There are 2 owner-reported body & structure complaints for the 2017 BMW 4 Seriesin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
CONVERTIBLE TOP LEAKS REAR PASSENGER SIDE AND DRIVER SIDE WHEN HEAVY RAIN AND WASHING MY VEHICLE WITH MY HOSE SPRAYER. HAVE REPORTED IT OVER AND OVER THEY'RE SAYING YOU CANNOT USE A HIGH-PRESSURE HOSE ON THE VEHICLE IT'S NOT HIGH PRESSURE. IT LEAKED WHEN TRAVELING DOWN THE HIGHWAY WHEN IT WAS RAINING AND SITTING STEEL IN MY DRIVEWAY AS I WASHED IT IT ALSO LEAKS AFTER THEY RECENTLY FIXED THE VEHICLE WHEN THEY WASHED IT AND THEY'RE SAYING OH WE USE THE HIGH PRESSURE HOSE AND THEY TOLD ME YOU'RE NOT SUPPOSED TO USE A HIGH-PRESSURE HOSE TO WASH THE CAR.THIS HAS OCCURRED OVER A PERIOD OF YEARS
MY WIFE WAS DRIVING OUR 2017 BMW 430I WITH OUR INFANT SON IN THE BACK SEAT. SHE TRAVELING APPROXIMATELY 70 MPH ON THE FREEWAY WHEN SHE HEARD AN EXPLOSIVE SOUND WHICH RESULTED IN THE GLASS SUNROOF TO SHATTER. THE SUNROOF WAS NOT OPEN, THE HEAT WAS NOT ON, AND THERE WERE NO VEHICLES IN FRONT/BEHIND, OR NEXT TO HER. NO VISIBLE EVIDENCE OF ANY ROAD DEBRIS. IT JUST EXPLODED OUTWARD, AND NO CLUE AS TO WHY.
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