IsItAGoodCar
Reliability Guide

Common Problems with the
2020 Renault Zoe

The comprehensive 2020 ZE50 update brought a 52kWh battery with up to 245 miles WLTP range, optional 50kW CCS DC rapid charging, a more powerful 135hp R135 motor, and a totally revamped premium dashboard.

What changed for 2020

  • •Fitment of 52kWh Z.E. 50 battery pack delivering up to 245 miles WLTP combined range
  • •Introduction of 50kW Combined Charging System (CCS) DC rapid charging socket option
  • •More powerful 134bhp (100kW) R135 electric motor offered alongside the standard R110 unit
  • •Completely overhauled interior with 10-inch digital instrument cluster and Easy Link portrait touchscreen
  • •Shift away from compulsory battery rental, with most UK private sales bought with owned 'i' batteries

Common MOT watch-outs

  • !Rear brake disc surface corrosion and caliper pin binding flagged during the roller brake test
  • !Excessive wear on front suspension lower ball joints and anti-roll bar links under heavy urban use
  • !Windscreen chips and cracks directly within the swept area of the advanced driver safety cameras
5
Known Issues
3
Serious
2
Moderate
0
Minor

All Known Issues

Battery Charger Box (BCB) Failure

SeriousElectrics & Electronics

The BCB is responsible for managing AC charging. It is a common failure point, often caused by internal component failure or moisture ingress. A failed BCB will prevent the car from charging on AC, though DC rapid charging (if fitted) may still work.

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

"Unable to charge" message, Car trips house circuit breaker when plugged in, Intermittent charging at 22kW/11kW

What to Inspect:
  • Test the car on both a home 7kW charger and a 22kW public post
  • Check for any "Check Electrical System" warnings
  • Verify charging begins immediately without errors
Verified by IsItAGoodCar Research Team

Power Electronic Box (PEB) Failure

SeriousEngine

The PEB (Inverter) converts DC from the battery to AC for the motor. Failure symptoms often start with intermittent power loss or unusual whining noises before total vehicle immobilisation.

Est. Repair Cost: £2,000–£4,000
Warning Signs:

"Electric Motor Failure" warning, Sudden loss of power while driving, High-pitched electrical whine, Car stuck in "P"

What to Inspect:
  • Listen for unusual electrical whining under heavy acceleration
  • Check service history for inverter/PEB cooling fluid changes (critical every 4 years)
  • Scan for DTCs related to isolation faults
Verified by IsItAGoodCar Research Team

12V battery electrical chaos

SeriousElectrics & Electronics

A weak 12V battery is the root of most Zoe "breakdowns". It can cause "Check Electrical System" messages, charging failures, and total vehicle immobilisation.

Est. Repair Cost: £100–£200
Warning Signs:

Car refuses to start or charge, Random dashboard warning lights, Keyless entry failure

What to Inspect:
  • Age of the 12V battery (sticker on battery)
  • Voltage using a multimeter if possible
  • Service history for battery replacement
Verified by IsItAGoodCar Research Team

Suspension (Drop links and ball joints) wear

ModerateSuspension & Chassis

Due to the heavy battery pack, the Zoe’s front suspension components, particularly drop links and ball joints, wear faster than on a standard Clio.

Est. Repair Cost: £120–£350
Warning Signs:

Knocking noise over bumps, Vague steering feel, Uneven front tyre wear

What to Inspect:
  • Listen for clunks on the test drive
  • Inspect front tyres for inner edge wear
  • Check MOT history for suspension advisories
Verified by IsItAGoodCar Research Team

Charging port and flap failure

ModerateElectrics & Electronics

The locking pin for the Type 2 cable can fail, or the flap motor can seize, preventing the car from charging or releasing the cable.

Est. Repair Cost: £150–£450
Warning Signs:

Charging cable won’t lock or unlock, Charging flap stuck shut, Intermittent "Check Charging" message

What to Inspect:
  • Test the charging flap operation multiple times
  • Check for loose or corroded pins in the charging socket
Verified by IsItAGoodCar Research Team

Buying Tips for 2020 Renault Zoe

  • Ensure the vehicle has the optional 50kW CCS DC charging port fitted if you intend to complete regular motorway journeys
  • Test the Easy Link touchscreen, digital dashboard displays, and electronic gear selector thoroughly
  • Check both charging cables (Type 2 Mennekes and three-pin 10A granny charger) are included and undamaged
2018–20192021
Check a 2020 Renault Zoe by Registration