BMW 330e G20 Plug-In Hybrid HV Battery Warning
BMW
3 Series
2019
B46 2.0 PHEV
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟡 Monitor Closely
The 12kWh HV battery in 330e G20 can develop cell imbalance faults above 80,000 miles. EV range reduces and hybrid warning illuminates. Battery replacement costs £4,000-8,000.
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this BMW 3 Series 2019 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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