IsItAGoodCar
Reliability Guide

Common Problems with the
2013 BMW i3 (I01)

The i3 launched in the UK in 2013 as a carbon-fibre-bodied electric hatchback, offered as a 60Ah pure EV or with a 647cc range-extender petrol engine.

What changed for 2013

  • •60Ah/22kWh battery with an official range of about 80-100 miles.
  • •Optional REx range extender using a 647cc two-cylinder petrol engine.
  • •Rear-wheel drive, single-speed transmission and a carbon-fibre reinforced plastic passenger cell.

Common MOT watch-outs

  • !Corroded rear brake discs and poor brake efficiency from light regenerative use.
  • !Worn front top mounts and suspension bushes on early cars.
  • !Tyre damage and uneven wear on the narrow 155/175-section Bridgestone Ecopia tyres.
4
Known Issues
2
Serious
1
Moderate
1
Minor

All Known Issues

Motor Mount & Bolt Failure

SeriousEngine

Early models had plastic motor mounts or weak mounting bolts that could snap under the high torque of the electric motor, potentially damaging the drivetrain.

Est. Repair Cost: £1,000–£2,000
Warning Signs:

Loud "thump" or bang under hard acceleration or regenerative braking, Vibration through the cabin

What to Inspect:
  • Check if the upgraded aluminium mounts or stronger bolts have been fitted
  • Inspect the motor area for any signs of movement or loose hardware
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KLE (Onboard Charger) Failure

SeriousElectrics & Electronics

The Convenience Charging Electronics (KLE) module can fail, leading to reduced AC charging speeds or a total inability to charge from a wallbox.

Est. Repair Cost: £1,000–£2,500
Warning Signs:

AC charging restricted to 3.7kW (half speed), Car refusing to start an AC charge, Fault message on iDrive

What to Inspect:
  • Test the car on a 7kW or 11kW AC charger and check the draw
  • Check if the updated KLE unit was fitted under warranty
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REx Engine Corrosion & Misfires

ModerateEngine

The 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.

Est. Repair Cost: £500–£1,500
Warning Signs:

REx engine refusing to start, Rough running or "Drivetrain" error when the REx is active, Strong smell of petrol or oil

What to Inspect:
  • Request a manual start of the REx (Maintenance Mode) during the test drive
  • Check the oil and spark plug service history
  • Look for fuel pressure sensor recall completion
Verified by IsItAGoodCar Research Team

12V Auxiliary Battery Failure

MinorElectrics & Electronics

The small 12v battery powers the car's computers. When it fails, the car throws dozens of unrelated error codes and may refuse to engage the high-voltage system.

Est. Repair Cost: £150–£250
Warning Signs:

Random "High Voltage System" errors, Car won't "Ready" or unlock, Screen glitches

What to Inspect:
  • Check the date code on the 12v battery (should be replaced every 4-5 years)
  • If original, budget for immediate replacement
Verified by IsItAGoodCar Research Team

Buying Tips for 2013 BMW i3 (I01)

  • Check the 12V battery date code; a failing one causes a cascade of false errors.
  • Test AC charging on a 7kW charger and confirm the car accepts the full rate.
  • On REx cars, force the engine to run and check for smoke, misfire and stale fuel.
2014–2016
Check a 2013 BMW i3 (I01) by Registration