There are 3 stored owner reports matching the engine leading-label group for the 2018 BMW 7 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 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)Oil pressure pump failure. MANY MODELS AFFECTED. MAINLY B58 ENGINES
The contact owns a 2018 BMW 750I. The contact stated that while driving at various speeds, the engine overheated with the temperature gauge indicating that the engine was hot(H) with the check engine warning light illuminated. The vehicle was taken to an independent mechanic where the contact was informed that thermostat, thermostat sensor, and the water pump needed to be replaced. The contact stated that the vehicle was repaired; however, the failure worsened, and additional repairs were performed but the failure persisted. The contact was then informed by a mechanic that the engine oil cooler line was defective which had caused oil to leak into the engine coolant. The mechanic linked the failure to NHTSA Campaign Number: 17V377000 (Engine and Engine Cooling); however, the VIN was not included. The manufacturer was notified of the failure and informed the contact that the vehicle was not under recall. The manufacturer then referred the contact to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 87,000.
Apparently BMW models like mine have been having the coolant expansion tanks leaking between 60 and 70 thousand miles. This causes the coolant levels to drop and causes engine failures.
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.