BMW i3 (I01)
The i3 was a radical departure for BMW, featuring a carbon-fibre reinforced plastic (CFRP) cell and an aluminium chassis. In the UK, it has a dedicated following. Buyers should choose between the pure BEV or the REx (Range Extender) model, which adds a small petrol engine for peace of mind but also more maintenance requirements.
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Common Faults & Reliability
These are the most common documented problems for the BMW i3 (I01), sorted by their typical impact and frequency.
REx Engine Corrosion & Misfires
medium severityThe Range Extender (a 650cc scooter engine) can suffer from internal corrosion or stale fuel if not used regularly. It is sensitive to spark plug and oil condition.
Motor Mount & Bolt Failure
high severityEarly models had plastic motor mounts or weak mounting bolts that could snap under the high torque of the electric motor, potentially damaging the drivetrain.
KLE (Onboard Charger) Failure
high severityThe Convenience Charging Electronics (KLE) module can fail, leading to reduced AC charging speeds or a total inability to charge from a wallbox.
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Example BMW i3 (I01) Vehicles
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