There are 2 owner-reported electrical system complaints for the 2008 BMW M5in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
ALL WIRES LEADING INTO THE HEADLIGHTS HAVE DETERIORATED AND ARE BARE. IT KEEPS SHORTING OUT THE LIGHTS AND SEEMS TO BE A MAJOR FIRE HAZARD. THIS IS A GARAGE KEPT CAR WITH 80K MILES. APPEARS MANY MANY OTHERS HAVE THE SAME PROBLEM. PLEASE HELP.
THE SUNROOF DRAINS OF MY VEHICLE OVERFILL OR CLOG CAUSING WATER TO LEAK IN THE TRUNK AND WHEEL WELL. THE CARS WHEEL WELL HOLDS THE CARS BATTERY, RDC, AND PDC MODULES. SURROUNDED BY FOAM WHEN WATER REACHES THE MODULES THEY ARC AND SPARK CAUSING THEM TO HEAT UP AND MELT. ALSO LOCATED IN THE TRUNK IS SEVERAL OTHER ELECTRICAL COMPONENTS XM RADIO AMP, ETC. IF NOT CAUGHT IN TIME COULD CAUSE FIRE AND MAYBE EVEN DEATH. YOU CAN'T TELL WHEN THEY ARE OVERFILLED/CLOGGED UNTIL IT'S TO LATE. I HAVE REPLACED THEM 2 TIMES BOTH TIMES ALMOST CAUSING FIRE TO THE CAR. HERE IS A LING SHOWING THAT BMW ACKNOWLEDGES THE ISSUE AND IS NOT FIXING IT. FROM SOMEONE ELSE TOO. HTTP://WWW.BIMMERFEST.COM/FORUMS/ATTACHMENT.PHP?ATTACHMENTID=265090&D=1296781065 HTTP://WWW.BIMMERFEST.COM/FORUMS/SHOWTHREAD.PHP?T=259095&PAGE=1
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.
Data synced from NHTSA on Apr 26, 2026