWHERE ON THE ROADS WHEN DRIVING AND YOU DECELERATE. THE LIGHT THAT INDICATES ISSUE WITH TRANSMISSION, IN THE BOOK IT SAYS I WON'T BE ABLE TO SHIFT OUT OF PARK BUT THERE IS NO ISSUE SHIFTING OUT OF PARK, SO NOT SURE IF IT IS CONSIDERED ELECTRICAL OR IF IT IS POWERTRAIN
NOTICED DECREASED ACCELERATION PERFORMANCE AND VISIBLY NOTICED LEAKING OIL FROM THE TOP OF THE TURBO SYSTEM NEXT TO THE HEAT SHIELD AFTER RETURNING HOME AFTER A DRIVE ON THE FREEWAY. MINI DEALER IDENTIFIED THE PROBLEM AS A TURBO OIL FEED LINE LEAK. NOTICED ON NHTSA FORUMS THAT THIS IS A COMMON ISSUE WITH MINI OWNERS AND COULD BECOME A FIRE HAZARD UNDER THE HOOD IF NOT DETECTED AND QUICKLY REPAIRED. *TR
THE TIMING TENSIONER ON MY MINI COOPER S BACKED OUT, RESULTING IN A MASSIVE OIL LOSS WHILE AT HIGHWAY SPEEDS. THIS IS APPARENTLY A KNOWN ISSUE BY MINI, BUT NO KNOWN RECALL HAS BEEN ISSUED AT THIS POINT. *TR
A 2009 MINI COOPER CLUTCH WAS DEFECTIVE WAS REPLACED IN MAY OF 2010 AND IN AUGUST OF 2010 THE CLUTCH WENT AGAIN AND THIS TIME BURNT THE FLY WHEEL. THE CAR HAD TO BE TOWED SAFETY OF PASSENGER WAS COMPROMISED. *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.