2018 BMW 330I engine problems
12 owner complaints filed with NHTSA name the engine on the 2018 BMW 330I — 38% of all complaints for this model year.
What owners report
“The engine overheated and suddenly lost power/ acceleration while driving in rush hour traffic at highway speed. I had to move across 3 lanes of traffic to get on to shoulder of highway safely while car and engine sputtered and slowed to a stop with no power or acceleration. After having vehicle…”
filed Mar 31, 2026
“The coolant system and oil housing filters. The entire coolant system components fails in this vehicle after 60,000 mile due to the parts not being all aluminum. This fix alone is about 8k from the BMW Dealership. This isn’t fair to the customer! This needs to be a recall! The parts needs to be…”
filed Feb 5, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Crankshaft sensor may be equipped with incorrect firmware, preventing the sensor from…Campaign 18V465000 · Jul 11, 2018
Related service bulletins
The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.
B010224 · Warranty Program/Extension · issued Jun 26, 2026The EVAP systems purge (vent) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in-service date.
B010224 · Warranty Program/Extension · issued May 5, 2026Diesel fuel injectors: ltd wty extension to 10 years/120,000 miles
B010919 · Service Bulletin/Repair Instructions · issued Nov 16, 2023Pressure control valve (pcv) extended ltd wty 15 years/150,000 miles
B011423 · Service Bulletin/Repair Instructions · issued Nov 13, 2023Check Control message (CCM) indicates: (ID 213): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 - Starter alternator / belt for 48V system…
B120721 · Service Bulletin/Repair Instructions · issued Nov 9, 2023
Engine problems in other 330I years
| Year | Reports | Share |
|---|---|---|
| 2021 330I | 8 | 28% |
| 2020 330I | 18 | 35% |
| 2019 330I | 8 | 20% |
| 2017 330I | 20 | 49% |
| 2006 330I | 16 | 7% |
| 2005 330I | 1 | 4% |
| 2002 330I | 1 | 2% |
| 2001 330I | 2 | 2% |
Other reported problem areas on the 2018 BMW 330I
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.