There are 1 owner-reported engine complaints for the 2015 BMW M3in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
CRANK HUB SPUN TIMING SPROCKET CAUSING VALVES TO IMPACT PISTON AND CATASTROPHIC ENGINE FAILURE. QUOTED MORE THAN $10K OUT OF POCKET TO REPAIR. THIS IS CAUSED DUE TO POOR CRANK HUB DESIGN. CAR COMPANIES HAVE BEEN USING KEYED CRANKHUBS FOR GENERATIONS BUT BMW DECIDED TO NOT USED A KEYED HUB.. THIS IS VERY NEGLIGENT CONSIDERING HOW MANY OF THESE VEHICLES HAVE ENGINE FAILURE DUE TO THIS.
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