There are 2 stored owner reports matching the powertrain & transmission leading-label group for the 2017 BMW 4 Series 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 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)I have a BMW 430i Gran Coupe, there was a system coolant leak and now they are saying the entire system needs to be replaced because the plastic cracked and eroded from wear and tear. I began checking and found that over 1 million BMW vehicles were recalled for coolant system problems. My car seems it wasn't covered under the recall. I found a service bulletin which stated that certain BMW repairs were necessary to replace coolant line. 2 Service Bulletins - SI B01 29 16 and SIB 17 01 21. I believe my car was covered under the recall that affected EGR module, the issue I am having now could also have been affected by this recall. I see many people online complaining of the coolant leak issue. I had to wait until I got paid to fix it. They are telling me it will cost about $5,000 to repair. Please help.
TL* THE CONTACT OWNS A 2017 BMW 430I. THE CONTACT STATED THAT WHILE DRIVING, THE CHECK ENGINE WARNING LIGHT REMAINED ILLUMINATED. THE CONTACT STATED THAT THE VEHICLE WOULD OVERHEAT. THE CONTACT ALSO STATED THAT THE TRANSMISSION SKIPPED GEARS WHILE DRIVING. THE VEHICLE WAS TAKEN TO HENDRICK BMW (6950 E INDEPENDENCE BLVD, CHARLOTTE, NC 28227) BUT WAS NOT YET DIAGNOSED NOR REPAIRED. THE CONTACT STATED THAT THE FAILURE STARTED ALMOST IMMEDIATELY AFTER THE VEHICLE WAS PURCHASED. THE VEHICLE WAS TAKEN BACK TO THE SAME DEALER WHERE THE AIR THERMOSTAT AND COOLANT PUMP WERE REPLACED HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE SAME DEALER A SECOND TIME BUT WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 80,000.
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: Aug 30, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.